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Thông tư 11/2020/TT-BLĐTBXH danh mục nghề công việc nặng nhọc độc hại nguy hiểm

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THÔNG TƯ 11/2020/TT-BLĐTBXH DANH MỤC NGHỀ CÔNG VIỆC NẶNG NHỌC ĐỘC HẠI NGUY HIỂM

Số hiệu:	11/2020/TT-BLĐTBXH	Loại văn bản:	Thông tư
Nơi ban hành:	Bộ Lao động - Thương binh và Xã hội	Người ký:	Đào Ngọc Dung
Ngày ban hành:	12/11/2020	Ngày hiệu lực:	01/03/2021
Ngày công báo:	16/02/2021	Số công báo:	Từ số 301 đến số 302
Lĩnh vực:	Lao động - Tiền lương	Tình trạng:	Còn hiệu lực

TÓM TẮT VĂN BẢN

Danh mục nghề, công việc nặng nhọc, độc hại, nguy hiểm mới

Ngày 12/11/2020, Bộ LĐ-TB&XH ban hành Thông tư 11/2020/TT-BLĐTBXH về Danh mục nghề, công việc nặng nhọc, độc hại, nguy hiểm và nghề, công việc đặc biệt nặng nhọc, độc hại, nguy hiểm.

Theo đó, ban hành kèm theo Thông tư là Danh mục nghề, công việc nặng nhọc, độc hại, nguy hiểm và nghề, công việc đặc biệt nặng nhọc, độc hại, nguy hiểm.
Kể từ ngày Thông tư 11/2020/TT-BLĐTBXH có hiệu lực (từ ngày 01/3/2021), 08 Quyết định, Thông tư khác sẽ hết hiệu lực thi hành, đơn cử như:
- Quyết định 1453/LĐTBXH-QĐ năm 1995 về việc ban hành tạm thời danh mục nghề, công việc đặc biệt nặng nhọc, độc hại, nguy hiểm và nặng nhọc, độc hại, nguy hiểm;
- Quyết định 915/LĐTBXH-QĐ ngày 30/7/1996 ban hành tạm thời danh mục nghề, công việc đặc biệt nặng nhọc, độc hại, nguy hiểm và nặng nhọc, độc hại, nguy hiểm;
- Thông tư 36/2012/TT-BLĐTBXH ngày 28/12/2012 ban hành bổ sung danh mục nghề, công việc nặng nhọc độc hại, nguy hiểm và đặc biệt nặng nhọc, độc hại, nguy hiểm;
- Thông tư 15/2016/TT-BLĐTBXH ngày 28/6/2016 ban hành Danh mục nghề, công việc nặng nhọc, độc hại, nguy hiểm và đặc biệt nặng nhọc, độc hại, nguy hiểm….

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Thông tư 11/2020/TT-BLĐTBXH danh mục nghề công việc nặng nhọc độc hại nguy hiểm (Bản Word)

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Thông tư 11/2020/TT-BLĐTBXH danh mục nghề công việc nặng nhọc độc hại nguy hiểm (Bản Word)

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Tình trạng hiệu lực: Còn hiệu lực

MINISTRY OF LABOUR, WAR INVALIDS AND SOCIAL AFFAIRS ----------	SOCIALIST REPUBLIC OF VIETNAM Independence - Freedom - Happiness ---------------
No.: 11/2020/TT-BLDTBXH	*Hanoi, November 12, 2020*

CIRCULAR

PROMULGATING LIST OF ARDUOUS, HAZARDOUS AND DANGEROUS OCCUPATIONS AND WORKS, AND EXTREMELY ARDUOUS, HAZARDOUS AND DANGEROUS OCCUPATIONS AND WORKS

Pursuant to the Law on occupational safety and hygiene dated June 25, 2015;

Pursuant to the Government’s Decree No. 14/2017/ND-CP dated February 17, 2017 defining the Functions, Tasks, Powers and Organizational Structure of the Ministry of Labour, War Invalids and Social Affairs;

At the request of Director of the Department of Work Safety;

The Minister of Labour, War Invalids and Social Affairs promulgates a Circular promulgating the list of arduous, hazardous and dangerous occupations and works, and extremely arduous, hazardous and dangerous occupations and works.

Article 1. List of arduous, hazardous and dangerous occupations and works, and extremely arduous, hazardous and dangerous occupations and works

The list of arduous, hazardous and dangerous occupations and works, and extremely arduous, hazardous and dangerous occupations and works is enclosed with this Circular.

Article 2. Implementation

Supervisory ministries and employers shall annually review and assess the List of arduous, hazardous and dangerous occupations and works, and extremely arduous, hazardous and dangerous occupations and works, according to the methods announced by the Minister of Labor, War Invalids and Social Affairs, and propose necessary amendments thereof in conformity with social, economic, scientific and technological development, and management policies in each period.

Article 3. Effect

1. This Circular comes into force from March 01, 2021.

2. The following Decisions and Circulars will cease to have effect from the effective date of this Circular:

a) Decision No. 1453/LDTBXH-QD dated October 13, 1995 of the Minister of Labor, War Invalids and Social Affairs;

b) Decision No. 915/LDTBXH-QD dated July 30, 1996 of the Minister of Labor, War Invalids and Social Affairs;

c) Decision No. 1629/LDTBXH-QD dated December 26, 1996 of the Minister of Labor, War Invalids and Social Affairs;

d) Decision No. 190/1999/QD-BLDTBXH dated March 03, 1999 of the Minister of Labor, War Invalids and Social Affairs;

dd) Decision No. 1580/2000/QD-BLDTBXH dated December 26, 2000 of the Minister of Labor, War Invalids and Social Affairs;

e) Decision No. 1152/2003/QD-BLDTBXH dated September 18, 2003 of the Minister of Labor, War Invalids and Social Affairs;

g) Circular No. 36/2012/TT-BLDTBXH dated December 28, 2012 of the Minister of Labor, War Invalids and Social Affairs;

h) Circular No. 15/2016/TT-BLDTBXH dated June 28, 2016 of the Minister of Labor, War Invalids and Social Affairs.

3. The period during which an employee has performed the occupation or work on the lists enclosed with the abrogated decisions or circulars in Clause 2 of this Article shall be also considered as the period for performing arduous, hazardous and dangerous occupations or works or extremely arduous, hazardous and dangerous occupations or works by the effective date of this Circular.

4. Difficulties that arise during the implementation of this Circular should be reported to the Ministry of Labour, War Invalids and Social Affairs for consideration./.

MINISTER

Dao Ngoc Dung

LIST

OF ARDUOUS, HAZARDOUS AND DANGEROUS OCCUPATIONS AND WORKS, AND EXTREMELY ARDUOUS, HAZARDOUS AND DANGEROUS OCCUPATIONS AND WORKS
(Enclosed with the Circular No. 11/2020/TT-BLDTBXH dated November 12, 2020 of the Minister of Labor, War Invalids and Social Affairs)

I. MINING

No.	Occupation or work	Working conditions
Class-VI working conditions
1	Drilling rock with a hand-held machine hammer in the pit	Working in a confined space lacking light and oxygen; arduous and dangerous work; working under impact of dust, noise and tremor in excess of permissible limits
2	Pit mining	Working in confined space lacking oxygen; manual and extremely arduous and dangerous work; working under impact of dust, noise and CO^2.
3	Drying, grinding, mixing and packaging explosives	Hazardous and dangerous work; working in frequent contact with high temperature, noise, dust and toxic chemicals ^{(TNT, Cl2, Licacmon...).}
4	Operator of loader or excavator with bucket capacity of at least 8m³	Arduous work; static working posture; working under impact of dust, noise and tremor in excess of permissible limits.
5	Mine rescue team member	Extremely dangerous occupation
6	Extracting non-ferrous metal ores by underground mining method	Working in confined and wet space lacking oxygen; manual and extremely arduous and dangerous work; working under impact of dust, noise and CO₂
7	Operating hydrometallurgy and pyrometallurgy equipment (copper, zinc, tin, titanium, chrome, wolfram, etc.).	Working under impact of high temperature, dust, arsenic, noxious gases and chemicals.
Class-V working conditions
1	Drilling to extract rocks by hand-held machine hammer	Working on rocky mountain sides; arduous and dangerous work; working under impact of dust, noise and violent tremor
2	Operating rotary bit drilling rigs or pluggers	Working outdoor; dangerous work; working in frequent contact with noise and dust in excess of permissible limits
3	Electrical and mechanical repairer in the pit	Working in confined space; dangerous work; static working posture; working under impact of noise and coal dust
4	Operating pneumatic fan, electrical, diesel fuel, and battery charging stations in the pit	Working in confined space lacking oxygen; dangerous work; working under impact of dust, noise and heat.
5	Iron worker or drainage worker in the pit	Manual, arduous and dangerous work; working under impact of dust, noise and ^CO2.
6	Driver or driver’s assistant of coal-carrying train	Dangerous works; working under impact of noise, tremor and dust.
7	Transporting coal in the pit.	Manual, arduous and dangerous work; working under impact of noise, dust and heat.
8	Gas measurement, wind speed measurement, air-gate watch, land survey and quality control in the pit	Arduous and dangerous work; static working posture; working under impact of noise, heat and dust.
9	Directly providing technical guidance in the pit.	Solving multiple complex works; working at a heat, dust and dangerous workplace.
10	Keeper of blast warehouse in a pit	Hazardous and dangerous work; working under impact of noise, heat and dust
11	Sampling and performing chemical analysis of coal.	Working in frequent contact with heat, dust, CO and other toxic chemicals.
12	Building and repairing mine pathways	Manual and arduous work; working under impact of heat, dust and noise.
13	Operating super and church drilling machines at opencast mines	Arduous and dangerous work; working under impact of dust, noise and violent tremor.
14	Opencast blasting	^{Arduous and dangerous work; working under impact of dust, noise and NO2.}
15	Manual quarrying	Manual, arduous and dangerous work; working under impact of heat, dust and noise; workers are likely to suffer from occupational diseases.
16	Driver, driver’s assistant and escort of vehicles used for transporting explosives.	Arduous and dangerous work; working under impact of noise, tremor and dust.
17	Seafarer, technician, oiler of ships carrying explosives	Arduous and dangerous work; working under impact of wave, noise and tremor.
18	Maintaining, loading and unloading explosives	Manual, arduous and dangerous work; working under impact of dust and noxious gases
19	Explosive testing	^{Working outdoor; dangerous work; working under impact of noise, dust and NO}2^.
20	Blasting for extracting kaolin	Working outdoor; arduous and dangerous work; working under impact of noise and soil and rock dust with high content of ^SiO2
21	Forging machine hammer of at least 1 ton.	Working under impact of high temperature, tremor and noise in excess of permissible limits
22	Giving production guidance in the pit (foreman, vice foreman, pit captain, pit manager).	Solving multiple complex works; working in confined space lacking oxygen; working under impact of dust, noise and CO₂
23	Extracting non-ferrous metal ores by opencast or semi-opencast mining.	Manual work; working in a hot space lacking oxygen and in frequent contact with toxic dust.
24	Operating equipment for dressing of non-ferrous metal ores by flotation, gravity concentration, magnetic separation (separating, leaching, etc.)	Working under impact of noise, dust, toxic chemicals, arsenic, metal oxides, etc.
25	Operating ancillary equipment in hydrometallurgy and pyrometallurgy (copper, zinc, tin, titanium, chrome, wolfram, etc.).	Working in frequent contact with high temperature, arsenic, noxious gases and chemicals
26	Supervising safety in the pit; operating and repairing equipment in the pit; operating and assisting operator of electric and battery-powered locomotives in the pit; operating, repairing and charging batteries in the pit; performing acceptance testing of products in the pit; warehouse keeper in the pit; protecting warehouses in the pit; cleaning, dredging pit sediments; transporting materials in the pit; watching signals in the pit; service staff in the pit; installing and repairing communication systems in the pit; operating network station in the pit; guarding wind gate in the pit; measuring gas and wind speed in the pit.	Working in confined space; dangerous work; static working posture; working under impact of noise, coal dust and CO₂
27	Electrolysis workers (caring, moving anodes and cathodes, sediments, etc.), producing copper ingots	Working under impact of high temperature, dust, noxious gases; facing high risks of acid burns
28	Processing electrolytic sediments, obtaining precious metal in production of non-ferrous metals	Working in frequent contact with high temperature, arsenic, noxious gases and metal oxides, etc.
29	Repairing non-ferrous metal melting and smelting furnaces	Working in frequent contact with high temperature, arsenic, noxious gases and metal oxides, etc.
30	Keeping industrial hygiene in production of non-ferrous metals	Manual work; working in frequent contact with heat, toxic dusts, noxious gases and other solvents
31	Workers in charge of mixing and pouring concrete inside the pits.	Working in confined space lacking oxygen; static working posture; working under impact of noise, heat and dust.
32	Performing mine gas monitoring in the pit.	Frequently working in the pit, in confined and dangerous space lacking oxygen; static working posture; working under impact of noise, heat and dust.
33	Driving graders and bulldozers of a capacity of at least 180 CV	Static working posture; working under impact of dust, noise and tremor.
34	Operating shell and tube heat exchangers in silicon pretreatment, alkali tanks, silicon treatment for alumina plants	Working under impact of high temperature, alkali vapor and radioactive substances, and noise in excess of permissible limits
35	Operating shell and tube heat exchangers in separation areas; vapor separation at alumina plants	Working under impact of high temperature, alkali vapor and radioactive substances, and noise in excess of permissible limits
36	Operating the hydrate filtration and alumina melting chamber	Arduous and hazardous work; working under impact of heat radiation, CO, noise and tremor in excess of permissible limits
37	Operating coal gasification furnace	^{Working under impact of heat, noise, tremor, dust with high content of H2; CO; CO2}
Class-IV working conditions
1	Operating iron-ore dressing slurry pump in the pit		Working in deep pit, muddy and confined space lacking light, and under impact of noise.
2	Operating rotary shifters in iron ore dressing.		Working on the shifter, under impact of noise
3	Operating coarse crusher in iron ore dressing.		Working in deep pit, muddy and confined space lacking light, and under impact of noise.
4	Operating conveyor belt in dressing of underground iron ore mine		Arduous work with noise
5	Operating vibrating shifter in iron ore dressing.		Working under impact of noise and vibration
6	Operating ball mill crusher in ore dressing.		Muddy and wet working conditions; working under impact of noise
7	Operating medium-size crusher in ore dressing.		Working in frequent contact with noise Working on the floor, constantly moving
8	Operating water gun used in ore dressing		Arduous work; working in confined and wet space with noise
9	Electrical and mechanical repairing at opencast mines		Static working posture; working under impact of noise, lubricants and dust
10	Operating dewatering pump under the pit		Working under impact of noise, vibration and heat
11	Manually washing and screening, manually extracting coal at opencast mines		Arduous work; working outdoor and under impact of noise and dust
12	Operating conveyor belt, crusher, coal/rock sieve; operating coal chutes.		Arduous work; working under impact of noise, tremor and dust in excess of permissible limits.
13	Guarding, delivering, warehouse keeper/ assistant at explosives manufacturing facility		Working at dangerous and poorly ventilated space, and under impact of toxic gases and dust
14	Testing on explosives		Working in frequent contact with chemicals and toxic dust
15	Driving explosives lifting machine		Working under impact of toxic chemicals and dust
16	Electrical and mechanical repairing of explosives manufacturing equipment		Static working posture; working under impact of petro, oil, toxic dust and chemicals
17	Industrial cleaning of explosives manufacturing facility		Manual and arduous work; working under impact of toxic dust and chemicals
18	Directly providing production guidance and inspecting quality of explosives.		Working in frequent contact with chemicals and toxic dust
19	Driving graders and bulldozers of a capacity of less than 180 CV		Working under impact of heat, noise, dust and vibration
20	Operating loader or excavator with bucket capacity of less than 4 m³.		Working under impact of heat, noise, dust and vibration
21	Operating stone crushing and screening machine		Working outdoor and under impact of noise, tremor and dust of very high content.
22	Driving coal/stone-carrying vehicle in a mining area		Arduous and dangerous work; working under impact of noise, tremor and dust in excess of permissible limits.
23	Making paper tubes for explosive packaging		Working under impact of heat and toxic chemicals during the shift
24	Manually extracting kaolin at opencast mines		Working outdoor; manual and arduous work; working under impact of hot, cold, wind at deep pit, and stone dust with high content of ^SiO2
25	Manually processing kaolin		Working outdoor; arduous, manual and monotonous work; working under impact of soil and rock dust with high content of SiO₂
26	Operating grue portique/gantry crane, coal loading/unloading machines at coal washing and screening plant.		Working at height and under impact of sunlight, heat and dust; stressful work.
27	Operating dump car at coal washing and screening plant		Working outdoor and under impact of sunlight, heat and coal dust in excess of permissible limits.
28	Electrical and mechanical repairing at coal washing and screening plant		Arduous work; static working posture; working in frequent contact with lubricants, coal dust, high temperature, tremor and noise in excess of permissible limits
29	Charging grease and pumping oil for pillow blocks of equipment at coal washing and screening plant		Arduous work; working in contact with lubricants, heat, noise, tremor and coal dust in excess of permissible limits
30	Putting vehicle lifts and stoppers at coal washing and screening plant		Arduous and dangerous work; working under impact of heat, noise, tremor and coal dust in excess of permissible limits.
31	Manually moving coal and impurities on trains, barges, conveyor belts and at coal washing and screening plant		Arduous work; working under impact of heat, noise, tremor and coal dust in excess of permissible limits.
32	Picking up coal and impurities on conveyor belts at coal washing and screening plant.		Monotonous work; working under impact of heat, noise, tremor and coal dust in excess of permissible limits.
33	Unloading coal (taking coal, pouring coal, opening coal chutes, etc.) at coal washing and screening plant		Working under impact of heat, noise, tremor and coal dust in excess of permissible limits; work with dangerous factors
34	Hooking (hooking cables and chains) at coal washing and screening plant		Arduous and monotonous work; working outdoor and under impact of environmental factors (hot, cold, wind, etc.), and coal dust in excess of permissible limits.
35	Repairing and maintaining coal mining equipment (drills, excavators, graders, bulldozers, etc.)		Arduous work; static working posture; working in contact with dust and lubricants
36	Directly providing production guidance in opencast coal mining and at coal washing and screening plant (foreman, vice foreman, team leader)		Working under impact of heat, noise, and tremor and coal dust in excess of permissible limits.
37	Operating coal washing and screening equipment by adopting flotation or magnetic separation at coal washing and screening plant		Working in frequent contact with noise, dust and chemical hazards.
38	Doing industrial cleaning job at mining equipment and vehicle repairing plants		Manual work; working under impact of noise, lubricants and industrial waste.
39	Protecting resources and boundaries of coal mines.		Working outdoor; constantly moving; dangerous work.
40	Workers in charge of charging batteries and repairing mining lamps; repairing and distributing batteries and mining lamps.		Manual work; working in frequent contact with lead and acids.
41	Workers in charge of repairing coal loading/unloading machines in coal washing and screening plant		Working at height; dangerous work; static working posture.
42	Keeping industrial explosive warehouses.		Working outside the pit; arduous and dangerous work; working in contact with toxic chemicals.
43	Directly providing production guidance in opencast bauxite mining and bauxite ore dressing (foreman, vice foreman, team leader)		Working under impact of heat, noise, tremor and dust in excess of permissible limits.
44	Operating conveyor belts carrying bauxite ores in alumina production.		Arduous work; working under impact of noise, tremor and dust in excess of permissible limits; working in confined space
45	Operating sludge pumping system in bauxite ore dressing		Arduous work; muddy and wet workplace; working under impact of noise and tremor. Working in direct contact with acids, alkali, soda, etc.
46	Directly providing production guidance in coal gasification and alumina production plants (foreman, vice foreman, team leader)		Working under impact of alkali vapor, noise, tremor and dust in excess of permissible limits
47	Operating the centralized control system for alumina production plant and its plants		Stressful work; working under impact of noise and tremor.
48	Operating bauxite materials unloading/tripper equipment		Constantly moving; working in confined space and under impact of noise, dust and tremor in excess of permissible limits
49	Operating equipment in red mud accumulation and washing area		Working under impact of heat, height, high temperature, alkali vapor and radioactive substances, and noise in excess of permissible limits
50	Operating equipment in hydrate crystallization area		Working under impact of high temperature, alkali vapor and radioactive substances, and noise in excess of permissible limits
51	Operating bauxite ore crusher		Arduous work; muddy and wet workplace; working under impact of noise and tremor.
52	Operating lime unloading, milk and slaking machine in alumina plant		Arduous work; working in confined space and under impact of noise, tremor and dust in excess of permissible limits, and in frequent contact with lime milk
53	Operating lifting equipment in alumina plant		Arduous and hazardous work; working under impact of noise and trust in excess of permissible limits
54	Repairing electrical equipment, C&I engineering in the ore dressing and alumina production line		Static working posture; working under impact of noise, tremor and dust; working at height
55	Repairing and maintaining electromechanic equipment, mechanical equipment, motor equipment used in bauxite mining and dressing, and alumina production.		Arduous work; static working posture; working in contact with heat, dust and noise in excess of permissible limits, and lubricants
56	Operating the conveyor belt supplying coal to coal gasification plant		Working underground and under impact of heat, noise, tremor and coal dust in excess of permissible limits; work with dangerous factors
57	Operating soda/acid dilution and condensation equipment in solution calibration		Working under impact of high temperature, alkali vapor and radioactive substances, and noise in excess of permissible limits
58	Operating and installing pipelines of red mud disposal lake		Arduous work; working outdoor and under impact of alkali vapor and red mud
59	Operating hydrate and alumina product packaging system		Arduous and hazardous work; working under impact of noise and trust in excess of permissible limits
60	Operating heavy-duty fans in coal gasification		^{Working under impact of heat, noise, tremor, dust, H2; CO; CO2 with high content}
61	Environmental monitoring at alumina plant		Arduous and hazardous work; working in direct contact with chemicals, noise and dust in excess of permissible limits; sampling at confined locations, pits, sewage sewers.
62	Doing industrial cleaning job at alumina plant		Arduous work; muddy and wet workplace; working under impact of noise, tremor and dust in excess of permissible limits
63	Healthcare in pits		Working in confined space lacking oxygen; dangerous work; working under impact of dust, noise and heat.
64	Operating washing and screening equipment; peat rotary drum drying system.		Working in frequent contact with heat, dust, CO and other toxic chemicals.

II. MECHANICAL ENGINEERING AND METALLURGY

No.	Occupation or work	Working conditions
Class-VI working conditions
1	Working on the top of the coke oven	Working on the top of the oven with very high temperature; arduous and dangerous work
Class-V working conditions
1	Driving hot coke stopping cars	^{Working at height under the impact of very high temperature, CO}2^{, CO and dust; dangerous work}
2	Hot repair of coke ovens	Manual, arduous and dangerous work; working under impact of very high temperature and in direct contact with CO and dust
3	Monitoring coke oven temperature	Working near the coke oven; very hot; dangerous; working under impact of CO and dust
4	Driving coke pushing and quenching cars	^{Working in frequent contact with high temperature and under impact of CO, CO}2
5	Driving coal loading cars on the coke oven top	^{Working on the top of the coke oven with very high temperature; dangerous work; under impact of CO}2 ^{and CO, and dust with very high content.}
6	Ferrous metallurgy	^{Arduous work; working under impact of very high temperature, noise, CO, CO}2 ^{and dust with very high content}
7	Steel ingot casting	Dangerous work with high risk of fire and burn injuries; working under impact of heat, noise, CO and ^CO2
8	Wall working, building steel furnaces	Arduous work; working in confined space and under impact of dust, noise and tremor
9	Producing electric arcs;	Working in frequent contact with heat, noise, dust with high content and toxic chemicals, ^{CO, CO}2^{, Brai in excess of permissible limits}
10	Hot rolling of steel	Arduous work; working under impact of high-level heat, dust and noise
11	Steelmaking by electric arc furnaces, open-hearth furnaces (above 1 ton)	^{Arduous work; working under impact of very high temperature, dust, noise, CO and CO2}
12	Aluminum casting, hot rolling of aluminum	Arduous work; working under impact of heat and noise in excess of permissible limits
13	Arc welding in holds of ships and barges	Working in confined, wet and dirty space lacking oxygen; static working posture; working under impact of ^{CO, CO}2^{, MnO}2 ^{and noise}
14	Welding in steam boiler trucks	Working in confined space lacking light and oxygen; static working posture; working under impact of welding gas, electric arc flash, ^{CO, CO}2
15	Removing rust in holds of ships and barges	Working in confined, wet and dirty space lacking light and oxygen; static working posture; working under impact of high-content dust and violent tremor
16	Sandblasting for removing rust from ship hulls	Arduous work; working outdoor and under impact of noise, tremor and dust of very high content.
17	Removing burrs by compressed air	Arduous work; working under continuous impact of dust, noise and tremor in excess of permissible limits.
18	Smelting lead alloys, tin for casting axle box brass, and railway locomotive parts	Arduous work; working under impact of thermal radiation and lead vapor in excess of permissible limits
19	Corrosion-resistant coating in holds of ships and barges	Working in confined space lacking light and oxygen; static working posture; working under impact of ^CO2^{, toluene and other chemicals contained in paint}
20	Burning grinding stones	^{Manual and arduous work; working under impact of heat, CO, CO}2
21	Refining corundum for production of grinding stones	Arduous work; working under impact of high temperature, dust, noise and CO
22	Smelting lead alloys, tin for casting railroad car parts.	Arduous work; working under impact of thermal radiation and lead vapor in excess of permissible limits
23	Smelting and casting aluminum and copper for rolling electrical wire	Arduous work; static working posture; working under impact of heat and toxic gases or vapors
24	Smelting antimony by reverberatory furnace	^{Working under impact of high temperature, and in contact with As, CO, SiO}2^{, Sb.}
25	Smelting or refining tin containing arsenic by reverberatory furnace	^{Working in frequent contact with high temperature, As, CO, SiO2, Sb.}
26	Removing arsenic and sulfur from tin and antimony ores	^{Working in frequent contact with high temperature, As, CO, SiO2, lead and Sb.}
27	Lead ore refining	^{Working under impact of high temperature, and in contact with As, CO, SiO2, lead and Sb.}
28	Flotation of non-ferrous metal ores, hydrometallurgy (separating, leaching, etc.)	^{Working in frequent contact with toxic chemicals, including H}2^SO4^{, CuSO}4^{, ZnSO}4^{, Clo and}Sb.
29	Smelting and refining ZnO into powder by reverberatory furnace or rotary furnace	Working in frequent contact with high temperature, Pb, CO and ZnO.
30	Operating and repairing non-ferrous metal dust collectors in ZnO electrostatic precipitator.	Working in frequent contact with high temperature and lead vapor
31	Melting and pouring metal.	Arduous and dangerous work; working under impact of heat and toxic gases or vapors
32	Continuous burning and casting of steel billets or slabs	Arduous work; working under impact of heat, noise and dust
33	Opencast mining of non-ferrous metal and chromium ores	Manual and extremely arduous work; static working posture; lacking oxygen; working in frequent contact with toxic dust
34	Operating non-ferrous metal grinder and mixer	eWorking under impact of noise and toxic dust in excess of permissible limits.
35	Gravity concentration of non-ferrous metal and chromium ores	Manual work; working under impact of arsenic and metal oxides
36	Operating bridge cranes in non-ferrous metal and ore dressing and refining plants	Working under impact of high temperature, dust, toxic gases and vapors.
37	Packaging and handling ores and non-ferrous metal products	Manual and extremely arduous work; muddy workplace; working under impact of toxic substances
38	Manual processing of non-ferrous metal ores	Manual and arduous work; working in frequent contact with toxic substances such as arsenic, lead, etc.
39	Working on cast iron/steel foundry floors	Arduous and dangerous work; working under impact of high temperature and dust
40	Working in front of cast iron, steel or coke furnaces	Arduous and extremely dangerous work; working under impact of heat, dust and toxic gases and vapors
41	Operating air collection system of coking plant	Working under impact of high temperature, toxic gases and vapors, and dust in excess of permissible limits.
42	Distilling coke oil and products obtained from coking process	Working in frequent contact with heat and chemicals posing risks of occupational skin diseases.
43	Treating blast-furnace slag	Arduous and dangerous work; working under impact of heat and dust in excess of permissible limits
44	Operating and repairing cast iron melting furnaces	^{Extremely arduous work; working under impact of high temperature, dust, CO and CO}2^.
45	Drying moulds	Extremely arduous work; working under impact of high temperature, toxic gases and vapors
Class-IV working conditions
1	Driving charging cranes in steelmaking	Working at height and under impact of heat, noise, dust mixture, manganese dust and CO
2	Grinding, sieving and mixing wall materials for steel furnace	Arduous work; working in frequent contact with noise and dust with high content.
3	Building table moulds for casting steel	Working under impact of heat, noise and very high-content dust; manual and arduous work
4	Driving steel roll forming machine	^{Working in frequent contact with heat, noise, CO and CO}2
5	Operating ore crushing and screening machine	^{Arduous work; working under impact of loud noise and MnO}2
6	Driving cranes in steel roll forming chamber	Working under impact of heat, noise and tremor
7	Driving cranes in processing of materials used in ferrous metallurgy	Working in frequent contact with dust, tremor and loud noise
8	Degating when pouring molten steel into molds	Working in confined space and under impact of heat, dust and loud noise
9	Removing hot slag from steel furnace	^{Very dusty and hot workplace; working under the impact of noise, CO and CO}2
10	Technological testing of rolled steel	^{Working in frequent contact with noise, heat, CO and CO}2
11	Classifying steel scraps used as charge materials in steelmaking	Working in confined and dirty space, and under impact of noise and very high-content dust
12	Operating electrical systems of furnaces for steelmaking and ferrous metallurgy	^{Working under impact of heat, dust, noise, CO and CO2}
13	Drying steel pouring ladles	^{Manual and arduous work; working under impact of heat, noise, CO and CO2}
14	Operating coke oven gas blowers	Working in frequent contact with heat, dust, CO and loud noise
15	Feeding coking coal to conveyor belt	Arduous work; working under impact of noise and high-content dust
16	Operating coking coal conveyor belt of coke oven	Constantly moving; working in frequent contact with noise and high-content dust
17	Operating coking coal crushers and mixers	Manual and arduous work; working under impact of noise and high-content dust
18	Operating coke conveyor belt	^{Working in frequent contact with high temperature, dust, CO and CO2}
19	Annealing metal with use of chemicals	^{Arduous work; working under impact of very high temperature, thermal radiation, CO, CO2, SO2 and loud noise}
20	Arc welding in long barrels	^{Arduous work; working under impact of CO}2^{, Mn, welding gases and arc flash}
21	Welding ship hulls	^{Working outdoor; static working posture; working under impact of CO}2^{, welding gases and arc flash}
22	Manual welding for railroad car wheel rims	Working under impact of welding gases, arc flash and lead vapor
23	Manually removing rust from boilers, locomotives and railroad cars	Static working posture; working under impact of high-content dust and noise in excess of permissible limits.
24	Removing rust from ships	Working outdoor; static working posture; working under impact of loud noise and dust in excess of permissible limits.
25	Removing rust by hand-held machine	Working under impact of loud noise, tremor and high-content dust
26	Fitting train wheel tires	Working with magnetic fields; arduous and hazardous work; under impact of noise
27	Painting ship hulls	Working outdoor; static working posture; working under impact of toxic substances included in paint and toluene
28	Painting railroad cars	Working in frequent contact with toxic substances
29	Bending hot corrugated iron of a thickness of 4mm or more	^{Arduous work; working under impact of heat, thermal radiation, CO2, and loud noise}
30	Cold repair of locomotives and railroad cars	Arduous work; static working posture; working in contact with, loud noise, dust and lubricants
31	Galvanizing	^{Working under impact of toxic gases such as HCl, NH}3^{, NH}4^{OH, NH}4^Cl,ZnO and lead
32	Examining and repairing railroad cars	Working outdoor; arduous work; static working posture; dirty workplace with dust and noise
33	Lathing railroad car wheel rims	Arduous work; static working posture; working under impact of loud noise
34	Manufacturing and assembling mechanical grates	Manual and arduous work; working under impact of thermal radiation, and loud noise.
35	Hot piercing and forging	Arduous work; working under impact of thermal radiation, and loud noise.
36	Forging machine hammers of 350 kg or more	Arduous work; working under heat and loud noise
37	Repairing river-going ship engines (in docks)	Arduous work; hot and wet workplace; working in frequent contact with lubricants
38	Operating electrical system of corundum furnace in production of grinding wheels	Working under heat, dust and noise
39	Crushing and sieving corundum used in production of grinding wheels	Arduous and hazardous work; working under impact of loud noise, and dust in excess of permissible limits.
40	Mixing materials for pressing grinding wheels and shims	Arduous work; working under impact of loud noise and dust in excess of permissible limits
41	Lathing grinding wheels	Arduous work; static working posture; working under impact of loud noise and high-content dust
42	Washing and drying grinding grains	Manual, arduous work; wet workplace; working under impact of dust, noise and SO3.
43	Separating iron, sieving and classifying grinding wheels	Working in frequent contact with loud noise and dust in excess of permissible limits
44	Breaking up blocks of corundum, preparing corundum furnace	Manual and arduous work; working under impact of noise and very high-content dust
45	Producing grinding wheel adhesive	Manual and arduous work; working under impact of noise and very high-content dust
46	Honing grinding wheels by machine, by hand	Arduous work; working under impact of dust, noise and tremor in excess of permissible limits.
47	Testing grinding wheel speed	Manual and arduous work; working under impact of dust and noise.
48	Manual forging	Manual and arduous work; working under impact of heat, dust and CO.
49	Manual painting	Static working posture; working in frequent contact with toxic substances in paint
50	Metal and cyanide plating	Arduous work; working in contact with lead vapor
51	Painting and drying silicon steel core	Working in contact with heat and paint thinners
52	Arc welding, gas welding	Working in contact with heat and toxic gases and vapors
53	Dry grinding of metals	Working in contact with rock dust, metal dust, tremor and noise
54	Applying mastic and spray-painting engine blocks	Arduous work; working under impact of dust, paint thinners and petrol vapor
55	Hammer cast iron by hand	Arduous work; working in direct contact with cast iron dust
56	Mixing sand and clay for making moulds	Arduous work; working in direct contact with heat and dust
57	Breaking moulds	Arduous work; working under impact of heat, dust and tremor
58	Sieving sand used for making moulds by machine	Arduous work; working under impact of dust and noise; static working posture
59	Bakelite injection molding	Working in contact with heat, dust, toxic gases and vapors
60	Drying mould and cores by coal stoves	Arduous work; working in direct contact with heat, dust, toxic gases and vapors
61	Operating metal punching machines.	Working under impact of heat, noise and tremor; optical strain.
62	Operating cranes in mechanical casting workshops	Working under impact of heat and dust; stressful work
63	Lathing cast iron and rubber rollers of rice huskers	Arduous work; working under impact of cast iron dust and rubber dust
64	Drawing copper and aluminum wires	Arduous work; working in contact with loud noise
65	Heating, pressing and shaping copper and aluminum	Arduous work; working under impact of noise and toxic gases or vapors
66	Applying insulation coating and paint to electric wires	Arduous work; working under impact of noise and toxic gases or vapors
67	Granulating PVC, PP, PE.	Arduous work; working in contact with noise, dust, toxic gases and vapors
68	Covering electric wires with PVC, PP, PE.	Working under frequent impact of heat, toxic gases and vapors.
69	Smelting and casting cast iron in mechanical workshops	Arduous and dangerous work; working under impact of heat and dust
70	Cleaning casting objects	Arduous work; working under impact of heat, dust and noise
71	Die casting of metals (aluminum, copper)	Arduous work; working under impact of heat and dust
72	Soldering pesticide tanks	working under impact of heat and pesticides; static working posture
73	Drawing and rolling steel wires	Arduous work; working under impact of heat, dust and noise
74	Sampling, assaying and analysis of metal ores and products	Working in frequent contact with heat, dust, As, CO, Mg.
75	Preserving, loading/unloading and packing non-ferrous metal ores and products	Arduous work; working in contact with As, Pb, SiO₂, ZnO, Mg and Sb.
76	Mechanical and electrical repairs of tin, ZnO and Sb processing lines; magnetic separation, flotation	Working in frequent contact with heat, dust and toxic substances; static working posture
77	Drying and bagging chromium ore	^{Arduous work; working in contact with heat, chromium and SiO}2^.
78	Manual extraction of non-ferrous metal ores	Working outdoor; manual and arduous work; working in contact with heat and dust
79	Dipping lineman’s pliers into xylene	Working in contact with heat, xylene, crude oil and petrol
80	Pressing lineman’s pliers	Working in contact with heat and toxic gases and vapors
81	Keeping, delivering and receiving non-ferrous metal ores and products	Arduous work; working under impact of toxic dust
82	Protecting ore and chromium mining sites	Constantly moving; working under impact of noise and dust
83	Directly providing production guidance in extraction, dressing and refining of non-ferrous metals and chromium ores	Working under frequent impact of noise, dust, toxic gases and vapors.
84	Repairing and maintaining equipment used in extraction, dressing and refining of non-ferrous metals	Arduous work; static working posture; working under impact of noise and dust factors
85	Doing industrial cleaning job in non-ferrous metal ore dressing and refining workshops/plants	Manual and arduous work; working under impact of dust, noise, toxic gases and vapors
86	Operating heavy-duty fans/blowers of blast furnaces and coke ovens	Working under impact of high temperature, dust and toxic gases
87	Operating cast iron material handling cars	Working under frequent impact of dust, toxic gases.
88	Burning hot-blast furnaces	Arduous work; working under impact of high temperature and dust
89	Producing slag wool and slag granules	Arduous work; working under impact of heat and very high-content dust
90	Keeping coke oil warehouse	Working under impact of heat, toxic gases and vapors.
91	Feeding blast furnaces	^{Arduous and dangerous work; working under impact of dust, CO and CO2.}
92	Monitoring water of blast furnaces	^{Constantly moving; working under impact of high temperature, CO and CO}2
93	Operating conveyor belts to feed coke and sintering	Constantly moving; working in confined space and under impact of high-content dust
94	Monitoring coke annealing system (commutation)	Working under impact of high temperature, dust
95	Operating and repairing flow meters	Working in contact with high temperature, dust and mercury
96	Sintering frits	Working under impact of heat and high-content dust
97	Repairing, lubricating and maintaining metallurgical equipment	Arduous work; static working posture; working in contact with heat and dust
98	Operating sintering machines and valves	^{Extremely arduous work; working in contact with high temperature, CO, CO}2^.
99	Pumping water for quenching of coke	Arduous work; working in contact with heat and very high-content dust
100	Drying and classifying ores	Arduous work; working in contact with heat and dust
101	Operating mud crushers for refining and casting cast iron and steel	Arduous work; muddy and wet workplace; working under impact of noise and tremor.
102	Operating funnels of sintered products	Working under impact of heat and high-content dust
103	Operating sintered ore dust filtering machine	Working under impact of heat and very high-content dust
104	Directly providing technical guidance in cast iron and steel refining, and steel rolling	^{Working in frequent contact with high temperature, dust, CO and CO2}
105	Working on cold roll floor, cutting and binding rolled steel	Arduous work; working under impact of heat and dust
106	Producing and repairing steel wire drawing die	Arduous work; static working posture; working in frequent contact with heat and dust
107	Repairing pipelines for coal gas, compressed air, and water pipelines of metallurgical plants	Arduous and dangerous work; static working posture; working under impact of dust and heat
108	Doing industrial cleaning job at metallurgical plants	Manual and arduous work; working under impact of heat, dust.
109	Crushing and sieving dolomite and lime	Working under impact of tremor, noise, dust
110	Discharging and collecting coal	Manual and arduous work; working under impact of very high-content dust
111	Keeping coke oil warehouse	Arduous work; working in frequent contact with hot and toxic coke oil vapors
112	Maintain metal wares	Manual and arduous work; working in frequent contact with lubricants
113	Operating building powder crushing and sieving machines	Working under impact of noise, tremor and very high-content dust
114	Operating grinding and filing machines	Static working posture; working under impact of noise, and dust
115	Annealing metal by high-frequency induction furnace	Arduous work; working under impact of heat and dust
116	Operating machines to cut workpieces and shape tips and handles of metal files	Arduous works; working under impact of noise and tremor
117	Heating metals by mid- frequency induction furnace	Arduous work; working under frequent impact of high temperature
118	Firing and operating metal annealing furnaces	Arduous work; working under frequent impact of high temperature CO ^{and CO}2^.
119	Washing and using chemicals to blacken metals and metal products	Working in frequent contact with acids, soda, etc.
120	Nickel and chrome plating	Working in frequent contact with toxic chemicals
121	Rubbing, removing rust and polishing metals	Static working posture; working in frequent impact of noise and high-content dust.
122	Operating metal forming, filing and ball-grinding machines	Working in frequent contact with tremor, noise and toxic chemicals
123	Operating metal turning machine and ball-polishing machine	Arduous work; working in frequent contact with noise and dust
124	Grinding ball grinding wheels	Arduous work; working under impact of dust and noise
125	Lead casting for assembling ball grinding wheels	Working in frequent contact with heat, and lead vapor
126	Selecting metal balls (of less than 1 cm in diameter) visually	Arduous and monotonous work; optical strain; static working posture
127	Fusion welding	Arduous work; static working posture; working under impact of heat and dust
128	High-pressure welding	Static working posture; working under impact of heat, and toxic gases
129	Cold repair of motor vehicles of at least 10 tonnes and tracked vehicles	Arduous work; static working posture; working in frequent contact with lubricants
130	Doing industrial cleaning job at mechanical plants	Manual and arduous work; working in frequent contact with dust and chemicals
131	Drilling, planning and lathing cast iron	Dust; optical strain; paying high attention
132	Lathing, milling, planning, and sawing fiber and Bakelite sheets	Working under impact of fiber and Bakelite dust, high-concentration phenol vapor
133	Electrostatic painting.	Working in frequent contact with toxic chemicals; hot workplace lacking oxygen.
134	Operating machine hammers.	Working under impact of high temperature, tremor and noise in excess of permissible limits

III. CHEMICALS

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Making superphosphate	Working on high floor and in contact with toxic chemicals (HF, SO₃) of high concentration posing chemical poisoning risk; dangerous work.
2	Soldering in close boxes or towers	Working in confined space; static working posture; working under impact of heat and lead vapor of very high concentration
3	Producing pesticide active ingredients and pesticides of various types	Arduous work; working in contact with highly toxic chemicals
4	Producing and packing yellow phosphorus (P₄).	Working at height, adjacent to hot kilns, in direct contact with dust (of quartzite, apatite, coke), toxic gases (CO, P₂O₅, PH₃, HF, P₄...), noise; facing high risk of poisoning and explosion.
	Class-V working conditions
1	Producing and packing Na₂SiFe	Arduous works; working in frequent contact with toxic gas (HF), noise, and high-concentration dust.
2	Crushing apatite ore, pyrite ore; packing apatite powder	Working in frequent contact with dust and noise in excess of permissible limits
3	Operating and pyrite ore to fluidized-bed furnace for producing H₂SO₄.	Working on a high floor adjacent to the furnace, and in direct contact with dust, noise and SO₂ of high concentration
4	Operating H₂SO₄filling and sealing machine	Working in frequent contact with toxic chemicals and noise
5	^{Filtering electric dust in production of H}2^SO4	Working in frequent contact with dust, toxic chemicals and loud noise
6	Producing batteries: regenerating lead; grinding and casting lead; mixing and coating lead; cutting, grinding and drying lead plates; welding extreme beams; making lead plates; assembling batteries.	Working in direct contact with noise, heat and lead dust of very high concentration
7	Grinding pozzolan powder	Arduous work; working under impact of loud noise and dust in excess of permissible limits.
8	Making calcium carbide	^{Manual and arduous work; working under impact of heat, noise, CO2, CO and very high-concentration dust}
9	Refining rubber	^{Arduous and hazardous work; working in contact with high temperature, dust, SO}2^{, H}2^S
10	Operating coal gasification furnace in nitrogenous fertilizer production	Working on a high floor; arduous ^{and hazardous work; working in contact with CO in excess of permissible limits}
11	Repairing coal gasification furnace in nitrogenous fertilizer production	Arduous and dangerous work; static working posture; working in contact with CO
12	Synthesizing ammonia (NH3) in nitrogenous fertilizer production	^{Hazardous and dangerous work; working in frequent contact with NH}3^{of high concentration}
13	Operating high-pressure compressor in nitrogenous fertilizer production	^{Arduous work; working in contact with noise and NH}3^{of high concentration}
14	Operating mid-pressure and high-pressure ammonia pumps and decomposing urea	^{Dangerous and stressful work; working in contact with NH}3
15	Condensing, granulating and concentrating urea	^{Working in contact with toxic chemicals}
16	^{Producing salicylic acid, HNO}3^{, H}3^PO4^.	Working in frequent contact with various types of toxic chemicals.
17	Neutralizing superphosphate	Working in frequent contact with dust and highly toxic chemicals
18	Operating wet scrubber	^{Hazardous work; working in frequent contact with SO}2^{, SO}3 ^{and H}2^SO4^.
19	^{Drying absorption of SO}2 ^{and SO}3 in production of sulfur dioxide (^SO2)^.	^{Working in frequent contact with H}2^SO4^{, SO}3^.
20	^{Operating contact equipment in production of H}2^SO4^.	^{Working in contact with SO}2^{, SO}3^.
21	Making iron oxides in superphosphate production area	^{Working in contact with heat, dust, Fe}2^SO3 ^{and toxic chemicals}
22	^{Extracting H}3^PO4^{from superphosphate}	Working in contact with dust and fluorine compounds
23	Operating winches for feeding raw materials to the blast furnace in production of calcium magnesium phosphate fertilizer	^{Hazardous work; working in contact with CO, CO}2^{, H}2^S.
24	Discharging raw materials from the blast furnace in production of calcium magnesium phosphate fertilizer	Working in contact with CO, fluoride and high temperature
25	Operating the tower system for collection of waste gases from the blast furnace in production of calcium magnesium phosphate fertilizer	Working in contact with toxic gases ^{HF, SiF}4^{, lime, blast furnace slag}
26	Operating hot-blast stove in production of calcium magnesium phosphate fertilizer	Arduous work; working in contact with toxic gases and high temperature
27	Producing pesticide additives	^{Working under impact of toxic dust, SiO}2^{and metal oxides}
28	Liquefying and bottling chlorine; producing pure HCl.	Working in contact with highly toxic HCl and chlorine
29	Handling excessive chlorine	Hazardous work; working in contact with highly toxic chlorine
30	Grinding, sieving, drying and processing electrode coating flux materials	^{Arduous work; working in contact with heat, SiO}2 ^{dust, silicon and highly toxic substance Na}2^SiF6^…
31	Weighing raw mixtures; dry mixing of electrode coating flux.	Working in contact with toxic chemicals
32	Drying, grinding and bagging manganese ores	Working in contact with heat, noise and high-concentration manganese dust
33	Operating chain conveyors and rubber conveyor belts in the basement of the apatite processing plant.	Working underground in a wet place lacking light and oxygen, and under impact of noise and high-concentration dust
34	Operating GHIT sieving machine in the apatite processing plant.	Working underground in a wet place, and under impact of noise and dust.
35	Operating jaw crusher, hammer crusher in the basement of the apatite processing plant	Working underground in a wet place, and under impact of loud noise and dust.
36	Operating mud pumps underground	Working underground in a muddy and wet space lacking light; extremely arduous work; static working posture.
37	Soldering in chemical production	Working in contact with high-concentration lead vapor
38	Repairing furnaces and towers in chemical production	Working in confined space; arduous work; static working posture; working under impact of high temperature and strong chemicals
39	Manually loading and transporting black coal	Manual and arduous work; working in contact with coal dust (respirable dusts) of very high concentration
40	Repairing and dredging underground sewers in chemical plants	Manual and extremely arduous work; static working posture; working in frequent contact with waste and toxic chemicals
41	Producing chromium compounds	Working in frequent contact with highly toxic chemicals
42	Operating sewage pumping stations (oil-contaminated waste, contaminated waste); circulating water pump and wastewater treatment station	Frequently working at a depth of -10 m to -20 m, and in contact with noise, toxic waste, disease-causing microorganisms, and water treatment chemicals.
43	Repairing and operating equipment (water treatment, desalination, operation team leader)	Working in frequent contact with dust, toxic chemicals and noise
44	^{Producing liquid and solid CO2.}	^{Working in frequent contact with noise and chemicals (liquid and solid CO2 of high concentrations; potassium; H2S) and high-pressure CO2 compressor.}
45	Recovering, filtering and regenerating lubricating oil	Manual work; working in contact with toxic chemicals and loud noise, and under direct impact of hot oil vapor and steam
46	Removing hot slag from heat boiler	Manual and arduous work; working in frequent contact with great heat, coal ash dust and toxic gases and vapors
47	^{Keeping warehouses of pressure vessels (cylinders) (containing O}2^{, N}2^{, liquid CO}2^{, liquid NH}3^).	Working in frequent contact with cylinders containing high-pressure, flammable, explosive and dangerous gas, and under impact of toxic chemical vapors
48	Manually collecting coal in slag dump of coal gasification furnace	Working outdoor; manual and arduous work; working under impact of heat, coal ash dust and mixtures of steam, CO, H2S.
49	Extraction and transporting peat.	Working outdoor on peat sedimentation basins; manual and arduous work; working under direct impact of temperature, moisture, coal ash dust and mixtures of steam, ^{CO, CO}2^{, NH}3^{, H}2^S.
50	Operating the system for capturing heat from coal gasification process	Frequently working in the environment of high temperature, loud noise; and in contact with high-pressure equipment that generates toxic gases and vapors, including ^{CO, CO}2^{, NH}3^{, H}2^S.
51	^{Producing and bagging Al(OH)}3^.	Working in frequent contact with toxic chemical NaOH, moisture and dust at high temperature
52	Operating conveyor belts to supply sulfur; operating sulfur burners to produce H₂SO₄.	^{Working in frequent contact with heat, noise and high-concentration SO}2^{, H}2^S.
53	Operating cranes to mix superphosphate	^{Working in frequent contact with dust, noise and very high-concentration fluorine and H2S.}
54	^{Producing ZnCl}2^.	^{Working in frequent contact with}high temperatures, CO, HCl, H2S
55	^{Producing and bagging Na}2^SiF6^.	Arduous works; working in frequent contact with toxic gas (HF), noise, and high-concentration dust.
	Class-IV working conditions
1	Crushing lime and coal to make calcium carbide; packaging calcium carbide	Manual and arduous work; working in frequent contact with noise and dust in excess of permissible limits
2	Operating boilers	Arduous work; working in contact with dust, noise and heat
3	Operating drying ovens of apatite and pyrite ores.	Arduous work; working in contact with dust, noise and heat
4	Operating conveyor belts of pyrite, apatite, sulfur and coal ores, and acid products	Working in frequent contact with noise and high-concentration ore dust
5	Driving cranes to move apatite and pyrite ores	Working under impact of noise and high-concentration of ore dust
6	Grinding additives used in NPK fertilizer production	Arduous work; working under impact of noise and dust in excess of permissible limits
7	Drying, granulating/pelletizing and bagging NPK fertilizer	^{Working in frequent contact with heat, dust and NH}3
8	Bagging, bag sealing and loading superphosphate	^{Manual and arduous work; working under impact of dust, SO3, HF}
9	Rolling PVC, PP, PE thin films	Working in contact with gasoline vapor, heat and toxic plastic substances
10	Pressure pressing and forming rubber products	Arduous work; working in contact with heat, dust, noise and gasoline vapors
11	Calendaring and embossing rubber cloth	^{Working under impact of noise, gasoline and SO}2
12	Handling tire-hoop in production of tires of various types	Working in frequent contact with dust, gasoline and highly toxic substances such as xylene
13	Operating electrical system of calcium carbide furnace	Working in frequent contact with noise and high-concentration dust
14	Classifying lead plates used in battery production	Manual work; working under impact of noise and lead dust
15	Sieving and drying chemicals and rubber blends	Working in contact with high temperature, dust and toxic chemicals
16	Recycling reclaimed rubber	Arduous work; working in contact with coal dust and toxic chemicals
17	Vulcanizing rubber products	Arduous work; working in contact with toxic chemicals
18	Making industrial conveyor belts	Arduous work; working in contact with organic solvents (benzene) and toxic chemicals
19	Pressure pressing and forming tires and inner tubes of cars, airplanes and tractors	Arduous work; working in contact with high temperature, chemicals and organic solvents
20	Synthesizing alkyds used in paints	Working in contact with phenol, benzene, and xylene
21	Smelting and rolling zinc in battery production.	Working in contact with high temperature and zinc dust
22	Operating carbon rod furnaces in battery production.	Working in contact with high temperature, organic solvents and dust
23	Mixing anode powder in battery production.	Working in contact with electrolytes and dust
24	Mixing powder to press carbon rods in battery production.	Working in contact with high temperature and coal dust
25	Producing C2H2 and acetylene soot	Hazardous work; working in contact with toxic gases and coal dust
26	Operating condensate pumps in apatite processing.	Working in a wet space and in contact with acids and acid salts.
27	Operating pumps to supply acids and contact drums in apatite processing.	Working in contact with strong and very high-concentration acids
28	Regenerating solutions of copper.	Working in contact with strong inorganic acids
29	Producing ammonium carbonate.	Working in contact with strong acid (HCl) and ^Cl2^.
30	Operating wet scrubbers with solutions of copper, alkali in nitrogenous fertilizer production	Working in contact with soda and corrosive solutions of organic salts
31	Bottling materials, gaseous and liquid products in chemical industry	^{Working with toxic chemicals: C}2^H2^{, NH}3^{, CO}2^.
32	Bagging and loading urea.	^{Arduous work; working in contact with dust and NH}3^.
33	Producing activated carbon.	^{Working in frequent contact with NH}3^.
34	Producing barium carbonate ^(BaCO3^).	^{Arduous work; working in contact with dust and H}2^SO4^.
35	Producing sulfide salts.	^{Working in contact with concentrated H}2^SO4.
36	Producing tripoly.	^{Working in contact with dust and H}3^PO4^.
37	Producing purified water for use in chemical production	Working at a wet place and in contact with chlorine and bleach.
38	Operating cranes or machines to collect semi-finished products of calcium magnesium phosphate fertilizer.	Working at a wet place and in contact with dust and highly toxic chemicals (HF)
39	Feeding blast furnaces in production of calcium magnesium phosphate fertilizer	^{Working in contact with fossil coal dust, CO, H}2^{S, CO}2 at high temperature.
40	Operating conveyor belts that carrying semi-finished products of calcium magnesium phosphate fertilizer	Constantly moving; working in contact with noise and very high-concentration dust
41	Operating high-pressure fans and blast furnaces in production of calcium magnesium phosphate fertilizer	Working under impact of tremor, noise, dust
42	Checking blast furnaces in production of calcium magnesium phosphate fertilizer	Working under impact of high temperature, and in contact with CO, chlorine, HF.
43	Operating cranes to feed dryers	Working in contact with high temperature and dust
44	Operating rotary dryers in production of phosphate fertilizer	Working in contact with high temperature and dust.
45	Operating finished phosphate fertilizer crushers	Working in contact with dust and noise
46	Operating furnaces to provide heat for dryers.	Working in contact with heat, dust, and CO.
47	Operating conveyor belts that carrying finished phosphate fertilizer products.	Working in contact with dust and noise
48	Operating phosphate fertilizer bagging machines	Arduous work; working under impact of very high-concentration dust and noise
49	Loading and transporting phosphate fertilizer bags.	Manual and extremely arduous work; working under impact of dust
50	Operating ore material crushers for producing phosphate fertilizer.	Arduous work; working under impact of dust and noise
51	Operating conveyor belts in phosphate fertilizer production line.	Working in frequent contact with dust and noise
52	Operating equipment to sieve and filter dry or wet materials in chemical production	Working at a wet place and in contact with dust and noise
53	Washing, screening and transporting coal used in production of chemical fertilizer production	Arduous work; working under impact of dust
54	Transporting blast furnace dust in the production of calcium magnesium phosphate fertilizer	Arduous work; working in contact with dust, toxic gases from blast furnace smoke
55	Pressing fine apatite ore and coal dust used in phosphate fertilizer production	Working outdoor; arduous work; working in contact with dust
56	Electrolyzing NaCl solution to produce NaOH	Working with chlorine and saturated solutions
57	Condensing NaOH.	Working in contact with caustic soda.
58	Repairing electrolytic tanks in NaOH production.	Working in contact with NaOH and acids
59	Producing alum.	^{Working in contact with dust, H}2^SO4^{, SO}2 and ^SO3^.
60	Wet mixing and pressing electrode coating flux.	^{Working in contact with fine MnO2 and SiO2 particles.}
61	Drying welding electrodes in electric ovens	Working in contact with high temperature and fri dust.
62	Processing and cleaning surfaces of welding electrode cores.	Working in frequent contact with iron dust and acids
63	Crushing, rolling, stirring, mixing and canning paint.	Working in contact with phenol, xylene, benzene, chrome oxide, iron, and zinc
64	Melting waxes in battery production.	Working in hot, flammable and hazardous environment.
65	Washing and screening manganese by gravity method in battery production.	Arduous work; working in direct contact with manganese dust.
66	Operating manganese ore crushing and screening machines	Arduous work; working in contact with dust and noise.
67	Cutting cloth, gluing pipes, tires of airplanes, tractors, motorbikes, and cars.	Working in contact with gasoline and organic solvents
68	Producing high-pressure rubber pipes	Arduous work; working in contact with catalysts and sulfur
69	Engraving type moulds	Working under impact of metal dust and noise
70	^{Producing CaCO}3 powder	^{Working in contact with SiO}2^{dust and lime.}
71	Operating chain conveyors and rubber conveyor belts in apatite ore processing.	Working under impact of tremor, noise, dust
72	Operating wet-sieve shaker in apatite ore processing.	Working in a wet place and under impact of tremor and noise
73	Operating crushers in apatite ore sorting.	Working in a wet place and under impact of tremor, dust and noise
74	Operating machines for supplying reagents for apatite ore processing.	Working in frequent contact with toxic chemicals
75	Preparing reagents for flotation of apatite ore.	Working in frequent contact with toxic chemicals
76	Operating apatite ore filtration system.	Working in contact with organic solvents and acids.
77	Operating apatite ore drying system.	Working under impact of high temperature, dust and noise
78	Producing PVC pipes	Working in contact with heat, dust, toxic gases and vapors
79	Operating PP and PE bag weaving machines	Standing throughout the shift; working under impact of noise, tremor and dust
80	Operating boilers in chemical production	Working in contact with dust and fumes from materials, oil, grease and high temperature
81	Operating air compressors in chemical production	Working under impact of noise, tremor and chemicals
82	Mechanical and electrical repairs in chemical production line.	Working with toxic chemicals; static working posture.
83	Anti-corrosion coating in chemical production line.	Static working posture; working in frequent contact with toxic chemicals
84	Repairing measuring devices in chemical production.	Working with toxic chemicals; static working posture.
85	Operating acid and base pumps in chemical production.	Working in contact with toxic acid and bases
86	Doing industrial cleaning job at chemical plants	Working with toxic chemicals; manual and arduous work.
87	Directly providing technical guidance in chemical production line.	Processing complicated works; working under impact of noise, dust and toxic chemicals.
88	Producing pure chemicals	Manual and arduous work; working with toxic chemicals.
89	Operating machines for ore flotation	Working under impact of noise and tremor
90	Operating ore flotation reagent feeding machine.	Working in contact with organic solvents and acids.
91	Producing soap cream and soap powder.	Working in frequent contact with chemicals and toxic dust.
92	Sampling, analyzing the quality of ingredients, semi-finished products, and finished products in production lines of chemicals and chemical products, etc.	Working in frequent contact with toxic chemicals, noise and dust.
93	Operating, repairing pressure gauges in chemical production line.	Constantly moving; static working posture; working under impact of dust and toxic chemicals
94	Repairing batteries	Manual work; working in frequent contact with lead and acids.
95	Testing and checking quality of semi-finished and finished batteries.	Manual work; working in frequent contact with lead vapors and dusts, and acids.
96	Charging batteries in battery production line	Manual work; working in contact with lead vapors and dusts, and acids.
97	Loading and transporting chemicals and chemical products in chemical production.	Manual and arduous work; working in frequent contact with toxic chemicals
98	Operating coal burners in chemical production	Manual work; working in frequent contact with dust, heat and high-concentration ^CO2^{and SO}2
99	^{Producing Na}2^SiO3^.	^{Working in frequent contact with high temperature, silica dust and Na2CO3}
100	Producing poly-aluminum chloride (P.A.C); producing CaCl₂	Working in frequent contact with high temperature and HCl.

IV. TRANSPORT

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Mechanical officers, mechanics, electricians on sea-going vessels and inshore vessels that transport goods, gasoline, oil	Extremely arduous and hazardous work; working in confined space; static working posture; working under impact of heat, tremor and noise.
2	Drivers of specialized trucks with a load of 60 tonnes or more	Arduous and dangerous work; working under impact of dust, noise and tremor.
3	Manually loading in the holds of ships	Extremely arduous work; working in confined space lacking oxygen; static working posture.
	Class-V working conditions
1	Officers, crew members, technicians, and mechanics of construction/special-purpose vessels	Regularly living on river, sea; arduous work; working under impact of waves and loud noise, etc.
2	Locomotive drivers	Working on trains; stressful work; working under impact of noise.
3	Drivers of trucks with a payload of 20 tonnes or more	Arduous and dangerous work; working under impact of dust, tremor and loud noise
4	Drivers of loaders or excavators with bucket capacity of at least 4m³	Arduous work; working under impact of loud noise and dust
5	Deck officers, electrical and radio officers, sailors, cooks, attendants, doctors, and chef stewards on sea-going vessels and inshore vessels that transport goods, gasoline, oil.	Arduous and dangerous work; working under impact of wind waves, tremor and noise.
6	Drivers of passenger vehicles with 80 seats or more.	Dangerous and stressful work; working under impact of noise and tremor.
7	Chief mechanics, mechanics of self-propelled ferries, towing boats for ferries and river ships with a power of 90 CV or higher.	Working in confined space and under impact of noise, tremor, heat and in frequent contact with gasoline, oil; static working posture.
8	Producing ship hulls and products from composite materials	Working in contact with toxic chemicals such as butanol, acetone, glass wool, etc.
9	Working on floating docks	Frequently working underground, in confined space lacking oxygen, and under impact of heat and loud noise
10	Diving to check ships, cleaning wharves, placing rollers to launch ships	Manual, dangerous and extremely arduous work; working in frequent contact with pathogenic microorganisms.
11	Train dispatchers	Very complicated and stressful work.
12	Operating gantry cranes	Working at height and under impact of violent tremor; highly unsafe.
13	Operating multi-function cranes.	Working at height and under impact of violent tremor; highly unsafe.
14	Operating wheel-mounted cranes.	Working in dusty and noisy environment with high labor intensity.
15	Operating reach stackers.	Working in dusty and noisy environment with high labor intensity.
16	Operating forklift trucks (used for cargo than containers).	Working in dusty and noisy environment with high labor intensity.
17	Driving trucks in the cargo handling line	Working in dusty and noisy environment with high labor intensity.
18	Manual handling.	Working in dusty and noisy environment with toxic gases and high labor intensity; arduous and dangerous work.
19	Working in Hai Van tunnel (operating machines and devices; fire safety; maintenance, cleaning; ensuring traffic safety, evacuation).	Working under impact of magnetic field due to resonance of electrical equipment; noise, petroleum gas, toxic gases and dust; extreme climate at a height of 127 m above the sea; sewage and detergents while cleaning the tunnel; lacking oxygen; facing high risk of occupational accidents and traffic accidents.
20	Operators of Vietnam Coastal Communication System.	Stressful work; working under impact of noise.
21	Technicians of Vietnam Coastal Communication System.	Stressful work; static working posture; working under impact of noise and electromagnetic field.
22	Seafarers working on ships for search and rescue, and salvage of sunken property, or salvage ships.	Extremely arduous and dangerous work; working under impact of waves, wind and bad weather; stressful work.
23	Supervisors and operators of the Vessel Traffic Service system.	Stressful work; working under impact of noise and ultra-high frequency electromagnetic field.
24	Technicians operating the Vessel Traffic Service system.	Stressful work; static working posture; frequently working on a radar tower with a height of 50m; working under impact of noise and ultra-high frequency electromagnetic field.
25	Seafarers working on public vessels or boats of port authorities.	Extremely arduous and dangerous work; working under impact of waves, wind, tremor and noise; stressful work.
26	Seafarers working on supply ships/boats, ships/boats for inspecting maritime signaling systems, lighthouses and navigational channels, or transporting pilots.	Extremely arduous and dangerous work; working under impact of waves, wind, tremor and noise.
27	Inspecting ships/vessels, hydraulic works, maritime signaling systems.	Dangerous work; working under impact of dust and toxic gases or vapors.
28	Inspecting marine works.	Working offshore, and under impact of waves and wind.
29	Installing, maintaining and repairing marker buoys, maritime marks and signals.	Working outdoor; arduous and dangerous work; working under impact of noise and tremor.
30	Managing and operating maritime signals and marks on navigational channels, estuaries, and along rivers on which waterway transport activities are performed.	Working outdoor; dangerous work; working under impact of waves, wind and tremor.
31	Workers in charge of managing and operating lighthouses.	Working outdoor; dangerous work; working under impact of waves and wind.
32	Scaffolding workers at shipyards	Working at height and in holds of ships (at a depth of 20-30m), carrying heavy loads while climbing. Tottery and dangerous workplace lacking oxygen and lighting; working under impact of dust and heat. Static working posture; confined workplace.
	Class-IV working conditions
1	Train dispatchers at centers (Hanoi, Da Nang, Ho Chi Minh City)	Complicated and stressful work.
2	Patrolling workers (railway)	Constantly moving; requiring intense concentration to inspect roads; working outdoor.
3	Feeding coal to steam locomotives	Arduous work; working in contact with dust, noise and heat
4	Driving railcars and trolleys	Constantly moving; working under impact of noise and dust
5	Operating river ship engines	Regularly living on rivers; working under impact of heat and noise, and in contact with oil and grease.
6	Shunting and coupling commanders at large stations (including Ha Noi, Da Nang and Ho Chi Minh City)	Working outdoor and under impact of noise and dust; constantly moving.
7	Kitchen staff and stewards on North-South trains	Working on trains; arduous work; working in confined space and under impact of heat and noise
8	Officers and crew members of river ships with a power of 90 CV or higher	Regularly living on rivers; arduous work; working under impact of waves, wind and noise
9	Cooks on construction/special-purpose vessels	Living on rivers and at sea as seafarers; working in confined space; arduous work
10	Captains of passenger ships and cargo ships	Working on board ships and under impact of noise, tremor and dust; stressful work.
11	Escorting, protecting and delivering goods, luggage, equipment carried on ships	Working on board ships and under impact of noise, tremor and dust.
12	Train dispatchers and traffic controllers at stations	Constantly moving; complicated and stressful work
13	Shunting commanders, coupling workers and train conductors at assembly stations	Working outdoor; arduous work; constantly moving; working under impact of noise and dust
14	Turning railroad switches at assembly stations	Working outdoor; manual and arduous work; working under impact of noise and dust
15	Grade I crossing and road-rail bridge flagmen	Arduous work; working under impact of noise, coal dust and dust mixtures
16	Patrolling railway tunnels	Constantly moving in dark tunnels; requiring intense concentration to inspect tunnels
17	Cleaning stations and cleaning railway wagons at train stations.	Working outdoor and under impact of noise and dust
18	Installing and making major repairs of railway signaling equipment	Working outdoor; arduous work; working under impact of dust
19	Screening and feeding sand to locomotives	Working outdoor; manual and arduous work; working under impact of very high-concentration dust
20	Operating locomotive parts and wagons washers	Arduous work; working in contact with oil, grease and toxic chemicals
21	Assisting in craning and hooking cable	Working outdoor; arduous and dangerous work.
22	Providing meals for workers in charge of making repairs and major repairs of railway	Working outdoor; arduous work; constantly moving; working under impact of heat and dust
23	Captain, vice-captain, sailors on ferries; operating towing boats for ferries	Working under impact of waves, wind, noise, tremor, and in frequent contact with oil and gasoline.
24	Operating wheel-type heavy equipment to build roads.	Arduous work; working under impact of heat, dust and tremor.
25	Driving trucks of from 7 tonnes to under 20 tonnes.	Arduous, stressful, noisy, shaking and dangerous work
26	Driving passenger vehicles with from 40 seats to under 80 seats	A lot of travel; dangerous and stressful work; working under impact of noise and tremor.
27	Directly providing technical guidance on building and repairing of ships at ports	Arduous work; working in confined space; static working posture
28	Producing mastic for wooden hulls of ships	Arduous work; static working posture; working in frequent contact with chemicals.
29	Checking tickets, controlling movement of vehicles at bridge, road, and ferry tollbooths	^{Working under impact of dust, noise, gasoline vapor, toxic gases (CO}2^{, CO…) and seasonal changes in weather}
30	Stopping and guiding vehicles to get on weighing scales at weigh stations	Working outdoor and under impact of dust, noise, ^{gasoline vapor, toxic gases (CO}2^{, CO…)}
31	Repairing cranes, machinery and equipment used for construction at traffic works.	Working outdoor and at height, under impact of changes in weather; static working posture; dangerous work
32	Service crew members (cooking, serving and cleaning railroad cars and berths) on passenger trains	Concurrently doing different duties; hard work; working on trains during day and night. Working under impact of dust, noise, tremor and climate changes by regions in a short time.
33	Directly managing and operating Hai Van tunnel (working at Operation Control Center (OCC)); protecting the ventilation system; cleaners, arborists).	Working under impact of strong magnetic field; noise, petroleum gas, toxic gases; extreme climate at a height of 127 m above the sea; sewage and detergents while cleaning the tunnel; lacking oxygen; dusty and smoky; facing high risk of occupational accidents and traffic accidents.
34	Bridge construction workers	Involving a lot of travel; manual outdoor work; working under impact of dust, noise, toxic gases; facing high risk of occupational accidents and traffic accidents
35	Tollbooth collectors and their assistants.	^{Working under impact of dust, noise, petroleum gas, toxic gases (CO, CO2, etc.); working outdoor; facing high risk of traffic accidents}
36	Painting speed humps and median barriers	Working under impact of dust, noise, petroleum gas, toxic gases; working outdoor; facing high risk of traffic accidents
37	Driving road graders.	Arduous work; working under impact of noise, tremor and dust
38	Refueling locomotives and railroad cars	Hazardous work; working in frequent contact with gasoline, oil and petrochemical products.
39	Operating and controlling railway bridges.	Working in frequent contact with dust and noise in excess of permissible limits
40	Removing rust from metal.	Arduous work; static working posture; working under impact of noise, tremor and high-concentration dust
41	Operating rammers, shakers, punching machines, impact wrenches.	Arduous work; working under impact of noise and violent tremor
42	Producing concrete (concrete sleepers, concrete components, etc.).	Working outdoor; arduous, noisy and dusty work;
43	Repairing and cleaning Thang Long bridge.	Working outdoor and under impact of noise and dust in excess of permissible limits.
44	Flagmen at railroad crossings.	Working outdoor and under impact of noise and dust in excess of permissible limits. Arduous and stressful work; facing high risk of accidents.
45	Ship mechanics	Working in dusty and noisy environment with toxic gases and high labor intensity; arduous and dangerous work.
46	Officers, sailors, and crewmembers on ships.	Working in dusty and noisy environment with toxic gases and high labor intensity; arduous and dangerous work.
47	Repairing chassis and engines of cars and reach stackers.	Working under impact of dust, noise and toxic gases; arduous work.
48	Bottling and producing industrial gases.	Working under impact of dust and noise; static working posture; dangerous work.
49	Checking and repairing pressure vessels.	Working under impact of dust and noise; dangerous work.
50	Workers in charge of managing inland waterways.	Working outdoor; arduous work; working under impact of waves and wind.
51	Workers in charge of surveying, repairing and maintaining inland waterways.	Working outdoor; arduous work; working under impact of waves and wind.
52	Workers in charge of installing inland navigation aids	Working outdoor and under impact of waves and wind.
53	Captain, chief mechanic working on ships in charge of managing inland waterway.	Working outdoor; arduous work; working under impact of waves and wind.
54	Information service staff of Vietnam Coastal Communication System.	Working under impact of noise and electromagnetic field.
55	Operating, maintaining and repairing radars at radar stations of maritime navigation systems on navigational channels.	Working under impact of electromagnetic field; frequently working at height.
56	Workers in charge of managing and operating navigational channels.	Working at shifts, and under impact of electromagnetic field; stressful work
57	Receiving, transmitting and processing maritime security and safety information.	Stressful work; working under impact of electromagnetic field.
58	Operating railway construction equipment (stone graders, tie inserting machines, rail welding machines, rail grinding machines, excavators, multi-purpose machines)	Arduous work; muddy and wet workplace; working under impact of noise and tremor. Working in direct contact with acids, alkali, soda, etc.
59	Woodwork, bricklaying, metal work, mechanical repairing at sites (railway)	Working under impact of alkali vapor, noise, tremor and dust in excess of permissible limits
60	Dispatching ships, machines, equipment and personnel at ports	Always working in hazardous and dangerous environment with very high-concentration dust, bad weather and danger to other equipment.
61	Manufacturing ships’ hulls	Static working posture; arduous work; working in frequent contact with noise and dust
62	Operating corrugated iron cleaning line.	Working in confined space lacking oxygen and light, and in frequent contact with noise and dust.
63	Weighing cargo at electronic weigh stations at ports	Working in frequent contact with noise and dust; stressful work.
64	Repairing and maintaining mechanical equipment at ports	Arduous work; static working posture; working in contact with oil, grease, noise and dust
65	NDT technicians	Static working posture; working in confined space and in contact with chemicals and radioactive substances

V. CONSTRUCTION OF TRANSPORT WORKS, WAREHOUSES AND TERMINALS

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Semi-automated immersion and maintenance of sleepers for anti-corrosion purposes	Arduous, dangerous and hazardous work; working in direct contact with strong chemicals (phenol) with very high concentration.
2	Civil engineering divers.	Extremely arduous and dangerous work; static working posture; working under impact of high pressure.
3	Managing and operating lighthouses Truong Sa Archipelago.	Working under frequent impact of waves, wind, noise and extreme climate.
	Class-V working conditions
1	Operating tamping machines.	Arduous work; working under impact of noise and violent tremor
2	Manually handling cargo at ports.	Manual, outdoor and extremely arduous work
3	Manually handling cargo at train stations, warehouses and terminals.	Manual, outdoor and extremely arduous work.
4	Pulling up and installing steel girders	Arduous and dangerous work; working under impact of noise and tremor.
5	Pouring concrete, building bridge abutments and piers.	Arduous and dangerous work; working under impact of noise and tremor.
6	Processing steel planks and piles; raising and lowering bridge beams.	Extremely arduous and dangerous work; working under impact of noise and tremor.
7	Removing rust by sandblasting	Arduous work; working outdoor and under impact of noise, tremor and dust of very high concentration.
8	Operating pile drivers in construction	Outdoor, arduous and dangerous work; working in contact with oil, grease, noise; static working posture.
9	Operating floating cranes in bridge construction and installation of bridge beams	Working outdoor; arduous and dangerous work; working under impact of loud noise.
10	Fastening rivets on steel structures.	Working outdoor; arduous and dangerous work; working under impact of noise, tremor, heat, CO and CO₂
11	Boring into concrete to make pier foundation piles; bentonite grouting for boreholes	Outdoor, manual and arduous work; static working posture; working under impact of chemicals and noise
12	Working with pier foundation among steel piles and planks.	Working outdoor; arduous and dangerous work; working under impact of noise.
13	Mixing paint and painting bridge beams.	Working in contact with toxic chemicals; static working posture.
14	Welding steel beams.	Arduous, dangerous and stressful work; working in frequent contact with toxic gases.
15	Using X-ray machine to photograph the welding joints of steel beams and deck.	Working outdoor; static working posture; working under direct impact of X-ray.
16	Manual shaft digging and sinking.	Manual, arduous and dangerous work; working under impact of dust and noise
17	Destroying rock, piers, and beams underwater	Arduous and dangerous work.
18	Operating hot asphalt mixer (without control room).	Working under impact of high temperature, noise, violent tremor, toxic gases and thick dust.
19	Manually feeding asphalt melting machine.	Extremely arduous and hazardous work; working under impact of heat.
20	Manually melting, pouring hot asphalt, and mending road surface	Arduous work; working in frequent contact with toxic gases, vapors and dust, and thermal radiation.
21	Building, assembling and repairing lighthouses.	Manual, arduous and dangerous work; working under impact of waves and wind.
22	Managing and operating lighthouses on islands and at estuaries.	Working under impact of waves, wind, and extreme climate.
23	Sweeping coal and fertilizers in the holds of ships or barges.	Working in confined space lacking oxygen; manual and arduous work; static working posture.
24	Chocking divers.	Arduous and dangerous works; static working posture.
25	Painting and removing rust from ship bottoms	Arduous work; static working posture; working at a smelly workplace lacking oxygen.
26	Surveying, checking and announcing navigable channels at river mouths and estuaries.	Frequently working outdoor, on rivers, in smelly and dirty environment.
27	Turning on lights on buoys on navigable channels, river mouths, lakes, and along navigable rivers.	Working outdoor; dangerous work; working under impact of waves, wind and tremor; static working posture.
28	Ironworkers, iron welders at bridge construction and repair works	Working outdoor; arduous and dangerous work; working under impact of dust, noise, tremor, CO and CO2, etc.
29	Making railway refurbishment and major repairs	Working outdoor; manual and arduous work.
	Class-IV working conditions
1	Repairing and maintaining railways and bridges	Working outdoor; manual, arduous and dusty work.
2	Cleaning train stations, cleaning railroad cars at train stations (Ha Noi, Da Nang, Ho Chi Minh City)	Working outdoor and under impact of noise and dust
3	Driving cranes of 20 tons or more	Arduous work; hot workplace.
4	Driving bulldozers	Arduous work; working under impact of noise, tremor and dust
5	Performing watch duties at management stations of roads running along rivers, coastal roads and lake beds	Working on rivers; arduous work.
6	Driving electric cranes and diesel-powered cranes at ports	Working under impact of noise, dust and heat
7	Operating multi-function cranes at ports	Working in frequent contact with dust and loud noise
8	Casting prestressed concrete bridge beams, centrifugal pipes	Arduous work; working under impact of loud noise, heat and dust.
9	Welding steel pipes serving bored piles.	Working outdoor; static working posture; working under impact of toxic gases (welding gas).
10	Making formworks to cast bride beams, abutments and piers; building suspension bridges.	Outdoor, arduous and dangerous work.
11	Operating concrete and concrete component rammers	Arduous work; working under impact of noise, tremor and dust
12	Casting prestressed concrete	Working outdoor; arduous, noisy and dusty work.
13	Operating automated hot asphalt mixing station (with control room).	Working under impact of noise; stressful work.
14	Operating plastic boilers, stone driers, insulating boilers at hot asphalt mixing stations.	Working outdoor and under impact of toxic gases and thick dust.
15	Working at hot asphalt mixing stations (transporting materials, fuel, feeding rock flour to the conveyor belt; shoveling rock flour discharged by the drier; cleaning oil, coal, etc.; spraying oil on the tank of the hot asphalt truck).	Working outdoor; manual and arduous work; working in contact with toxic gases and dust
16	Repairing mechanical equipment at hot asphalt mixing stations	Working outdoor; static working posture; working under impact of toxic gases, vapors and dust
17	Driving road rollers.	Arduous work; working under impact of noise, tremor, heat, and thick dust
18	Remote-controlling road dust cleaners with compressed-air blowers or hot asphalt sprayers or pavers	Working outdoor and under impact of noise, tremor, dust, toxic gases and heat
19	Digging, shoveling, leveling road surface behind the hot asphalt paver.	Working outdoor; manual and arduous work; working under impact of heat and toxic gases and vapors.
20	Producing concrete, asphalt, emulsion.	Working in frequent contact with heat, rock dust, toxic gases (hydrocarbide acid and other additives).
21	Maintaining and repairing roads and bridges	Working outdoor; manual and arduous work; working under impact of dust
22	Maritime pilots	Standing in the bridge of the ship throughout the journey; requiring intense concentration; stressful work.
23	Bagging phosphate, apatite, phosphate fertilizer, urea, etc. in depots, inland ports, seaports and train stations	Manual and arduous work; static working posture; working under impact of toxic dust
24	Performing topography and geological survey on land, on rivers, and at sea	Arduous work; a lot of travel; working under impact of dust and bad weather.
25	Repairing, installing electrical systems and pipelines in the holds of ships	Arduous work; working in confined space; static working posture.
26	Working in the holds of ships or barges	Working under impact of heat, noise, and at a workplace lacking oxygen.

VI. ELECTRICITY

No.	Occupation or work	Working conditions
Class-V working conditions
1	Operating coal conveyor belts in basements and thermal power plants	Constantly moving; consuming a large amount of energy; dirty workplace with very high-concentration dust.
2	Operating electrical systems and machines in caverns/tunnels of hydroelectric power plants	Complicated works; a lot of travel; working at a poorly ventilated place and under impact of noise and tremor during the shift.
3	Repairing communication cables and electric cables in caverns/tunnels	Arduous work; working in frequent contact with grease and oil, at a place lacking oxygen, and under impact of tremor and noise
4	Removing rust and paint in closed containers in caverns/tunnels	Working in confined place lacking light and oxygen; static working posture; working under impact of chemicals contained in paint and ^CO2
5	Removing rust and paint in caverns/tunnels by sandblasting	Arduous work; working under impact of noise, tremor, high-concentration dust and chemicals contained in paint and ^CO2
6	Drilling and spray concrete in caverns/tunnels	Arduous work; consuming a large amount of energy; working under impact of dust, loud noise and tremor in excess of permissible limits.
7	Performing spectrum analysis and ultrasonic testing of metals in power plants	Working under impact of radioactive substances; with heat, noise and dust; sometimes working at the place lacking oxygen
8	Operating steam drums at thermal power plants.	Dangerous work; working under impact of high temperature and thick dust
9	Repairing mechanical and hydraulic equipment at intake and spillway gates	Arduous and dangerous work (working at a height of more than 30 m); working at confined, slippery and dangerous space.
10	Repairing water pumps of hydroelectric power plants.	Arduous work; working in confined, slippery and wet place, and under impact of heat, noise, petrol and oil vapors.
11	Operating and repairing bridge cranes in electrical generator basements.	Arduous work; working in frequent contact with dust, grease, oil and loud noise
12	Operating and repairing air ventilation systems in caverns/basements/tunnels of hydroelectric power plants	Arduous work; working in contact with dust, grease, oil and loud noise
13	Managing and operating 500KV transmission lines and substations.	Arduous work; travelling through regions with complex terrain and climate; working in frequent contact with high and dangerous electromagnetic field
14	Live-line repairing transmission lines and substations with a voltage above 01 kV	Arduous work; frequently working at height; stressful work.
	Class-IV working conditions
1	Operating furnaces of thermal power plants.	Dangerous work; working under impact of high temperature and thick dust
2	Repairing and maintaining furnaces of thermal power plants	Arduous work; working under impact of heat and very high-concentration dust, and in frequent contact with glass wool that may cause skin irritations and allergy.
3	Repairing hydraulic equipment, main machines and main electrical equipment of power plants	Working in contact with grease, oil, dust and noise; static working posture
4	Operating machinery and electrical systems of power plants	Complicated work; constantly moving; working under impact of noise and very high-concentration dust
5	Leaders of heat control and operation teams of thermal power plants	Constantly moving; working under impact of heat, noise and dust in excess of permissible limits
6	Operating circulating pumps of thermal power plants	Working underground in a wet place, and under continuous impact of loud noise.
7	Leaders of coal transport teams of thermal power plants	Working under impact of noise and high-concentration of dust
8	Operating turbines of power plants	Working in frequent contact with tremor and loud noise
9	Operating high-pressure air compressors of 8kg/cm² or higher	Working under impact of tremor and loud noise
10	Repairing steam valves of thermal power plants	Working in confined space and under impact of heat and very high-concentration dust; static working posture
11	Performing testing for electrical equipment and high voltage electricity	Working under impact of high electromagnetic field, and in frequent contact with high voltage electricity; threatening life
12	Repairing automatic equipment of power plants	Working under impact of dust, tremor and loud noise
13	Making mechanical and electrical repairs in power plants	Static working posture; working under impact of noise, tremor and dust.
14	Repairing temperature control equipment of power plants	Working in frequent contact with heat, tremor and loud noise
15	Repairing fuel systems of power plants, including: coal handling system, CSU, GSU, coal conveyor belt, bridge crane and tower crane).	Dirty and dusty workplace; static working posture
16	Doing industrial cleaning job at thermal power plants	Manual work; working under impact of heat, noise and very high-concentration dust
17	Operating the intake gate of pump station on the left bank, opening and closing device for the right gate of spillway of Hoa Binh hydropower plant	Arduous work; working at a wet place with oil and grease, and under impact of loud noise
18	Repairing and charging batteries in caverns/tunnels of power plants	^{Working at a place lacking oxygen, and in frequent contact with H}2^SO4^{, CO}2
19	Repairing air compressors and equipment of transformer stations	Working in confined space with grease and oil, and under impact of loud noise
20	Performing chemical experiments	Working in frequent contact with grease, oil, toxic chemicals, noise and dust
21	Transformer oil filtering in caverns/tunnels	Working in confined space and in frequent contact with grease and oil, and under impact of loud noise
22	Making minor mechanical and electrical repairs in caverns/tunnels of power plants	Poorly-ventilated workplace; static working posture; working under impact of loud noise.
23	Spraying concrete with portable air compressor	Arduous work; working at a dirty place under impact of dust, noise and tremor in excess of permissible limits
24	Driving 350-ton bridge cranes in caverns/tunnels of hydroelectric power plants	Working at height and under impact of tremor and loud noise
25	Doing industrial cleaning job in caverns/tunnels of hydroelectric power plants	Manual work; working at a place lacking oxygen and under impact of dust, tremor and loud noise
26	Workers operating transformer stations of 110 KV or higher	Stressful work; working under impact of high electromagnetic field which adversely affects health
27	Geological workers performing topography surveys.	Working outdoor; a lot of walking; consuming a large amount of energy
28	Adjusting boilers of thermal power plants	Working next to devices with temperature from 160⁰C to 540⁰C, and under impact of noise and dust.
29	Operating coal crushers in thermal power plants	Working under impact of heat, noise, and very high-concentration coal dust
30	Operating conveyor belts, shoveling and collecting coal in thermal power plants	Manual and arduous work; working under impact of heat, noise and very high-concentration coal dust
31	Operating oil pumps for furnaces of thermal power plants (operating the oil house).	Working in frequent contact with oil, grease, noise and high temperature
32	Operating slag discharge system of the thermal power plant (slag pump, dust removal, irrigation disposal, etc.)	Working in frequent contact with heat, loud noise and dust in excess of permissible limits
33	Checking heat (major, assistant duty) in thermal power plants.	Working in frequent contact with heat, tremor, loud noise and dust in excess of permissible limits
34	Repairing electrical equipment in power plants	Static working posture; working under impact of noise, tremor and dust.
35	Driving coal cars	Working in frequent contact with heat, dust and noise in excess of permissible limits
36	Hooking coal cars in thermal power plants	Working outdoor and under impact of bad weather (hot, cold, wind, etc.), noise and high-concentration coal dust.
37	Shoveling slag discharged from the tail of furnace of the thermal power plant	Arduous and monotonous work; working in frequent contact with heat and dust
38	Operating gas turbines.	Working under impact of tremor, heat and noise in excess of permissible limits.
39	Welding and grinding towards-water wings, turbine wings of hydroelectric power plants.	Working underground at a place lacking oxygen; in frequent contact with noise, high temperature, toxic gases and steel dust
40	Managing and operating transmission lines of from 110KV to under 500KV.	Travelling through regions with complex terrain and climate; working in contact with high electromagnetic field that may adversely affect health.
41	Doing industrial cleaning of electrical substations of 500 KVA.	Monotonous work; working in contact with dust and high electromagnetic field that is dangerous and may adversely affect health.
42	Producing composite meter boxes.	Working in contact with heat, high-concentration toxic chemicals that may cause dyspnea and prostration.
43	Repairing and drying transformers with a capacity of 200 KVA or more.	Arduous work; working in frequent contact with oil, grease and high temperature
44	Operating aluminum cable braiding machine	Working under direct impact of aluminum dust and loud noise
45	Operating centrifugal concrete pole casting machine	Working under impact of tremor, noise, dust
46	Producing electrical insulating materials.	Arduous work; working in contact with high temperature and toxic chemicals (Phenol, Formalin, Amoniac…) with high concentrations
47	Operating and repairing cranes in turbine and generator chambers of thermal power plants	Working at height; stressful work; working under impact of dust, loud noise and violent tremor
48	Operating cranes in coal depots of thermal power plants	Working at height; static working posture; working under impact of dust, loud noise and tremor.
49	Operating coal crushers of thermal power plants	Working at height; constantly moving up and down; working under impact of heat, dust and loud noise
50	Operating and repairing desulfurization equipment in thermal power plants	Working at various heights and depths (from 25 m in height to 10 m in depth); working in contact with closed radiation sources, and under impact dust and noise
51	Repairing refrigeration equipment in thermal power plants	Working at height; static working posture; working in frequent contact with refrigerants, and under impact of dust, heat, and noise.
52	Operating and repairing measuring equipment and controlling equipment in thermal power plants	Working at various heights and depths (from 50 m in height to 10 m in depth); stressful work; static working posture; working under impact of dust, heat, noise and radiation
53	Operating and repairing circulating pumping stations for slag reservoirs of coal-fired thermal power plants.	Arduous work; working under impact of noise, tremor, and in frequent contact with HCl vapor.
54	Testing and calibrating steam turbines of thermal power plants.	Dangerous work; static working posture; working under impact of violent tremor and noise.
55	Leaders of teams in charge of testing and calibrating boilers and turbines of thermal power plants	Dangerous work; static working posture; working under impact of violent tremor and noise.
56	Operating and repairing hydrogen electrolysis equipment in thermal power plants	^{Working in frequent contact with KOH vapor and H2, and under impact of loud noise}
57	Operating and repairing circulating water channels and discharging equipment at slag reservoirs in thermal power plants	Frequently working outdoor; a lot of travel (more than 15km per day); arduous work; working under impact of dust
58	Repairing communications equipment (communications cables, telephones, speakers, walkie-talkies, surveillance cameras) in thermal power plants	Constantly moving up and down (from 10 m in depth to 50 m in height); static working posture; working under impact of dust, noise, and electromagnetic field.
59	Driving slag trucks in thermal power plants	Working in areas where electrical devices are installed, narrow paths; stressful work; working under impact of noise, tremor, and heat.
60	Measuring, checking, transferring coal and oil at thermal power plants.	Frequently working outdoor; checking in caverns and tunnels; static working posture; working under impact of heat, dust, and oil vapor.
61	Sampling coal and oil in thermal power plants.	Frequently working outdoor; checking in caverns and tunnels; static working posture; working under impact of heat, dust, and oil vapor.
62	Operating ash and slag separating equipment and systems in thermal power plants	Frequently working outdoor; working under impact of heat, dust.
63	Operating coal-unloading stations in thermal power plants.	Frequently working outdoor on the water; working under impact of heat, dust.
64	Driving self-propelled cranes in thermal power plants.	Stressful work; working under impact of heat and dust.
65	Managing and operating electrical substations from 110 KV to below 500 KV.	Arduous work; a lot of travel; working in contact with high electromagnetic field
66	Repairing and cleaning condensing chambers and cooling pumps of steam turbines.	Working in confined space lacking light and oxygen, and under impact of heat.
67	Replacing filters of steam turbines.	Working at height and under impact of glass dust and noise.
68	Working with industrial radiography machines; performing penetrant testing (PT) or magnetic particle testing (MT).	Working in contact with toxic chemicals and under impact of UV ray and radiation
69	Repairing and maintaining equipment of stations from 110 KV to below 500 KV.	Dangerous work; working under impact of high electromagnetic field.
70	Repairing, maintaining gas turbines, steam turbines, heat recovery units, and generators in thermal power plants	Stressful work; requiring great precision; working under impact of heat, dust, and noise.
71	Blasting and coating metal on turbines in thermal power plants.	Working in contact with silica dust, toxic chemicals, and under impact of radiation.
72	Managing and operating medium-voltage and low-voltage grids.	Working outdoor at height, and in direct contact with power sources.
73	Operating and maintaining diesel generating stations.	Working in frequent contact with oil and grease, and under impact of noise
74	Operating and maintaining mid-voltage substations.	Stressful work; working in contact with high magnetic field.
75	Testing, inspecting and calibrating electrical metering devices	Working in direct contact with lead and high electromagnetic field.
76	Hanging, removing, checking and maintaining electrical metering devices	Working outdoor at height, and in direct contact with power sources.
77	Driving cranes serving electrical repairs	Working outdoor and under impact of heat, dust, noise; stressful work.
78	Performing transformer oil testing	Working in frequent contact with grease, oil, toxic chemicals, noise and dust
79	Operating solar power plants.	Frequently checking and handling problems at dangerous places with high voltage or on lakes or roof of house at outdoor distribution station
80	Surveying, installing and repairing solar power systems	Arduous work; frequently working at height; stressful work.
81	Performing watch duties, managing and handling problems occurring on electrical telecom systems	Stressful work; working under impact of noise and magnetic field.
82	Telephone operators at electrical customer service centers	Stressful work
83	Building and repairing utility poles, transmission lines and equipment of electrical substations with a voltage of less than 110 KV	Working at height; arduous work; static working posture; requiring strength; frequently working outdoor at a hot and dangerous place
84	Performing watch duties and handling problems occurring on electrical information technology systems	Frequently working in watch rooms, engine rooms; travelling to provinces to handle incidents, outdoor systems or in limited space.
84	Establishing and developing shared software system of Vietnam Electricity	Frequently working with computers during the shift; receiving information from customers via telephone, providing counseling, answers and instructions
85	Operating, repairing and maintaining optical networks for electricity operations.	Working in contact with electricity and electromagnetic field; static working posture
86	Performing chemical operations in thermal power plants (treating water, furnace water and wastewater)	Working in laboratories, workshops and outdoor; working at height. Working in contact with chemicals, glue, alkali, acids and loud noise.

VII. COMMUNICATIONS, POST AND TELECOMMUNICATIONS

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Building, repairing and maintaining antenna masts (with a height of at least 50m)	Arduous and dangerous work; working at height and under impact of high-frequency and very high-frequency electromagnetic field while performing repair and maintenance duties.
2	Installing, repairing and maintaining communication equipment on antenna masts (with a height of at least 50m).	Arduous work; frequently working at height; very dangerous; static working posture and working under impact of high-frequency and very high-frequency electromagnetic field while performing repair and maintenance duties.
	Class-V working conditions
1	Operating, maintaining and repairing satellite communications equipment (lotus towers)	Working in frequent contact with very high-frequency electromagnetic field in excess of permissible limits
2	Building, maintaining and repairing underground cables	Manual and arduous work; working in confined space lacking oxygen; performing repair and maintenance duties at dirty and smelly places
3	Couriers in highland areas	Arduous work; travelling through highland and mountainous areas, regardless of bad weather
4	Operating, maintaining and repairing microwave equipment at stations in highland and forest areas	Dealing with complicated works; working under impact of electromagnetic field
	Class-IV working conditions
1	Operating, maintaining and repairing microwave equipment at stations in mountainous areas	Working under frequent impact of electromagnetic field and solving complicated works.
2	Couriers in midland and mountainous areas and plains (with routes of at least 45km in length)	Walking and travelling by bicycle under impact of bad weather; arduous work.
3	Operating, maintaining and repairing transmitters and receivers with capacity of at least 1KW	Working under frequent impact of electromagnetic field in excess of permissible limits
4	Operating, maintaining and repairing satellite communications equipment (intelsat towers)	Frequently working with electromagnetic field in excess of permissible limits
5	Performing press operations and publishing at centers (Ha Noi and Ho Chi Minh City)	Frequently working at night; arduous work; working in contact with dust and loud noise
6	Performing postal operations and publishing	Manual and arduous work; working under impact of dust.
7	Preserving and issuing stamps for pleasure and storage (using arsenic for preserving stamps)	^{Working in frequent contact with highly toxic chemicals such as arsenic and CO}2
13	Perforating stamps by HKA 5/68 machines (made in Germany)	Static working posture; working under impact of loud noise in excess of permissible limits.
8	Performing telephone operations (grade-I, grade-II telephone operators)	Working in frequent contact with screens; stressful work.
9	Performing non-voice operations (grade-I, grade-II telephone operators)	Working in frequent contact with screens; stressful work.
10	Computing (data transmission, phone book management, software processing and programming)	Working in frequent contact with screens; stressful work.
11	Producing plastic communication cable ducts.	Working in frequent contact with heat, toxic gases, vapors and dust
12	Cutting, bending, welding iron for casting concrete, communication components.	Arduous work; working in frequent contact with dust, noise and under impact of welding gases and arc flash
13	Semi-manually mixing and pouring concrete for producing precast concrete components used in communication components	Working outdoor; manual and extremely arduous work; working in contact with noise and dust; moving according to construction works.
14	Installing, maintaining and repairing transmission equipment on local telephone routes and networks	Working outdoor; arduous and dangerous work; static working posture
15	Directing the construction of antenna masts	Frequently working outdoor, And under impact of bad weather and dust; stressful work.
16	Repairing subscriber terminal devices (telephones, faxes, pagers, etc.)	Working in confined space; static working posture; working in frequent contact with chemicals
17	Patrolling to protect optical fiber cables	Working outdoor; frequently patrolling, regardless of day or night time, and bad weather
18	Installing, repairing and maintaining optical fiber routes	Arduous work; static working posture; frequently working outdoor, regardless of day or night time, and bad weather
19	Conducting surveys, measurement, and installing communication works	Arduous work; static working posture; working under impact of electromagnetic field
20	Operating, repairing, maintaining IP gateways and telephone exchanges that have 10,000 numbers or more, satellite terrestrial communication stations, technology centers, and submarine cables	Monotonous work; frequently working under impact of electromagnetic field.
21	Escorts cum drivers of postal trucks with a capacity of 3.5 tonnes or more, or on the routes belonging to level II networks in mountainous provinces	Arduous and dangerous work; working under frequent impact of tremor and shock
22	Postal escorts on the North - South railway.	Arduous work; working under impact of dust, tremor and shock.
23	Installing, operating, repairing and maintaining communication equipment at communication stations placed along 500 KV transmission lines.	Frequently working on mountainous and hilly land, and in contact with microclimate and electromagnetic field in excess of permissible limits
24	Controlling, receiving and measuring radio frequency and transmitters.	A lot of travel; working outdoor and at height; static working posture; stressful work.
25	Operating, repairing and maintaining fiber optic equipment and fiber optic splicing machines	A lot of travel; working outdoor, and in contact with laser
26	Operating, repairing and maintaining VSAT equipment, lease line equipment	Working in mountainous areas, islands, etc., and in contact with bad microclimate and electromagnetic field.
27	Inputting and verifying data on transferred money by computer.	Monotonous work; high working intensity; visual concentration; stressful work.
28	Postal couriers (postman) in Ha Noi and Ho Chi Minh City.	Working outdoor; frequently traveling on roads with dangerous and high traffic density; working under impact of microclimate, noise and dust
29	Preparing acids, battery charging.	^{Working in frequent contact with lead dust, vapors, and H}2^SO4^{of high concentration}
30	Datapost equipment operators	Working in contact with noise, toxic gases; stressful work
31	Collectors	Working in contact with noise and dust; arduous work.
32	Postman	Working outdoor; frequently traveling on roads with dangerous and high traffic density; working under impact of microclimate, noise and dust
33	Postal drivers	Arduous and dangerous work; working under frequent impact of tremor and shock

VIII. CEMENT PRODUCTION

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Bagging cement with semi-automatic 4-spout machines	Extremely arduous work; static working posture; working under impact of dust and noise in excess of permissible limits.
	Class-V working conditions
1	Bagging cement with automatic rotating machine	Arduous work; working in frequent contact with heat and dust in excess of permissible limits
2	Operating jaw crushers, hammer crushers	Working in contact with loud noise and dust in excess of permissible limits
3	Shoveling clinkers from furnaces	Manual and extremely arduous work; working under impact of heat, noise and very high-concentration dust.
4	Rotating valves on the furnace top	Working on very hot and high floor with dust in excess of permissible limits
5	Operating clinker kilns (vertical shaft kilns)	Manual and arduous work; working under impact of heat, dust, and toxic gases and vapors
6	Manually bagging cement	Arduous work; working in frequent contact with heat and very high-concentration dust
7	Cleaning under mud grinding mill.	Manual and arduous work; working under impact of noise; frequently soaking in dirty water.
8	Mixing and cleaving stones.	Manual, outdoor and extremely arduous work.
	Class-IV working conditions
1	Operating cranes and material spraying equipment	Working in frequent contact with dust and noise in excess of permissible limits
2	Operating clinker conveyor belt scale	A lot of travel; working under impact of noise and very high-concentration dust
3	Operating electric dust filter, dust sleeve filters and dust screw conveyors	Working on a high floor; a lot of travel; working under impact of noise and very high-concentration dust
4	Mixing mineral for mud grinding mill	Arduous work; working under impact of loud noise and dust
5	Lubricating clinker furnace	A lot of travel; working under impact of noise and very high-concentration dust
6	Operating automatic clinker furnace (with central control room)	A lot of travel; working under impact of high temperature and dust
7	Operating sluiceway valve	Working in confined space and under impact of heat and thick dust; static working posture
8	Manually smashing clinker	Arduous work; a lot of travel; working under impact of noise and dust
9	Operating slag conveyors, slag, soil and stone bunkers	A lot of travel; working under impact of noise and very high-concentration dust
10	Taking balls in and out	Arduous work; working under heat and loud noise
11	Operating mud grinding mill	Working at a dirty and wet place; a lot of travel; working under impact of loud noise
12	Operating burners	Working in contact with heat, loud noise and dust in excess of permissible limits
13	Pumping room	Working in contact with heat, loud noise and dust in excess of permissible limits
14	Operating cement material crushers	Working under impact of heat, dust and loud noise
15	Operating chain conveyor for transport clinker	Constantly moving; working in contact with loud noise and very high-concentration dust
16	Operating lifting buckets	Constantly moving; working in contact with loud noise and very high-concentration dust
17	Operating rubber conveyor belts for transport clinker	Working in contact with loud noise and dust in excess of permissible limits
18	Operating fule pumps	Working in contact with loud noise and dust in excess of permissible limits
19	Setting fire for dryers of coal houses	^{Arduous work; working under impact of heat, dust and CO}2
20	Doing industrial cleaning job for heads of furnaces	Manual and arduous work; working under impact of heat and dust.
21	Moving cement by trolleys.	Manual and arduous work; working under impact of heat and dust.
22	Unloading coal slag and plaster.	Manual and arduous work; working outdoor and under impact of coal dust in excess of permissible limits
23	Processing materials for producing cement by vertical shaft kilns (semi-manually breaking, crushing, grinding stones).	Manual and arduous work; working outdoor and under impact of dust in excess of permissible limits
24	Repairing equipment for cement production in primary workshops	Arduous work; static working posture; working under impact of noise, heat and thick dust
25	Cleaning primary workshops	Manual and arduous work; static working posture; working under impact of noise and thick dust
26	Rolling clinker into small balls in the vertical shaft kiln.	Manual and arduous work; working under impact of heat and dust.
27	Operating clinker rotary kilns.	Working under impact of heat, dust and noise.
28	Operating clinker loaders in the warehouse.	Arduous work; working under impact of thick dust and noise
29	Operating cyclone heat exchangers.	Manual and arduous work; working under impact of heat, dust.
30	Operating cement silos.	Manual and arduous work; working under impact of heat, dust.

IX. PRODUCTION OF PORCELAIN, GLASS, MISCELLANEOUS PLASTICS, PAPER AND TIMBER

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Manually and semi-manually mixing chemicals for producing PU foam	Arduous and hazardous work; working in frequent contact with toxic chemicals adversely affecting nervous system such as toluene, toluene diisocyanate, propylene glycol; ^NH3
2	Operating quartz crusher	Arduous work; working under impact of dust and loud noise
3	Plating the inner surface of vacuum flask	Arduous and hazardous work; a lot of travel; working under impact of heat and toxic substances and ^NH3 of high concentration.
4	Mouth-blowing glass	Arduous and hazardous work; hot workplace.
5	Concocting ink	Manual work; working in frequent contact with arsenic.
6	Heating glaze	Extremely arduous and dangerous work; working under frequent impact of high thermal radiation, toxic gases and vapors
	Class-IV working conditions
1	Screwing the bottom of the vacuum flask	Arduous work; working in contact with high temperature and loud noise
2	Operating and repairing round porcelain oven	^{Arduous work; working under impact of heat, dust and CO2}
3	Moving bags in and out the round oven	Manual and arduous work; working in frequent contact with high temperature and^CO2
4	Producing speakers on lampposts; cutting necks of bulbs; screwing heads of bulbs; screwing heads of vacuum flasks; cutting necks and bottoms of vacuum flasks; exhausting vacuum of bulbs and vacuum flasks	Arduous work; working in confined space; static working posture; working in frequent contact with high temperature, ^CO2 and noise during the shift
5	Melting glass	Arduous work; very hot and dusty
6	Taking, cutting glass; keeping molds for blowing vacuum flasks and bottles; operating vacuum flasks and bottles, and helping to pull tubes	Manual and arduous work; working in frequent contact with high temperature and CO2
7	Operating gas furnaces (coal gas)	^{Manual and arduous work; working under impact of heat, dust, CO and CO2}
8	Operating plaster crushers and mixers	Manual and arduous work; working under impact of dust and noise.
9	Drying plaster molds	^{Arduous work; working under impact of heat, dust and CO2}
10	Baking enamel	^{Arduous work; working in contact with high temperature, SiO2 and antimony}
11	Spray painted flower	Monotonous work; working under impact of chemicals included in paint and dust
12	Making aluminum whitewash, degreasing and cleaning aluminum products with acids	Manual, arduous and hazardous work; working in contact with toxic chemicals
13	Cooking, washing and bleaching paper pulp by chlorine	Working in frequent contact with highly toxic chemicals in excess of permissible limits
14	Mixing and grinding glass materials	^{Arduous work; working in frequent contact with dust with high SiO}2^{concentration}
15	Firing glaze furnaces	Arduous work; static working posture; working under impact of heat and dust
16	Manually mixing glaze powder	Manual work; working in frequent contact with high-concentration toxic dust
17	Producing glue to assemble PVC products	Hazardous work; working in frequent contact with organic solvents
18	Operating PVC pipe cutting machine	Static working posture; working in frequent contact with high-concentration dust
19	Operating PVC and PE crushing, mixing, rolling and pressing machines	Hazardous work; working in frequent contact with dust and toxic gases and vapors
20	Hemming enameled cast-iron products	Monotonous work; static working posture; working in a hot place
21	Manually applying glaze	Manual and arduous work; static working posture; working in frequent contact with heat
22	Cold-rolling aluminum	Arduous work; static working posture; working under impact of loud noise
23	Heating, annealing aluminum	Arduous work; working in frequent contact with heat and dust
24	Stretching, drying leather	Arduous work; static working posture; working in frequent contact with pathogenic microorganisms
25	Vacuum-steaming leather	Arduous work; static working posture; working in frequent contact with heat
26	Grinding leather surface; slicing leather	Arduous work; static working posture; working in contact with high-concentration dust
27	Operating paper-making machines	Arduous work; static working posture; working in contact with noise and high temperature
28	Painting, printing leather; concocting chemicals to paint and print leather	Hazardous work; working in frequent contact with organic solvents
29	Applying glue on shoes soles and uppers.	Manual and extremely hazardous work; working in frequent contact with organic solvents
30	Doing industrial cleaning job at tanning facilities	Manual and arduous work; working in frequent contact with toxic chemicals and pathogenic microorganisms
31	Steaming and vulcanizing rubber shoes and slippers	Arduous work; static working posture; working in frequent contact with high temperature
32	Rolling and refining rubber in shoes production	Arduous work; working in frequent contact with high temperature, noise, dust, ^SO2 and ^H2^S
33	Sieving and drying chemicals and rubber blends	Manual and arduous work; working in frequent contact with toxic chemicals
34	Conducting chemical tests to analyze quality of chemicals and products used in paper production	^{Working in frequent contact with various types of toxic chemicals such as HCl, H}2^SO4^{, HNO}3^{, HF, CH}3^{COOH, etc.}
35	Preserving wooden rafts on rivers	Manual and arduous work; working outdoor and under impact of pathogenic microorganisms
36	Preserving, steeping, and retrieving timber in lakes	Manual and arduous work; working in contact with dirty water containing pathogenic microorganisms
37	Operating sawing machines to produce matches	Arduous work; working in confined and wet space, and under impact of loud noise
38	Cleaning steeped timber	Manual and arduous work; working in confined and wet space; static working posture.
39	Operating machines to plane, chop, dry, sieve, and select matches	Working in frequent contact with noise and high-concentration dust
40	Concocting acids, H₃PO₄ for steeping and coating matches	Static working posture; working in frequent contact with toxic chemicals
41	Operating machines to stir chemicals and dip match tips into chemicals	Arduous work; working in frequent contact with noise and toxic chemicals
42	Operating machines arrange wooden matches	Working under impact of loud noise and dust in excess of permissible limits.
43	Drying matches	Semi-manual and arduous work; working in a hot and hazardous place
44	^{Operating KCl}2^O3 grinding and crushing machine	Working in contact with flammable and explosive chemicals, noise and dust.
45	^{Refining KCl}2^O3	Working in frequent contact with flammable and explosive chemicals, noise and dust.
46	Operating match coating machines	Semi-manual and monotonous work; working in contact with toxic chemicals

X. LEATHER AND FOOTWEAR, AND TEXTILE AND GARMENT

No.	Occupation or work	Working conditions
	Class-IV working conditions
1	Blowing formaldehyde into paint-spayed leather	Working in a sealed chamber, exposed to high-concentration chemicals
2	Tanning by tannin and chrome	Manual and arduous work, dirty and smelly workplace with bacteria, fungi and toxic chemicals (chrome)
3	Preserving, processing and cutting fresh animal skins	Manual and arduous work; working in a confined, wet, dirty and smelly space with high concentration of bacteria and fungi
4	Gluing leather with alcohol to make yokes, belts	Manual work, usually exposed to toxic chemicals beyond permissible limits
5	Spinning machine operator	Constantly moving, working under impact of dust, heat and noise
6	Shuttle loom operator	Constantly moving, working under impact of cotton dust, heat and noise
7	Spinning preparation machine/combing machine operator	Arduous work; working under impact of heat and noise
8	Fiber line operator	Standing and moving during the shift, working under impact of heat, dust and noise
9	Cleaning combing machine, fiber, weaving and dying lines	Manual work; static working posture; working under impact of heat, dust and lubricants
10	Feeding thread to spinning machine/twisting machine	Constantly moving; monotonous and fast-paced work; working under impact of noise and dust
11	Dresser sizer operator	Arduous and dangerous work; working under impact of heat and noise
12	Shuttleless loom operator	Static working posture; working under impact of heat, noise and dust
13	Stenter/ fabric stentering and rolling machine operator	Arduous work; static working posture; working under the impact of heat, noise and toxic chemicals.
14	Operator of NaOH, Cl2-singeing, steaming and bleaching machine	Arduous work; static working posture; working under impact of chemicals.
15	Transporting cotton bales, fabric bales, fiber/cloth rolls, chemicals and dyes.	Manual and extremely arduous work; working under impact of dust and toxic chemicals
16	Combined washing and dyeing machine operator	Working under impact of heat, noise and toxic chemicals
17	Operator of roller printing machine/screen printing machine	Working under impact of heat, noise and toxic chemicals
18	Raising machine operator.	Static working posture; working under impact of heat, noise and high concentration of dust
19	Dyeing and steaming wool and synthetic fibers.	Working under impact of heat and bleaching and dyeing chemicals
20	Hand wool weaving	Arduous and monotonous work; static working posture; working under impact of dust.
21	Washing, bleaching and grinding jeans	Working under impact of heat, dust and toxic chemicals
22	Industrial sewing machine operator	Static working posture; monotonous, optical strain and stressful work.
23	Repairing spinning, weaving and dyeing machines at workshop.	Static working posture; exposed to lubricants; working under impact of heat, noise, dust and toxic chemicals
24	Needle lead casting	Static working posture; working under impact of heat and lead vapor
25	Grinding paper cones.	Static working posture; working under impact of noise and high concentration of dust
26	Operating and feeding cotton seed separator, cotton ginning machine	Static working posture; working under impact of noise and cotton dust in excess of permissible limits.
27	Manually packaging seeds	Arduous work; working under impact of cotton dust, heat and noise
28	Cotton baling press machine operator	Standing and constantly moving during the shift; working under impact of cotton dust and noise in excess of permissible limits.
29	Taking cotton returned from fiber/weaving lines.	Arduous work; working under impact of cotton dust and noise in excess of permissible limits.
30	Operating quilling machine, loading and removing quills	Standing and constantly moving during the shift; monotonous and fast-paced work; working under impact of cotton dust, heat and noise in excess of permissible limits
31	Loom/warping machine operator	Monotonous work with high visual concentration; working under impact of cotton dust, heat and noise.
32	Twisting	Working under impact of cotton dust and noise
33	Trimming and repairing wool carpets	Meticulous work with high visual concentration; working under impact of dust.
34	Operator of winding and spinning machine	Standing and constantly moving; working under impact of cotton dust and noise
35	Feeding carding machine	Constantly moving during the shift; monotonous and fast-paced work; working under impact of cotton dust, heat and noise
36	Taking yarn of winding machine.	Standing and moving during the shift, working under impact of cotton dust, heat and noise
37	Air jet loom/liquid jet loom operator	Standing and constantly moving; static working posture; working under impact of cotton dust and heat
38	Rib circular knitting machine operator	Static working posture; working under impact of cotton dust and heat
39	Connecting and removing loom rollers.	Standing and moving during the shift; working under impact of cotton dust, heat and noise
40	Operator of warping machine, sizing machine of a weaving line	Arduous work; working under impact of cotton dust, heat and noise
41	Drawing in weaving line.	Manual, monotonous and optical strain work; working under impact of cotton dust and heat.
42	Pouring oil into loom, twisting machine, sizing machine	Manual work; static working posture; exposed to lubricants; working under impact of cotton dust, heat and noise
43	Gelatinizing in weaving line/dyeing line	Arduous work; working under impact of heat, noise, wet and chemical vapor
44	Operator of sanfor in dyeing line.	Working under impact of high temperature and chemical vapor
45	Operator of lustre finishing machine in dyeing line	Arduous work; static working posture; working under impact of heat and dyeing chemicals.
46	Making pattern rollers in dying process	Static working posture; working under impact of chemical vapor and dust
47	Making buttonholes and buttons in industrial garment industry	Monotonous, optical strain and stressful work; working under impact of heat and dust
48	Operator of form finisher in sewing line	Standing and moving during the shift, working under impact of heat and wet
49	Cutting fabric in sewing technology.	Standing during the shift; optical strain and stressful work; working under impact of heat and cotton dust
50	Transporting fabric and fiber in raw material warehouse, product warehouse and between stages of fiber, weaving, dyeing and sewing lines.	Manual and arduous work; standing and moving during the shift; working under impact of cotton dust, heat and noise
51	Inspecting folds in weaving and sewing lines.	Monotonous and optical strain work; standing during the shift; working under impact of heat, dust and chemical smell
52	Baling in weaving and sewing lines	Arduous work; static working posture; working under impact of cotton dust, heat and noise
53	Industrial cleaning in fiber, weaving, dyeing and sewing factories Cleaning floors of dye-house and printing factory	Manual work; static working posture; working under impact of noise, heat, cotton dust, lubricants, detergents and industrial waste.
54	Grinding and maintaining quiller (rubber); replacing, removing and glueing leather	Working under impact of rubber dust, solvents and toxic chemicals
55	Repairing electrical systems in the dyeing line	Static working posture; working in wet and hot space; contacting with ^NH3^{, bleaching and dyeing chemicals}
56	Repairing and manufacturing loom comb	Working under impact of rust dust, hot asphalt vapor, glue and chemicals
57	Testing and analyzing chemicals and dyes	Regularly exposed to toxic chemicals; high temperature and humidity
58	Operating conditioning system	Arduous work; working under impact of high concentration of cotton dust and noise

XI. AGRICULTURE AND FORESTRY (INCLUDING CULTIVATION, HARVESTING AND PROCESSING OF AGRICULTURAL AND FOREST PRODUCTS, ANIMAL HUSBANDRY - LIVESTOCK AND POULTRY PROCESSING)

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Bottling and packaging pesticides	Working in frequent contact with various types of toxic chemicals such as Wofatox, Bassa, acetone and ethers
2	Transporting and stevedoring pesticides	Manual and arduous work; working in contact with toxic chemicals such as Wofatox, Bi 58, Bassa, acetone and ethers, etc.
3	Feeding leather into machines	Arduous work; working in frequent contact with dust containing pathogenic fungi and microorganisms
4	Spraying pesticides	Working outdoor; arduous and hazardous work; working in contact with pesticides in excess of permissible limits
5	Caring breeding horses.	Dangerous and arduous work; working in frequent contact with feces, garbage and pathogenic microorganisms.
6	Mechanically logging timber.	Working outdoor; arduous and dangerous work; working under impact of dust, noise and tremor.
7	Manually logging (timber, rattan, bamboo and Neohouzeaua)	Working outdoor; manual, extremely arduous and dangerous work;
8	Manually sawing timber in forests.	Working outdoor; manual and extremely arduous work; static working posture
9	Manually collecting and handling timber	Working outdoor; manual, extremely arduous and dangerous work;
10	Transporting timber by elephants and buffalos	Working outdoor in mountainous areas and slopes; extremely arduous and dangerous work.
11	Building and sailing timber rafts on rivers and streams	Working outdoor on rivers and streams; manual, arduous and extremely dangerous work.
12	Making phenolic adhesive and urea formaldehyde glue	Working under impact of heat and toxic chemicals
13	Producing chemicals for controlling termites and woodworms	Manual work; working in contact with toxic chemicals such as DDT, arsenic, etc.
14	Dipping timber into chemicals to prevent termites and woodworms	Manual and arduous work; working under impact of toxic chemicals such as arsenic, DDT, 666, formaldehyde, etc.
15	Drivers of specialized trucks with a load of 10 tonnes or more to transport timber from yard I to yard II	Arduous and dangerous work; working under impact of dust, noise and tremor.
16	Pine resin extraction.	Manual, outdoor, extremely arduous and dangerous work.
17	Performing planning investigation in highlands, forests, and on islands	Frequently travelling on difficult terrains; arduous and dangerous work.
18	Performing manual drilling to explore groundwater	Manual and arduous work; static working posture; working in dirty and muddy space. Travelling in forest, mountainous and island areas.
19	Performing surveys and exploration geophysics to extract groundwater	Arduous and dangerous work; travelling in forest, mountainous and island areas.
20	Building and paving irrigation works (including making stone dragons)	Outdoor, manual and arduous work; static working posture; dangerous work; working under impact of lime dust, cement, sand, etc.
21	Directly examining and inspecting imported coffee and agricultural products in mountainous areas and on ships.	A lot of travel; stressful work; working under impact of extreme climate and regional changes in climate; working under impact of heat, dust, noise and pathogenic fungi and microorganisms
22	Trying and tasting to inspect quality of exported coffee and agricultural products from 400 cups/day or more	Affected by a high content of caffeine and impurities included in coffee such as pathogenic fungi and microorganisms.
23	Carrying out plant quarantine and disinfecting imported agricultural and forest products on ships, barges and silos	Arduous and dangerous work; climbing and carrying heavy objects under impact of waves and wind, and in direct contact with disinfectants such as ^PH3^{, CH}3^{Br; working outdoor or in holds of ships at confined space lacking light and oxygen; static working posture}
24	Working in cold fermentation cellars	^{Working under impact of low temperature, humidity, NH}3^{and CO}2
25	Removing rust by sandblasting for galvanizing	Arduous work; working under impact of dust, tremor and noise during the shift
	Class-IV working conditions
1	Carrying out plant quarantine and disinfection	^{-Arduous and hazardous work; working under impact of toxic chemicals such as PH}3^{, BrCH}3
2	Inspecting chemical residues in foods, vegetables, fruits, and quality of pesticides	Working in frequent contact with toxic chemicals such as arsenic, toluene, acetone, ethers, Bi58, etc...
3	Delivering pesticides on seagoing ships, river ships and at ports	Working under impact of waves and toxic chemicals such as acetone, ethers, Wofatox, Bi58
4	Keeping pesticide warehouses	-Working at a poorly-ventilated place and under impact of toxic chemicals such as Wofatox, Bi58, Bassa, acetone, ethers, etc.
5	Operating machines to produce plastic packages (semi-manually)	Arduous work; working under impact of toxic vapors and noise during the shift
6	Keeping chemical fertilizer warehouses	^{Working in confined and poorly-ventilated space, and under impact of CO}2^{, NH}3
7	Unloading and transporting chemical fertilizers	^{Manual and arduous work; working in contact with CO}2^{, NH}3^.
8	Manual processing of microbial fertilizers	Manual, arduous and dirty work; working under impact of dust.
9	Caring breeding cattle	Working in frequent contact with feces, garbage and pathogenic microorganisms
10	Operating cattle feed grinders and mixers	Arduous work; working under impact of noise and high-concentration dust
11	Breeding laboratory animals, handling disease samples and laboratory equipment	Working in frequent contact with sources of pathogenic microorganisms and toxic chemicals such as formaldehyde, NaOH, HCl.
12	Doing research, diagnosis, pathological anatomy and microbiological testing for livestock and poultry.	Working in frequent contact with sources of pathogenic microorganisms and toxic chemicals such as formaldehyde, ^CO2^{, ethers and phenic acid.}
13	Testing for production of vaccines and veterinary drugs	Working in frequent contact with pathogenic bacteria and toxic chemicals such as ethers, acetone and HCl.
14	Doing research on genetic engineering experiments and plant cells	Working in frequent contact with mutagens such as Cochandin, IAA.
15	Preliminarily processing leather	Arduous work; working in contact with dust containing pathogenic fungi and microorganisms
16	Slaughtering pigs	Working at night; arduous work; wet workplace
17	Collecting, classifying and transporting animal bones	Arduous work; working at a dirty and smelly place, and in contact with pathogenic fungi and bacteria, and ^H2^S
18	Processing animal bones	Arduous work; working at a dirty and smelly place, and in contact with dust, noise and ^H2^S
19	Carrying and die casting molds in cold storage	Arduous work; working at a very cold and loud noise place; frequently working at night
20	Packing meat in cold storage	Working at a very cold place; arduous and monotonous work; working under impact of loud noise and at night
21	Operating and repairing air conditioners and refrigeration systems	^{Working in confined and cold space, and under impact of loud noise and NH}3^.
22	Driving agricultural equipment	Static working posture; working under impact of dust, noise and tremor.
23	Reclaiming, soil working, planting and caring forest trees and industrial crops	Outdoor, manual and arduous work; static working posture; working under impact of dust and pathogenic microorganisms
24	Patrolling and protecting unharvested agricultural and forest products.	Working outdoor; moving during the shift, regardless of day or night and weather; working in contact with pathogenic microorganisms.
25	Harvesting agricultural and forest products.	Working outdoor; manual and arduous work; static working posture.
26	Processing green tea and black tea.	Arduous work; working under impact of heat, dust and noise.
27	Weighing, mixing and packing tea.	Arduous work; working under impact of heat, dust and noise.
27	Producing tea flavorings.	Working under impact of heat, dust, CO, CO₂ and substances which stimulate mucous membrane in eyes, ears, nose and throat.
29	Manually feeding materials into husking machine	Manual and arduous work; working under impact of noise and very high-concentration dust
30	Transporting and handling rice and wheat flour in factories	Manual and arduous work; working under impact of dust and noise.
31	Removing impurities in husking materials	Working under impact of tremor, noise, dust
32	Warming wheat.	Arduous work; static working posture; working under impact of noise and ^CO2^.
33	Grinding wheat into flour.	Working under impact of tremor, noise and dust.
34	Husking and polishing rice for export.	Working under impact of loud noise, dust; requiring intense concentration; stressful work.
35	Sieving, classifying and colour sorting rice.	Working under impact of tremor, loud noise and dust.
36	Producing glucose	Working at a wet place and under impact of heat, dust, loud noise and chemicals.
37	Washing sugar containers.	Outdoor and manual work; static working posture; working in contact with lubricant detergents.
38	Transporting, loading/unloading and peeling sugarcane	Working outdoor; manual and arduous work; working in contact with dirt and dust
39	Operating tower cranes in sugarcane mills	Working at height and in confined space; static working posture; working under impact of noise
40	Operating sugarcane shredding and squeezing system	Working under impact of heat and loud noise
41	Pumping, weighing sugarcane juice, molasses and neutralizing, evaporating	Working in confined and wet space; static working posture; working under impact of noise and high temperature.
42	Operating sugar boiling and crystallizing system.	Working under impact of noise and high temperature; stressful work.
43	Press filtering, pocket filtering and centrifuging cane sugar.	Arduous work; static working posture; working under impact of heat and noise.
44	Sulfur fumigation.	Working in confined space; working under impact of toxic gases and heat.
45	Operating boilers and turbines generating electrical energy in sugarcane mills.	^{Working under impact of high temperature, noise, dust and CO}2^.
46	Breeding and caring pigs.	Manual and arduous work; working at wet and smelly space, and in contact with pathogenic fungi and microorganisms
47	Caring, monitoring physiological and psychological features of breeding horses, and performing artificial insemination in horses.	Arduous and stressful work; working in contact with animal wastes and pathogenic microorganisms
48	Hatching poultry eggs, and selecting breeding pairs.	Working in confined and stuffy space; static working posture; working under impact of heat, dust, and in contact with pathogenic fungi and microorganisms
49	Caring, breeding and cleaning poultry breeder farms	Working in dusty, dirty and smelly work; arduous work; working in contact with pathogenic fungi and microorganisms.
50	Performing investigations serving forest planning.	Working outdoor; frequently travelling in complex terrains and slopes; working in contact with pathogenic pests, insects and microorganisms
51	Investigating and collecting forest fruits and branches for seeding	Working outdoor; arduous and dangerous work; static working posture
52	Forest rangers directly managing and protecting forests	Working outdoor; arduous and dangerous work; performing complicated works; working in contact with pathogenic pests, insects and microorganisms
53	Preventing and controlling forest fires.	Manual, arduous and extremely dangerous work; working in contact with heat and ^CO2^.
54	Transporting timber by cables and winches to timber yard I.	Working outdoor; arduous and potentially dangerous work; working in contact with pathogenic pests, insects and microorganisms
55	Producing chipboards and fiberboards	Arduous and hazardous work; working under impact of noise, dust, heat and toxic chemicals
56	Manually drying, boiling and preserving timber	Manual and arduous work; working under impact of high temperature
57	Semi-manually producing bamboo woven fly.	Manual and arduous work; working in contact with heat and toxic gases (formaldehyde, phenol).
58	Harvesting lac	Working outdoor; arduous and dangerous work; working in contact with pathogenic pests, insects and microorganisms
59	Processing pine resin; processing lac	Working under impact of high temperature and toxic chemicals
60	Woodworking machine operators	Arduous work; working under impact of dust and noise
61	Breeding forest animals in national parks.	Outdoor, arduous work; working in frequent contact with animal wastes and pathogenic microorganisms
62	Producing microbial pesticides	Working under impact of noise, dust, toxic chemicals and pathogenic microorganisms
63	Drivers of specialized trucks with a load less than 10T tonnes to transport timber from yard I to yard II.	Dangerous work; working under impact of noise, tremor and dust.
64	Performing planning investigation in highlands, forests, and on islands	Frequently travelling on difficult terrains; arduous and dangerous work.
65	Preparing coffee (drying, husking, sieving, polishing, bagging).	Arduous work; working under impact of heat, dust and noise.
66	Roasting and crushing coffee.	Arduous work; working under impact of heat and coffee dust (which stimulate the nerves).
67	Dissolving lime during carbonization (in the production of cane sugar)	Manual and arduous work; working in contact with lime dust and slaked lime (which corrode hand skin).
68	Manually producing seasoning powder	Arduous work; working under impact of heat, CO, salt, pepper, onion, garlic (which stimulate mucous membrane in the respiratory tract).
69	Doing industrial cleaning job in processing facilities	Manual and arduous work; working in contact with wastes
70	Multiplying, preserving silkworm eggs in cold storage	Working in cold environment, and in frequent contact with moth pollen, formaldehyde and HCl.
71	Raising silkworm	Manual work; working in contact with silkworm excreta, formaldehyde, Bi58, CaCl2 (used for treating silkworm’s diseases).
72	Treating silk thread	Working in frequent contact with heat, high humidity, and the stink of silkworm caterpillars; the hands are in contact with water that has decomposed protein which causes allergy and optical strain.
73	Softening silk thread and silk.	Working under impact of dust and toxic chemicals; optical strain.
74	Printing, bleaching, dying, and finishing silk.	Arduous work; working in frequently contact with heat, dyes, NaOH, oil (used to soften silk thread).
75	Treating silk waste	Manual work; working in frequent contact with dust of waste, dyes, and the stink of decomposed protein.
76	Doing industrial cleaning job in silk thread treating, silk weaving, and dying factories	Manual work; working in frequent contact with chemicals and industrial waste
77	Testing pesticides	Working in dangerous environment; in frequent contact with toxic chemicals such as arsenic, toluene, acetone, Bi58, esters.
78	Investigating plant protection.	Working on the fields, in contact with pesticides.
79	Testing, classifying, and preserving seeds in closed rooms.	^{Working under}impact of heat and moisture, HCl, H2SO4, zinc dithiocarbonate, cacbary, vectroon
80	Operating cashew nut sieving machines	Arduous work; working under impact of dust and loud noise
81	Operating cashew nut roasting machines	Arduous work; working in frequent contact with heat and oil.
82	Manually peeling cashew nuts	Manual work; static working posture; working under impact of dust
83	Treating sewage with microorganisms in rubber latex processing factories.	Outdoor work; immersing and soaking in dirty water; working in contact with toxic chemicals
84	Operating PP and PE organic bag printers	Working in contact with solvents
85	Operating drillers to explore and extract groundwater (including drivers)	Frequently working in forest and mountainous areas and islands lacking fresh water; arduous and dangerous work; working under impact of violent tremor; static working posture; dirty workplace.
86	Building water pipelines and tanks in highland areas.	Arduous and dangerous work; working in mountainous areas and islands.
87	Breeding goats and rabbits	Manual work; working at wet and smelly space, and in frequent contact with pathogenic fungi and microorganisms
88	Analyzing, inspecting, processing and storing documents relating inspection of imported/exported coffee and agricultural products on computers.	Requiring prompt actions; stressful work; ensuring goods delivery progress at ports; in frequently contact with screens and under impact of electromagnetic field.
89	Analyzing and inspecting quality of imported/exported coffee and agricultural products in laboratories	Working in frequent contact with toxic substances and organic solvents such as hexane, toluene, ethyl ester, petrol ester, etc. to analyze toxins (carcinogenic fungi); determining pests and insects.
90	Performing plant quarantine and disinfect imported/exported coffee and agricultural products at warehouses, containers and on trucks	Arduous work; working under impact of disinfectants such as ^PH3, ^CH3^{Br, CO}2^{, DDVP. Working in confined space lacking light and oxygen.}
91	Refining and laminating rubber to make tires of agricultural vehicles	Dangerous work; working in frequent contact with high-concentration chemicals, heat and dust
92	Performing specialized inspection of pesticides	A lot of travel; working in contact with toxic chemicals such as Wofatox, Bi 58, Bassa, acetone and ethers.
93	Using and preserving termite control chemicals.	Working in frequent contact with toxic chemicals.

XII. COMMERCE

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Measuring, calculating, preserving and delivering gasoline/ oil in caverns/tunnels	Working in confined space lacking light and oxygen, and under impact of gasoline and oil in excess of permissible limits
2	Operating gasoline/oil pumps in caverns/tunnels	Working in confined space lacking light and oxygen, and under impact of loud noise and gasoline and oil vapors
3	Installing and repairing gasoline/oil equipment and tanks in caverns/tunnels	Working in confined space lacking light and oxygen; static working posture; working under impact of noise, gasoline and oil
4	Manually regenerating and preparing oil	Arduous and hazardous work; working under impact of gasoline, oil and toxic chemicals
5	Officers and crew members of tankers at sea	Working under impact of waves, noise, tremor and gasoline/oil
6	Transferring gasoline/oil at sea.	Working under impact of waves, loud noise, tremor and gasoline/oil vapors in excess of permissible limits
7	Washing, cleaning, welding, removing rust and paint from large gasoline/oil storage tanks.	Working in closed tank; static working posture; working under impact of gasoline, oil, heat, noise, dust and chemicals in paint
8	Operating gasoline/oil pumps with pressure of 50kg/cm2 or higher	Working under impact of loud noise, tremor and very high-concentration gasoline/oil
9	^{Pumping, filling and bottling H}2^SO4^{, HCl}	Arduous work; static working posture; working under impact of highly toxic and dangerous chemicals.
10	Inspecting quality of crude oil on oil rigs	Working offshore, and under impact of waves, wind, extreme weather; climbing; arduous and dangerous work.
11	Operating LPG cylinder painting, maintenance and inspection system	Hot workplace; facing high risk of fire and explosion; working under impact of thermal radiation, noise and dust; static working posture; carrying heavy objects during the shift
	Class-IV working conditions
1	Delivering, wholesaling and retailing gasoline, oil, asphalt, and petrochemical products at stores, warehouses, stations and on rivers	Hazardous work; working in frequent contact with gasoline, oil and petrochemical products.
2	Officers and crew members on barges and vessels carrying gasoline and oil on rivers	A lot of travel; working under impact of noise and gasoline, oil.
3	Operating gasoline/oil pumps with pressure of under 50kg/cm2	Working under impact of noise and gasoline, oil vapors
4	Protecting gasoline/oil warehouses and pipelines	A lot of travel; working under impact of gasoline, oil vapors.
5	Washing, cleaning, welding and molding gasoline and oil drums	Manual and arduous work; working under direct impact of gasoline, oil.
6	Measuring and calculating gasoline/oil on large tanks	Working under impact of gasoline, oil vapors in excess of permissible limits; static working posture.
7	Doing industrial cleaning job at gasoline/oil warehouses	Manual and arduous work; working under direct impact of gasoline, oil.
8	Blending gasoline/oil at large warehouses	Arduous work; working under impact of gasoline, oil
9	Producing gasoline/oil drums and tanks of various types	Arduous work; static working posture; working under impact of loud noise
10	Drivers and driver assistants of trucks carrying gasoline, oil, asphalt and petrochemical products	Dangerous work; working under impact of noise, tremor, gasoline and oil.
11	Driving forklift trucks in gasoline, oil and petrochemical product warehouses	Working under impact of gasoline, oil and petrochemical products during the shift
12	Analyzing gasoline, oil and petrochemical products.	Working in frequent contact with gasoline, oil and toxic chemicals
13	Repairing gasoline, oil pipelines	Working outdoor and in frequent contact with gasoline, oil; arduous work.
14	Repairing equipment in petroleum industry; repairing trucks, ships and barges carrying gasoline, oil and petrochemical products.	Static working posture; working in contact with grease, oil and under impact of noise
15	Operating ventilation systems in caverns/tunnels.	Working under impact of noise and gasoline, oil vapors
16	Operating oil blenders and asphalt transportable boilers	Working under impact of heat, noise, oil vapor and organic solvents
17	Wholesaling and retailing cement	Arduous work; working under impact of cement dust in excess of permissible limits.
18	Keeping toxic chemical warehouses	Working in closed warehouses and under impact of toxic chemicals.
19	Retailing and packing toxic chemicals.	Working in confined space and under impact of toxic chemicals
20	Drivers of specialized vehicles carrying chemicals.	Working under impact of noise, tremor and toxic and dangerous chemicals
21	Analyzing and inspecting quality of chemicals.	Working in frequent contact with toxic chemicals.
22	Inspecting ships before demolition or repairing	Working in holds of ships (20-30m in depth); hazardous and dangerous workplace lacking oxygen.
23	Inspecting complete equipment construction works	A lot of travel; working outdoor and under impact of heat, wind and dust
24	Inspecting imported/exported goods at warehouses and holds	A lot of travel; working outdoor and under impact of dust, heat and cold (cold storage).
25	Analyzing and testing quality of imported/exported goods in laboratories	Working in frequent contact with toxic chemicals.
26	Disinfecting, fumigating and irradiating imported/exported goods	^{Working in direct contact with disinfectants such as PH}3^{, CH}3^{Br, DDVP. Working in confined space lacking light and oxygen.}
27	Filling LPG cylinders	Arduous and dangerous work; facing high risk of fire and explosion
28	Installing, maintaining and repairing equipment and technological systems used in storage, transport, preservation and filling of LPG	Working outdoor and in direct contact with LPG vapor posing high risk of fire and explosion
29	Protecting, patrolling and performing fire prevention tasks at LPG storage, preservation and filling facilities	Working at a dangerous place posing high risk of fire and explosion; frequently working outdoor and under impact of temperature and thermal radiation; stressful work.
30	Warehouse keepers at LPG storage, preservation and filling facilities	Frequently working outdoor; working at a dangerous place posing high risk of fire and explosion; working under impact of temperature and thermal radiation; stressful work.
31	Drivers and driver assistants of trucks transporting LPG tanks, empty and filled LPG cylinders	Arduous work; facing high risk of fire and explosion; working under impact of tremor and noise; dangerous and stressful work.
32	Driving forklift trucks at LPG storage, preservation and filling facilities	Frequently working outdoor; working at a dangerous place posing high risk of fire and explosion; working under impact of temperature and thermal radiation.
33	Selling LPG cylinders	Arduous work; a lot of travel; stressful work; working under impact of temperature and thermal radiation
34	Driving fire engines in gasoline and oil warehouses	Dangerous workplace; stressful work; working under impact of noise and gasoline, oil vapors
35	Protecting gasoline/oil warehouses and pipelines	A lot of travel; working under impact of gasoline, oil vapors.
36	Drivers and driver assistants of trucks carrying gasoline, oil, asphalt and petrochemical products	Working under impact of gasoline, oil and petrochemical products during the shift

XIII. BROADCASTING

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Operating, repairing and maintaining television transmitters, FM radio transmitters with total capacity of 40 KW, or higher, or those with total capacity of 20 KW, or higher, located on mountains higher than 1000 m	Frequently working with high-frequency and extremely high-frequency electromagnetic fields in excess of permissible limits Working under impact of loud noise; stressful work.
2	Operating, maintaining and repairing broadcast transmitters with total capacity of 1000KW or higher	Stressful work; working in frequent contact with high-frequency and extremely high-frequency electromagnetic fields in excess of permissible limits, and noise
3	Installing, maintaining and repairing radio/television antenna masts with a height of at least 100m.	Outdoor, manual, extremely arduous and dangerous work; static working posture; working under impact of electromagnetic field
	Class-V working conditions
1	Installing, maintaining and repairing radio/television antenna masts with a height of from 30m to under 100m.	Outdoor, manual, arduous and dangerous work; static working posture; working under impact of electromagnetic field.
2	Operating, maintaining and repairing MW, SW broadcast transmitters with total capacity of 200KW to under 1000KW	Stressful work; working under impact of electromagnetic field in excess of permissible limits and noise.
3	Operating, maintaining and repairing television transmitters, FM radio transmitters with total capacity of from 10KW to under 40KW	Stressful work; working in frequent contact with high-frequency and extremely high-frequency electromagnetic fields in excess of permissible limits.
	Class-IV working conditions
1	Operating, maintaining and repairing MW, SW broadcast transmitters with total capacity of from 2 KW to under 200KW	Working in frequent contact with electromagnetic field and loud noise.
2	Operating, maintaining and repairing television transmitters, FM radio transmitters with total capacity of from 500W to under 10KW, and satellite communication equipment.	Working in frequently contact with electromagnetic field in excess of permissible limits, and under impact of noise; stressful work.
3	Operating, maintaining and repairing microwave television/radio transmitters at stations located in mountainous or border regions, on islands, or in underground tunnels.	Solving works in complicated conditions; working under frequent impact of electromagnetic field.
4	Installing, repairing and maintaining television, radio and microwave transmitters	Arduous work; working under impact of noise and electromagnetic field.
5	Installing, repairing and maintaining radio/television antenna masts with a height of less than 30m	Manual, arduous and dangerous work; working under impact of rain, sunshine, wind and electromagnetic field.
6	Operating, repairing and maintaining equipment used in production of radio/television programs.	Stressful work; working under impact of noise and electromagnetic field.
7	Managing tapes containing broadcasting programs	Working in closed rooms lacking oxygen and under impact of chemicals used for preserving tapes
8	Operating, repairing and maintaining equipment of news centers, managing and inspecting broadcasting waves	Optical strain; auditory stress; working under impact of noise and electromagnetic field.
9	Operating, repairing and maintaining central air conditioners with a capacity of 10.000 BTU or more.	Working in frequent contact with noise, toxic gases and vapors, oil and grease.
10	Operating, repairing and maintaining the power supply grids for radio stations, television stations and broadcasting program production centers	Working in multiple locations; static working posture; working under impact of noise and electromagnetic field
11	Protecting feed lines and antenna yards at broadcasting stations with total capacity of 100 KW or higher	Working outdoor; a lot of travel; working under impact of electromagnetic field in excess of permissible limits
12	Newsreaders	Stressful work; working in closed room lacking oxygen and under impact of high-intensity light and electromagnetic field.

XIV. NATIONAL RESERVES

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Spraying chemicals for preventing and controlling pests in reserve storage areas	Static working posture; working under impact of strong chemicals such as malathion, aluminium phosphate, etc.
	Class-IV working conditions
1	Keeping and storing food reserves.	Working in confined, hot and poorly-ventilated space; static working posture; working under impact of dust and toxic chemicals used for controlling termites and woodworms.
2	Keeping and storing reserves of tyres and inner tubes	Arduous work; static working posture; working at a poorly ventilated place lacking light, and under impact of dust (talcum powder)
3	Keeping and storing reserves of motorbikes and metallic equipment	Arduous work; static working posture; working in frequent contact with grease, oil, gasoline, etc.
4	Keeping and storing salvage and rescue equipment and supplies	Arduous work; static working posture; working at a poorly ventilated place lacking light, and under impact of dust (talcum powder), and in contact with grease, oil and gasoline, etc.

XV. HEALTHCARE AND PHARMACY

No.	Occupation or work	Working conditions
Class-VI working conditions
1	Directly examining, treating and serving people infected with HIV, AIDS.	Extremely arduous work; facing high risk of being infected with incurable diseases; stressful work.
2	Performing macroscopic anatomy, shrouding, embalming, post-mortem examination and morgue cleaning.	Working in frequent contact with dead bodies, harmful bacteria and toxic chemicals; stressful work. Working in frequent contact with smelly and infected viscera, and toxic chemicals.
	Class-V working conditions
1	Performing microscopic anatomy and forensic toxicology testing.	Working in frequent contact with smelly and infected viscera, and toxic chemicals.
2	Playing the role of operators, assistant operators, repairing and calibrating irradiation machine, X-Ray machine, MRI scanner, CT-Scanner, PET CT scanner, DSA (digital subtraction angiography) machine, C-Arm machine, linear accelerator, cobalt machine, using radium needles and other radioactive substances serving medical treatment and diagnosis.	Working in contact with ionizing radiation in excess of permissible limits, and sources of infection.
3	Repairing and calibrating surgical suction pumps	Working in frequent contact with highly infectious wastes.
4	Directly examining, treating, testing and serving patients with leprosy, mental illness, tuberculosis and other infectious diseases.	Frequently working at places posing high risk of infection; stressful work.
5	Surgeons, assistant surgeons, anesthetists, emergency and intensive care physicians; monitoring postoperative patients; directly examining, treating and serving neonatal patients.	Arduous and extremely stressful work; working regardless of time of day or night.
6	Directly examining, treating, caring and serving patients with cancer, burn, intracerebral hemorrhage, paralysis, spinal cord injury, traumatic brain injury, children with cerebral palsy, providing end-of-life care for geriatric patients, patients with dementia or stage III-IV pressure ulcers, poisoned patients, and critically ill patients in clinical departments.	Arduous and extremely stressful work; working regardless of time of day or night; frequently and continuously monitoring patients; operating and using many types of medical machines and equipment.
7	Testing for particularly dangerous diseases (cholera, bubonic plague, hepatitis, encephalitis, HIV and other rare and dangerous diseases)	Working in closed rooms, and in contact with toxic chemicals and microorganisms causing particularly dangerous diseases and posing high risk of infection
8	Killing rats, pests and pathogenic bacteria	Working in frequent contact with dangerous epidemic hotspots and highly toxic chemicals
9	Directly collecting, transporting, storing, treating and disposing of hazardous biomedical wastes and amputated body parts. Operating wastewater and waste treatment systems, and dredging sewers in hospitals.	Manual and arduous work; working in frequent contact with biomedical waste and sources of infection. Working in smelly place and under impact of noise and chemicals (such as ^{NaOH, H}2^SO4^{, H}2^{S). Unfixed work; working in contact with dirt, humidity, fungi and microorganisms.}
10	Manually washing and treating patient clothes.	Arduous and wet work; working in frequently contact with detergents and dirt posing high risk of infection.
11	Producing opium glue and derivatives of opium glue.	Arduous work; working under impact of heat, noise, herbal ingredient dust and other organic dust; stressful during the shift. Working in frequent contact with organic solvents and toxic chemicals.
12	Producing ethers.	Arduous work; working under impact of solvents and toxic chemicals.
13	Producing pharmaceutical chemical products using organic solvents.	Arduous work; working under impact of solvents and toxic chemicals during production.
14	Producing antibiotic materials.	Working under impact of chemicals, solvents and high-concentration raw-material antibiotics which likely cause allergy and adversely affect health.
15	Producing artemisinin and its derivatives	Working under impact of chemicals, solvents and high-concentration raw materials used for making anti-malarial drugs, which likely cause allergy and adversely affect health.
16	Concocting poisons in class A and B. Production and trial production of strong poisons such as morphine, synthetic camphor, terpin hydrate, strychnos nux-vomica and datura extracts, and class A poisons.	Working under impact of chemicals, solvents and high-concentration drugs and toxic chemicals which likely cause allergy and adversely affect health.
17	Grinding, sieving, concocting antibiotics, hormones, psychotropic drugs, narcotic drugs, anti-malarial medications.	Working under impact of chemicals, solvents and high-concentration raw materials which likely cause allergy and adversely affect health.
18	Producing gypsum powder (crushing rock, putting rock into oven, setting fire for oven, taking gyps out of the oven, grinding, and packacking) and producing lead molds.	Arduous and manual work; working under impact of high temperature, silica dust, ^{CO, CO}2 in excess of permissible limits
	Class-IV working conditions
1	Working at facilities providing treatment of leprosy, tuberculosis and mental illness.	Frequently working in environment posing high risk of infection.
2	Directly examining, treating and serving patients with dermatological or venereal diseases, arteriosclerosis obliterans, external haemorrhoids, genitourinary, artificial anus, and endoscopy.	Working in frequently contact with ulcers and wound odor; facing high risk of infection.
3	Performing deliveries, examination and treatment of gynecological diseases, and childbirth assistance	Arduous work; solving complicated works with high risk of infection; stressful work.
4	Printing X-ray films.	Working in closed room lacking light; optical strain; working in contact with toxic chemicals.
5	Giving massage, acupressure, therapeutic exercises, osteopathy, plaster cast. Using high-frequency machines and microwave in medical treatment.	Arduous and stressful work
6	Orderlies in health facilities.	Manual and arduous work; working in contact with wastes and pathogenic microorganisms
7	Washing, drying, sterilizing and disposing of medical devices, samples, laboratory bottles, bottles/vials containing drugs, vaccines, serum and biological preparations.	Working at a wet place and in frequent contact with chemicals and dirty wastes posing high risk of infection, NaOH, other toxic substances and sources of infection.
8	Inspecting vectors (flea, tick, aphis, mite, malaria vector mosquito, filarial nematode, hemorrhagic fever, encephalitis); performing epidemic investigation, surveillance and control.	Dangerous work; working in forest, mountainous and border areas, and on islands with high risk of infection.
9	Performing quarantine in border areas and seaports.	Working at sea, in border areas and on islands, and in contact with toxic chemicals and pathogenic microorganisms
10	Doing researches on chemicals used for killing disease vector insects	Working in frequent contact with toxic chemicals which may adversely affect human health.
11	Studying, producing and processing vaccines and serums for prevention and treatment of diseases.	Working in poorly-ventilated closed rooms, and in contact with toxic chemicals and infected cattle; facing high risk of infection.
12	Performing microbiological, biochemical and hematology tests Performing food safety and hygiene tests: testing for mycotoxins, natural toxins, pesticide residues, antibiotic residues, hormones, heavy metals, physiochemical parameters, additives and food processing aids, finding causes of food poisoning	Working in closed rooms and in contact with toxic chemicals and pathogenic microorganisms which pose high risk of infection, air compressors, noise; facing high risk of fire and explosion. Working in frequent contact with microorganism factors, natural toxins, pesticide residues, heavy metals, etc. which may adversely affect human health. Working in contact with toxic chemicals in laboratories such as acetyl nitrate, pyridine, hexane, etc. which may cause cancer or gene mutation. Working with machines, pressure and chemicals used in testing.
13	Keeping microorganism and parasite strains/species	Working in frequent contact with blood samples and infected cattle which may transmit diseases.
14	Performing works serving hemodialysis and endoscopy.	Static working posture; optical strain; working in contact with samples.
15	Directly examining, treating and serving patients at outpatient and emergency departments.	Frequently working in environments with high risk of infection; stressful work.
16	Repairing medical machines and equipment at sickrooms and laboratories.	Hard work; static working posture; working in frequent contact with grease, oil, chemicals and at places with high risk of infection.
17	Finding, exploring and harvesting herbs.	Arduous work; a lot of travel; frequently working in forest and mountainous areas.
18	Drying herbal ingredients with zinc phosphate and sulphur.	Working in frequent contact with high-concentration toxic chemicals.
19	Doing research in herbal ingredients and testing for pharmacology, chemotaxonomy, oriental medicine and pharmacokinetics in treatment of diseases.	Working in frequent contact with organic solvents, toxic chemicals and infected animals.
20	Directly dehydrating, crushing, sifting, grinding, kneading and mixing herbal ingredients manually and semi-manually in traditional medicine hospitals.	Arduous work; working under impact of heat, noise and herbal ingredient dust.
21	Producing silica gel absorbers, burettes (mother solutions) for chromatography analysis.	^{Working in frequent contact with highly toxic and dangerous concentrated acids (such as H}2^{SO4, HCl, HNO}3^...)
22	Taking samples and analyzing environmental and occupational health hazards for preventive health system and epidemic prevention.	Working under impact of workplace hazards
23	Producing absorbable sutures.	Working under impact of heat and toxic chemicals
24	Processing, blending, rolling, pressing, centrifuging, vulcanizing rubber for producing medical instruments (controlling condom/rubber glove dipping and forming machines, collecting rubber gloves, and vulcanizing rubber products)	Working in frequent contact with toxic chemicals, high temperature and stench. Working in frequent contact with heat, noise, dust and toxic chemicals.
25	Keeping and storing chemicals at packaging facilities	Physical and manual work; working in contact with heat, noise, chemical vapors, toxic herbal ingredients, and toxic chemicals.
26	Breeding laboratory animals serving medical research and vaccine production.	Working in frequent contact with animal manure and sources of infection.
27	Manually decocting.	^{Working in confined space, and under impact of heat, CO and CO}2^.
28	Producing pharmaceutical chemical products using strong inorganic acids, strong alkalis, alcohol, and pine essential oil	Working in frequent contact with organic solvents and toxic chemicals.
29	Raising snakes and extracting venom from snakes	Working in frequent contact with venomous snakes; stressful work; facing life-threatening risks.
30	Producing Chloral hydrate and cloramine.	Working in contact with vapors of disinfectants which adversely affect human health.
31	Dissolving, condensing, collecting, rinsing, drying, grinding, sieving, and packing pharmaceutical chemical products.	Arduous work; stressful during the shift. Working in frequent contact with organic solvents and toxic chemicals.
32	Extracting and refining active ingredients from herbal ingredients	Working in frequent contact with organic solvents and toxic chemicals which may adversely affect human health.
33	Stewing herbal glue and animal glue	Working according shifts, and in contact with heat, herbal vapors, and vapors of solvents used in extracting herbal ingredients and animal glue.
34	Chopping, seasoning, drying, removing molds from herbal ingredients manually	Physical and manual work; working in contact with heat, noise, chemical vapors, and herbal ingredients.
35	Grinding, sieving, mixing, and preparing active ingredients and excipients; operating tablet/blister coating and packaging machines	Physical and manual work; working in contact with heat, noise from packaging/coating machines, vapors of chemicals, herbal ingredients and excipients.
36	Producing and packing balm and ointment.	Working in frequent contact with vapors of organic solvents, chemicals and essential oil which may adversely affect human health.
37	Preparing, packing and sealing injectable drugs by vacuum-packing method; packing and sealing powdered antibiotics.	Physical and manual work; working in contact with heat, noise from stirring/sealing machines, vapors of chemicals, herbal ingredients, excipients and antibiotics.
38	Producing drugs from offal, subtilis.	Facing risk of infection with biological agents from offal; working in contact with chemicals and solvents during production.
39	Operating thermal water distillation machines	Working in frequent contact with high temperature, noise; manual and stressful work.
40	Manually soaking, rinsing and cleaning syringes.	Arduous work; static working posture; working under impact of heat
41	Extracting and experimentally producing pharmaceutical chemical products.	Working in frequent contact with vapors of solvents, chemicals and pharmaceutical chemical products which may adversely affect human health.
42	Manually loading materials, herbal ingredients, pharmaceuticals, etc. at health facilities.	Physical and manual work; working in contact with heat, noise, chemical vapors, and herbal ingredients.
43	Directly testing pharmaceutical chemical products, pharmaceutical products and cosmetics; performing physical chemistry, chemotaxonomy, oriental medicine and pharmacology analysis Testing medicines and pharmaceutical starting materials.	Stressful work; working in frequent contact with vapors of pharmaceutical products and cosmetics
44	Keeping warehouses, preserving materials and poisonous pharmaceutical ingredients of class A and B	Arduous work; working in contact with toxic chemicals, heat and dust.
45	Washing, cleaning, drying and ironing hospital bed sheets, blanket, pillow, mattress, etc.	Arduous and wet work; working in frequently contact with detergents and dirt posing high risk of infection.
46	Doing industrial cleaning job in medical equipment and pharmaceutical factories.	Arduous work; working at hazardous workplace and in frequent contact with toxic chemicals.

XVI. IRRIGATION

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Diving to survey hydraulic structures.	Arduous and dangerous work; static working posture; working under impact of high pressure.
2	Mechanical officers and mechanics on construction/special purpose vessels.	Extremely arduous work; static working posture; working under impact of heat, loud noise and violent tremor.
3	Operating track-type grab dredgers with the bucket of at least 16 m³	Extremely arduous; working under impact of dust, loud noise and violent tremor; stressful work.
	Class-V working conditions
1	Blasting for extracting and breaking rock foundations of hydraulic structures	Working outdoor; arduous and dangerous work; working under impact of dust, noise, and NO2
2	Sailors, crew members, electrical technicians and mechanics on vessels serving hydraulic structures.	A lot of travel; extremely arduous work; working under impact of heat, loud noise and tremor.
3	Operating and repairing electric pumps at pumping stations with at least 5 pumps and total output above 100.000 m³/h.	Constantly travelling; working under impact of loud noise, tremor; static working posture.
4	Operating grab dredgers	Working outdoor and on rivers; arduous work; working in contact with dust, noise, tremor, oil and grease.
5	Operating track-type grab dredgers with a capacity above 220CV	Arduous and dangerous work; working under impact of heat, noise and tremor.
6	Assembling structural components at a height.	Working outdoor; arduous, dangerous and stressful work
7	Performing investigations and surveys serving the planning for hydraulic structures.	Frequently working in remote and inaccessible areas; arduous work.
8	Drilling to handle the body and foundation of hydraulic structures.	Arduous work; static working posture; working under impact of noise, tremor and very high-concentration dust.
	Class-IV working conditions
1	Sailors, crew members and mechanics on tugboats.	Arduous work; working under impact of waves, noise and tremor.
2	Operating and repairing electric pumps with a capacity of at least 4000 m³/h	Working at wet place and under impact of heat, tremor, noise and in frequent contact with grease and oil.
3	Grouting dykes, embankments and culverts.	Working outdoor; arduous work; working under impact of noise, tremor and termite-control chemicals.
4	Manually building hydraulic structures (woodworking, bricklaying, metalworking, etc.)	Manual and arduous work; working under impact of dust and noise.
5	Dredging rivers, ditches, channels manually	Outdoor, manual and arduous work; static working posture; working under impact of pathogenic fungi and microorganisms
6	Driving heavy equipment at hydraulic structures.	Working under impact of tremor, noise and dust; stressful work.
7	Repairing heavy equipment at construction sites.	Outdoor and arduous work; static working posture; working under impact of oil and grease.
8	Closing and opening sewer hatches at irrigation dams	Working at height in any weather conditions; arduous work.
9	Testing and treating soil and concrete at irrigation construction sites.	Working outdoor; manual and arduous work; working in contact with chemicals, noise, tremor and dust.
10	Inspecting flood control systems.	Working outdoor; frequently moving, regardless of day or night.

XVII. CIPHER

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Cooking synthetic paint and adhesives for coating and sealing encoded documents.	Manual and ardous work; working under impact of heat and toxic chemicals.
2	Operating, repairing and maintaining vehicles carrying cipher machines	Working in confined space lacking oxygen, and under impact of noise and toxic gases from materials.
	Class-IV working conditions
1	Decoding.	Working in closed room lacking light and oxygen, and under impact of electromagnetic field; stressful work.
2	Doing research, experimentally producing, and testing cipher machines and generating cryptographic keys.	Working in confined space and in contact with chemicals used for cryptographic protection, and under impact of electromagnetic field; stressful work.
3	Producing printed circuit boards of cipher machines.	Working under impact of dust, noise and toxic chemicals such as HCl, cyanide, ammonia, etc.
4	Casting and removing lead and plastic letters.	Working in frequent contact with heat, lead dust, gasoline and toxic chemicals.
5	Operating typo printers, offset printers for printing encoded documents.	Working under impact of noise, dust and chemicals used for protecting encoded documents.
6	Manually packing encoded documents.	Manual and arduous work; working under impact of noise, paper dust and chemicals used for protecting encoded documents.
7	Keeping warehouses, loading/unloading, receiving, delivering cipher documents, equipment and devices.	Working in closed rooms lacking light and oxygen, and under impact of dust, chemicals used for protecting cipher documents, equipment and devices
8	Transporting top-secret and urgent encoded documents/official dispatches.	Working regardless of day or night time; a lot of travel; dangerous work; working under impact of bad weather; requiring prompt actions and confidentiality.
9	Destroying, operating machines that destroy cipher documents and equipment.	Working under impact of paper and coal dust, heat from boilers, loud noise from grinders and chemicals such as ^H2^SO4^{, NaOH... which are likely to cause}dermatological diseases and pulmonary disease.
10	Producing, assembling, repairing cipher equipment and cipher machines.	Working in closed rooms; stressful work requiring high precision; working under impact of toxic chemicals.
11	Prepressing, printing cipher documents; desktop publishing in production of printed circuit boards.	Working in closed rooms; stressful work; working under impact of engine noise and in contact with toxic chemicals.
12	Inspecting cipher documents and equipment.	Working in closed rooms lacking oxygen; stressful work requiring high precision.
13	Operating and managing electronic authentication systems; supervising cybersecurity for IT systems.	Working in closed rooms, and under impact of noise, high-level and continuous electromagnetic radiation
14	Performing mechanical/electrical repairs to ensure the production of cipher documents and equipment.	Working in closed rooms, and in frequent contact with ^H2^SO4 ^HNO3 ^{(GC400), ZC 365 phosphate solutions.}
15	Inspecting and assessing cipher products and cipher machines.	Working in closed rooms lacking oxygen, and under impact of electromagnetic field; stressful work.

XVIII. GEOLOGY

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Digging trenches, wells, and geological boreholes in radioactive mine zones.	Outdoor, manual, extremely arduous and dangerous work; static working posture; working under frequent impact of radiation.
2	Performing airborne geophysical surveys.	Extremely dangerous work; working under impact of loud noise and violent tremor.
3	Drilling in radioactive mine zones by hand or by machine	Working outdoor at a muddy place; arduous work; working under frequent impact of radiation.
	Class-V working conditions
1	Performing borehole logging	Extremely dangerous work because of exposure to high-intensity unsealed radioactive sources.
2	Making geological, hydrogeological, and geophysical maps; hydrogeological monitoring; searching for minerals in radioactive areas, highlands, border areas, or on islands	Arduous and dangerous work; a lot of travel in steep highlands; working under impact of radiation.
3	Surveying, taking ore and radioactive samples from constructions (trenches, boreholes, wells)	Working in highlands, in confined space; static working posture; working under impact of radiation.
4	Performing geophysical surveys in radiation zones.	Working outdoor in highlands; a lot of travel; working under impact of radiation.
5	Digging trenches and geological bores	Manual, arduous and dangerous work; working in confined space; static working posture.
6	Processing and analyzing radioactive ore samples	Working in frequent contact with highly toxic chemicals and radiation.
7	Taking and sifting pan-concentrate samples	Working outdoor; manual and arduous work; static working posture; a lot of travel.
8	Analyzing geological samples by Roentgen method, diffraction, isotope-ratio mass spectrometry, scanning electron microscopy of microzone.	Working under frequent impact of radiation and electromagnetic field in excess of permissible limits
9	Analyzing geological samples by inductively coupled plasma (ICP)	Working in frequent contact with electromagnetic field and strong acids such as HF, ^{HCL, H}2^SO4^{, HNO}3^.
10	Topographical and construction geodesics in highlands, border areas, and islands.	Working outdoor in rough and complex terrains; arduous work.
11	Performing geological surveys, geophysical surveys, hydrogeological surveys at sea.	Arduous work; working under impact of waves, noise and tremor.
12	Geological drilling by hand.	Manual and arduous work; static working posture; working at wet, dirty, muddy place; immersing in water throughout the shift when working under in the river or sea.
13	Occupation or work	Working conditions
	Class-IV working conditions
1	Feeding, discharging water in hydrogeological research	Working outdoor; manual and arduous work.
2	Pumping, draining water in hydrogeological boreholes.	Working outdoor; manual and arduous work.
3	Analyzing geological samples by chemical, physical, thermal, and mechanical methods	Working under impact of noise, dust, heat and toxic chemicals
4	Processing and separating geological samples.	Working under impact of noise and mineral dust.
5	Analyzing geological samples by optical emission spectrometry.	Working under impact of heat, electromagnetic field, toxic gases and vapors.
6	Analyzing gold or silver samples by heating.	Working under impact of high temperature and toxic chemicals.
7	Driving geological drilling vehicles	Dangerous work; working under impact of tremor and noise.
8	Operating geological drilling machines.	Working outdoor; arduous work; working at a muddy place; static working posture

XIX. CONSTRUCTION (INSTALLATION)

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Operating underground drilling equipment.	Working in closed cellars lacking oxygen; arduous and dangerous work; static working posture; working under frequent impact of noise, tremor and rock dust
2	Blasting underground.	Arduous and extremely dangerous work; working under impact of dust, noise and NO2.
	Class-V working conditions
1	Operating heavy equipment underground	Arduous and dangerous work; working under frequent impact of noise, tremor and dust.
2	Operating, assembling, repairing machines and equipment serving construction/installation tasks underground	Dangerous work; working in noisy and dusty environment.
3	Performing manual tasks in construction/installation underground.	Manual, arduous and dangerous work; working under impact of dust and noise.
4	Building, installing and making major repairs of high-voltage transmission lines and power poles of at least 110kV	Extremely arduous and dangerous work at a height; static working posture
5	Arc or gas welding underground	Working in confined space lacking light and oxygen; static working posture; working under impact of toxic gases.
6	Building chimneys, blast furnaces, and silos using sliding formworks and prestressing tendons.	Arduous and extremely dangerous work; working under impact of high-concentration dust
	Class-IV working conditions
1	Inspecting, supervising, and providing technical guidance underground.	Working in noisy and dusty environment.
2	Operating concrete mixers	Frequently working in noisy and dusty environment.
3	Operating mortar/cement grouting pumps	Working under impact of noise; arduous work.
4	Building, installing, repairing transmission lines and power poles below 110 kV	Arduous and dangerous work; static working posture.

XX. ENVIRONMENTAL HYGIENE

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Dredging underground sewers in urban areas	Manual and arduous work; working in smelly place lacking light and oxygen.
	Class-V working conditions
1	Burying dead bodies.	Extremely arduous, hazardous and stressful work.
2	Dredging culverts.	Working in frequent contact with dirty and smelly water; working in a place lacking light and oxygen.
3	Building, repairing underground sewers.	Arduous work; working in contact with dirty and smelly water.
4	Cleaning and improving two-compartment latrines and bucket toilets.	Arduous work; working in contact with dirty and smelly wastes.
5	Shoveling and leveling landfills.	Arduous work; frequently working in severely polluted environment.
6	Waste processing.	Frequently working in polluted environment.
7	Cutting down trees and their branches.	Working at height; manual, arduous and dangerous work.
8	Manually inspecting to detect damage to inner surfaces of sewers	Manual and arduous work; static working posture; working in direct contact with dirty and smelly substances; working in severely polluted environment lacking light and oxygen.
9	Dredging underground sewers by mechanical equipment	Manual and arduous work; static working posture; working in direct contact with dirty and smelly substances; working in severely polluted environment lacking light and oxygen.
	Class-IV working conditions
1	Cleaning animal cages.	Manual work; working at a dirty and smelly place.
2	Keeping morgues, cemeteries, crematories.	Monotonous and stressful work.
3	Maintaining, dredging canals, rivers, sewers.	Working outdoor; arduous work; working in contact with mud and dirty water.
4	Operating dredgers and sewage pumps.	Working in severely polluted environment and under impact of noise.
5	Collecting garbage at ship/bus terminals; collecting garbage on streets.	Working in frequent contact with garbage and high-concentration dust
6	Raising dangerous animals.	Arduous and dangerous work.
7	Driving and operating specialized vehicles for transporting fertilizer or garbage.	Working in environment polluted with garbage.
8	Cleaning public restrooms at ship/bus terminals; processing soil mixed with manure.	Working in a polluted environment; manual and arduous work.
9	Sucking feces and sludge.	Frequently working in smelly and dirty environment.
10	Cutting grass/brush using shoulder brush cutter at the squares of provinces/cities.	Working in contact with toxic gases and under impact of tremor.
11	Collecting garbage on and along canals	Manual and arduous work; static working posture; working in direct contact with dirt and stench; working in severely polluted environment; facing risk of accidents because of slippery workplace.
12	Dredging rivers and canals by mechanical equipment	Arduous, hazardous and dangerous work; working outdoor; static working posture; working in direct contact with sludge, dirty water, garbage containing various pathogenic fungi and microorganisms
13	Managing electronic weighing station of at least 30 tonnes at sludge yards.	Arduous work; frequently working in severely polluted environment
14	Treating sewage waste at sludge storage yards	Arduous work; working in contact with toxic chemicals and in severely polluted environment with high risk of accidents.
15	Managing, maintaining detention basins	Outdoor, manual and arduous work; static working posture; working in contact with pathogenic fungi and microorganisms
16	Treating and maintaining basin water.	Outdoor, manual and arduous work; working in contact with wastewater, chemicals; static working posture; working in contact with pathogenic fungi and microorganisms
17	Planting, maintaining and caring trees and grass	Outdoor, manual and extremely arduous work; static working posture; a lot of travel; working under impact of dust, noise, tremor, gasoline and oil vapors, toxic gases, chemicals and fertilizers; facing high risk of occupational accidents and traffic accidents.

XXI. PRODUCTION OF BRICKS, CERAMICS, STONES, SAND, GRAVEL, AND CONSTRUCTION GLASS AND MATERIALS

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Firing lime kiln, taking lime from the kiln and selecting hot lime (manual kilns).	Working with blast furnace; manual and arduous work; working under impact of heat and toxic dust.
2	Pouring and discharging cement into and from concrete mixers.	Manual and extremely arduous work; working under impact of very high-concentration cement dust
3	Cutting, grinding granite marble or stone slabs	Arduous work; working under impact of noise, tremor and dust
4	Sandblasting to blur glass	Working in dusty environment and under impact of noise and tremor.
5	Operating crushers or grinders for producing firebricks	^{Working under impact of loud noise, dust with very high concentration of SiO}2
6	Firing firebrick furnaces	Arduous work; working under impact of high temperature and dust in excess of permissible limits.
7	Loading and unloading firebrick from furnaces	Arduous work; working under impact of high temperature and dust in excess of permissible limits.
	Class-IV working conditions
1	Operating and repairing glass melting furnaces	Working under impact of dust and heat
2	Operating equipment for processing materials for glass production (breaking, grinding, crushing chamotte).	^{Working under impact of noise and dust with high concentration of SiO}2
3	Burning bricks in hoffman kilns, tunnel kilns, manual kilns.	Manual and arduous work on top of the kiln; working under impact of heat, coal dust, and CO gas.
4	Loading and unloading bricks from hoffman kilns	Manual and arduous work; working in confined space; static working posture; working under impact of heat and dust.
5	Bagging chamotte mortar, patching and changing soda bags	Manual and arduous work; working in dusty environment (^{with high concentration of SiO}2).
6	Draining, repairing boilers, oil pipes, and oil pumps from barges.	Manual and arduous work; working in confined space; static working posture; working in frequent contact with dust,^SO2 and oil.
7	Operating and repairing glass tempering kilns	Working in frequent contact with heat and noise in excess of permissible limits
8	Driving trolleys to feed materials for glass production	Manual and arduous work; working under impact of heat and dust.
9	Controlling combustion chambers of firebrick driers.	Working in hot, noisy and dusty environment.
10	Repairing, maintaining tunnel kilns.	Manual and arduous work; working in hot and confined space; static working posture.
11	Operating and repairing glass drawing machines	Working with high temperature
12	Producing asbestos axles of glass drawing machines	Working in dusty and noisy environments
13	Shaping firebricks by rammers or by hand.	Working under impact of dust, noise and tremor
14	Spraying glaze, rinsing and cleaning ceramic sanitary ware.	Manual and arduous work; working under impact of heat and dust.
15	Drying and operating FO oil pumping stations	Working in underground, hot and noisy place lacking oxygen.
16	Operating centrifuges and rammers in the production of precast concrete.	Working with noise and violent tremor.
17	Cutting, breaking, hanging, removing, grinding, and drilling glass.	Working with high temperature, noise and dust.
18	Directly working in the production line of car brake pads.	Working in a hot and noisy environment with asbestos dust.
19	Operating firebrick press machines.	^{Working in contact with high concentration of SiO}2
20	Manually breaking and selecting chamotte.	Outdoor, manual and arduous work.
21	Removing slag and classifying firebricks.	Manual, arduous and dusty works.
22	Taking bricks from tunnel kilns.	Manual, arduous and dusty work.
23	Drying, scrambling bricks in glass houses.	Manual work; a lot of travel.
24	Processing, pouring mortars for production of ceramic sanitary ware.	Working in noisy and dusty environment.
25	Making moulds of ceramic and glass products.	Manual, arduous and dusty work.
26	Breaking plaster moulds.	Manual and arduous work.
27	Moving, arranging ceramic and glass products in driers	Manual work; working in hot and dusty environment.
28	Operating asbestos crushers.	Working under impact of dust and noise in excess of permissible limits
29	Processing raw materials for producing tiles and ceramic sanitary ware.	Working in hot, noisy and dusty environment.
30	Mixing raw materials for producing marble tiles.	Working in hot, noisy and dusty environment.
31	Processing steel rebars in production of precast concrete.	Manual work; working in hot and dusty environments.
32	Melting glue; producing mastic, ojalit paper, preparing ojalit ink	Working in frequent contact with toxic chemicals.
33	Steaming concrete slabs.	Working in contact with toxic chemicals
34	Applying anti-decay chemicals.	Working in contact with toxic chemicals
35	Drying bamboo matting treated with phenolic adhesive.	Manual work; working in contact with toxic chemicals such as HCl and phenol
36	Building and mending clinker furnaces	Arduous work; working in confined space lacking oxygen, and in frequent contact with heat and dust.
37	Sampling coal.	^{Arduous work; working in frequent contact with heat, dust, CO and CO}2^.
38	Operating refractory material crushers and grinders	^{Working under frequent impact of noise and dust with very high concentration of SiO}2
39	Firing and operating refractory material furnaces	^{Arduous work; working under impact of heat and dust with very high concentration of SiO}2

XXII. TOBACCO PRODUCTION

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Manually transporting and handling tobacco	Manual and extremely arduous work; static working posture; working in frequent contact with nicotine, dust, molds and fungi.
2	Spraying menthol.	Working in closed and confined rooms, and in direct contact with high-concentration menthol and nicotine.
3	Manually transporting and handling tobacco materials.	Manual and extremely arduous work; static working posture; working in contact with nicotine, dust, pathogenic molds and fungi.
4	Performing chemical analysis and assessing quality of materials and tobacco products.	Working in frequent contact with chemicals, nicotine, tar and tobacco smoke through respiratory tract
5	Operating fermentation ovens, cigarette dryers.	Working in frequent contact with nicotine, tobacco vapors and dust, pathogenic fungi. Working under impact of high temperature.
	Class-IV working conditions
1	Inspecting tobacco quality.	Working in frequent contact with nicotine, pathogenic fungi and bacteria; static working posture.
2	Keeping tobacco warehouses; preserving tobacco leaves.	Working in closed rooms lacking oxygen, and in contact with very high-concentration nicotine; static working posture.
3	Drying, vacuum steaming, cutting tobacco stems and tips.	Working in frequent contact with nicotine and pathogenic fungi and bacteria.
4	Operating tobacco shred processing lines.	Working under impact of dust, noise and nicotine.
5	Taking, packing, moving additives and tobacco shreds in facilities.	Manual and arduous work; working in contact with nicotine and tobacco dust.
6	Operating tobacco rolling and packing machines.	Working in contact with noise, dust and nicotine.
7	Doing industrial cleaning job at workshops where tobacco is manufactured and wastes are treated	Working in frequent contact with tobacco dust and high-concentration nicotine.
8	Operating tobacco roasting stoves.	Arduous work; static working posture; working under impact of heat, tobacco dust and high-concentration nicotine.
9	Classifying, processing tobacco leaves; processing moldy tobacco leaves.	Static working posture; working in contact with fungi, bacteria and high-concentration nicotine.
10	Operating machines for shredding and sieving rotten cigarettes.	Working in confined space; static working posture; working under impact of tobacco dust and nicotine.
11	Sieving, roasting, and crushing tobacco flour.	Working under impact of very high-concentration tobacco dust and nicotine in excess of permissible limits.
12	Mixing and rolling reconstituted tobacco.	Arduous work; working under impact of nicotine and very high-concentration tobacco dust
13	Cleaning, shredding, sieving waste rolling paper.	Arduous work; working under impact of nicotine and dust.
14	Operating tobacco package and additive printing machines.	Working in frequent contact with noise and toluene.
15	Manually boiling glue for rolling paper.	Arduous work; working in contact with dust and toxic chemicals such as HCl, distrin and CO.
16	Operating ventilation systems	A lot of travel; working under impact of dust, noise and nicotine.
17	Manually stripping and humidifying tobacco.	Arduous work; static working posture; working in contact with dust, fungi and nicotine of very high concentration.
18	Operating tobacco dedusting machines.	Working in confined space and under impact of loud noise and nicotine dust in excess of permissible limits.
19	Delivering raw materials at fiber manufacturing, packing and cigarette rolling factories	A lot of travel; working under impact of dust, noise and nicotine.
20	Repairing equipment at fiber manufacturing, packing and cigarette rolling factories	Arduous work; static working posture; working under impact of noise, dust and nicotine.
21	Making flavorings used in tobacco production.	Working in frequent contact with chemicals, nicotine and substances which stimulate mucous membrane, eyes, ears, nose and throat.
22	Inspecting quality of cigarettes on technological lines.	Working in frequent contact with nicotine, fungi, tar and pathogenic bacteria; static working posture.
23	Testing quality of tobacco ingredients and cigarettes.	Organoleptically testing tobacco quality; Working in frequent contact with chemicals, nicotine, tar (tobacco residue) and tobacco smoke through respiratory tract.
24	Culturing tobacco tissues.	Working in frequent contact with detergents and chemicals used for disinfecting samples and devices, growth stimulants and mutagens; working in contact with alcohol burners in high temperature conditions.
25	Operating tobacco processing equipment and lines.	Unpleasant working posture; working under impact of noise, dust, fungi and nicotine.
26	Making mechanical and electrical repairs and maintenance of equipment in tobacco processing lines.	Arduous work; static working posture. Working under impact of noise, dust, industrial oil and grease, and nicotine.
27	Operating boilers in tobacco processing lines.	Arduous work; working under impact of noise, dust and nicotine.

XXIII. LAND SURVEY

No.	Occupation or work	Working conditions
Class-VI working conditions
1	Performing seafloor topography measurements	Extremely arduous and dangerous work. Frequently working at sea, and under impact of waves, loud noise and violent tremor.
Class-V working conditions
1	Performing basic land surveys in highlands, forests, border areas, and on islands	Extremely arduous and dangerous work; frequently working in highlands and on islands
2	Surveying and drawing maps in border areas and highlands	Extremely arduous and dangerous work; frequently working in highlands and on islands
Class-IV working conditions
1	Performing basic surveys in midland and in plain regions	Arduous work; frequently working outdoor.
2	Performing topographical land surveys.	Arduous work; static working posture; frequently working outdoor.
3	Performing cadastral measurements.	Arduous work; working outdoor; travelling all over the country.

XXIV. METEOROLOGY AND HYDROLOGY

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Performing meteorological and oceanographical monitoring in Truong Sa archipelago and Area DK I.	Working outdoor, day and night; dangerous work; working under impact of waves, wind.
	Class-V working conditions
1	Performing meteorological and oceanographical monitoring on other islands.	Working outdoor, day and night; dangerous work.
	Class-IV working conditions
1	Selecting, classifying, preserving, fixing, restoring materials in meteorological and hydrographic archives.	Working in frequent contact with CO and formaldehyde.
2	Carrying out meteorological and hydrographical surveys in mountainous areas and on islands.	Arduous and dangerous work; frequently working in mountainous and island provinces.
3	Providing instructions and inspecting meteorological and hydrographical surveys at measuring stations/points in mountainous areas and on islands	Arduous work; frequently working in forests and on islands.
4	Observing water flows and hydrographical factors at hydrological stations in mountainous areas.	Arduous and dangerous work.
5	Observing aeronautical meteorological factors in radar control rooms: Meteosit 2, AKB complex, weather radar.	Working in closed rooms lacking light; working under frequent impact of X-ray, ultra high-frequency waves, and noise
6	Carrying out chemical analysis of soil, water, air, and microorganisms.	Working in frequent contact with toxic chemicals.

XXV. SCIENCE & TECHNOLOGY

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Diving to collect oceanic samples and study underwater ecosystems.	Extremely arduous and dangerous work; working under impact of waves; static working posture.
2	Measuring radiation doses, testing environmental radiation; operating and maintaining generator Notro NA-3C and accelerator Microtron M-17	Working in frequent contact with intense radiation sources.
3	Operating and maintaining nuclear reactors (power reactors, research reactors).	Working in frequent contact with radiation sources.
4	Performing safety assurance works at nuclear reactors.	Working in frequent contact with radiation sources.
	Class-V working conditions
1	Processing, producing, measuring, and analyzing radioactive samples.	Working in contact with intense radiation sources.
2	Studying and using radiation sources in laboratories.	Working in contact with intense radiation sources.
3	Keeping and preserving sources of radioactive samples.	Working in contact with intense radiation sources.
4	Studying fabrication of inorganic materials and catalysts.	^{Working in contact with highly toxic chemicals such as H}2^SO4^{, HNO}3^{, xylene, etc.}
5	Analyzing chemical formula and structures of rare radioactive samples.	Working under impact of radioactive substances and toxic chemicals such as Hg, ^H2^SO4^{, HF, benzene, etc.}
6	Synthesizing and analyzing organic compounds.	Working in contact with chemicals and organic solvents of high concentration such as benzene, toluene, chlorine, methanol, etc.
7	Processing and making plant specimens.	Working in contact with chemicals and toxic organic solvents such as HgCl, alcohol, arsenic, formaldehyde.
8	Molecular biology and genetics technology.	Working in contact with toxic chemicals such as KCl, chloroform, tetrodotoxin, and substances that cause genetic mutation.
9	Microbial technology	^{Working in contact with toxic chemicals}such as: ^HgCl2^,chloroform, acetone, etc., substances that cause genetic mutation, and pathogenic microorganisms.
10	Animal and plant cell technology.	Working in ^{contact with chemicals and toxic organic solvents such as}benzene, toluene, chloroform, acetone, and radioactive isotopes.
11	Processing, producing, measuring, and analyzing radioactive samples.	Working in contact with intense radiation sources.
12	Studying and using radiation sources in laboratories.	Working in contact with intense radiation sources.
13	Conducting experiments in nuclear physics; conducting radiochemical experiments.	Working in frequent contact with radiation sources and toxic chemicals.
14	Radiation workers.	Working in frequent contact with radiation sources and toxic chemicals.
15	Performing ore dressing and processing radioactive ores and rare earth ores.	Frequently and directly contacting with radioactive substances (U, Th, Ra, Rn, etc.), radioactive ore dust, noise and toxic substances.
16	Adopting manufacturing technology of nuclear materials or nuclear fuel.	Frequently and directly contacting with radioactive substances (U, Th, Ra, Rn, etc.) of high intensity, noise, flammable or explosive gases and toxic chemicals.
17	Treating, storing and managing radioactive waste, used radioactive sources and nuclear fuel.	Frequently and directly contacting with radioactive substances (U, Th, Ra, Rn, etc.), radioactive ore dust, noise, flammable or explosive gases, and toxic substances.
18	Directly operating and maintaining radiation equipment; performing experiments in nuclear physics and radiation chemistry.	Working in frequent contact with radiation sources.
19	Extracting and using neutron sources of nuclear reactors.	Working in confined space; continuously working in a mixed neutron and gamma radiation environment.
20	Producing radioactive isotopes and making up radiopharmaceuticals.	Working in frequent contact with radiation sources.
21	Performing sample analysis using nuclear techniques, calibration and radioactivity.	Working in direct contact with radioactive substances.
22	Analyzing ore samples and radioactive elements adopting physical and chemical methods.	Frequently and directly contacting with radioactive substances (U, Th, Ra, Rn, etc.), radioactive ore dust, noise, flammable or explosive gases, and toxic substances.
23	Dismantling nuclear facilities, nuclear equipment, managing radioactive decontamination works.	Directly contacting with radioactive substances and materials contaminated with radioactive substances.
24	Measuring and evaluating radiation safety for radiation facilities, nuclear facilities, and radioactive ore extraction and processing facilities.	Frequently contacting with ionizing irradiation.
25	Testing, verifying, repairing and maintaining radiation equipment and radioactive sources.	Working in direct contact with ionizing irradiation.
26	Packing, storing and transporting radioactive substances and radiopharmaceuticals.	Frequently and directly contacting with radioactive substances and radioactive dust; facing risks in transportation.
27	Using radiation sources or equipment with the ratio of radioactivity higher than or equal to 10.	Working in frequent contact with radiation sources.
28	Taking charge of radiation safety for facilities using radiation sources or equipment with the ratio of radioactivity higher than or equal to 10.	Working in frequent contact with radiation sources.
29	Searching, positioning and coping with radiation emergencies, and performing decontamination of radiation exposure in the environment.	Arduous work; working mainly in outdoor radiation environment.
30	Recovering radioactive sources, escorting radioactive sources	Directly contacting with radioactive substances, radioactive materials and nuclear materials with radiation doses which may cause danger.
31	Dismantling nuclear facilities, nuclear equipment, managing radioactive decontamination works.	Directly contacting with radioactive substances and materials contaminated with radioactive substances.
32	Measuring and evaluating radiation safety for radiation facilities, nuclear facilities, and radioactive ore extraction and processing facilities.	Frequently contacting with ionizing irradiation.
33	Testing, verifying, repairing and maintaining radiation equipment and radioactive sources.	Working in direct contact with ionizing irradiation.
34	Performing ore dressing and processing radioactive ores and rare earth ores.	Frequently and directly contacting with radioactive substances (U, Th, Ra, Rn, etc.), radioactive ore dust, noise and toxic substances.
	Class-IV working conditions
1	Studying the production of materials for generating energy sources and environmental remediation.	^{Working in contact with toxic chemicals such as lead powder, H2SO4, SO3, etc.}
2	Studying the production of composite materials, paint, plastic, rubber.	Working in contact with chemicals and toxic solvents such as phenol, butanol, toluene, and acids.
3	Extracting bioactive compounds from animals and plants.	Working in contact with chemicals and toxic organic solvents such as benzene, toluene, and methanol.
4	Analyzing absolute age of ore samples.	Working in contact with chemicals and toxic organic solvents such as ^{HF, HCl, HNO}3^{, benzene.}
5	Observing electromagnetic radiation of the earth by radiation sources.	Working outdoor and under impact of radiation.
6	Processing and making animal specimens (tanning, stuffing, etc.).	Working in contact with toxic chemicals such as formaldehyde, ^Cr2^O3 and compounds that contain arsenic.
7	Biochemistry and enzyme technology.	^{Working in contact with chemicals and toxic organic solvents such as HgCl}2^,chloroform, toluene and CO2 in excess of permissible limits.
8	Making specimens of invertebrates, insects, and parasites.	^{Working in contact with chemicals,}alcohols, inorganic and organic acids, and phenol in excess of permissible limits.
9	Testing vibration, shock resistance of building materials, construction works and traffic works.	^{Working in contact with dust with very high concentration of SiO}2^{, noise, tremor, violent and continuous shake.}
10	Testing for protection against dust intrusion of electrical equipment.	Working in contact with electromagnetic field, air dust and loud noise.
11	Inspecting and calibrating temperature converters, pressure measuring instruments in tanks, tank trucks carrying gasoline and on barges.	Working outdoor; static working posture; working in frequent contact with gasoline, oil which are flammable and explosive.
12	Testing for durability, aging and flammability of electrical materials.	Working in closed space and in frequent contact with high temperature, combustible dust, toxic gases of burned plastic and solvents.
13	Testing for surface discharge	Arduous and hazardous work; working in contact with high voltage and air dust from burned plastic, rubber and solvents.
14	Taking chemical, solvent and gasoline samples for testing.	Working outdoor and in frequent contact with toxic chemicals; facing danger when taking field samples.
15	Taking samples of fertilizers and pesticides for testing.	Working in frequent contact with pesticides and toxic chemicals.
16	Testing for environmental chemistry, food chemistry and consumables.	Working in contact with dust, chemicals and toxic organic solvents with high concentration such as ^H2^SO4^{, HNO}3^{, arsenic, acetone, toluene, benzene, chlorine, formaldehyde, etc.}
17	Inspecting imported/exported goods at warehouses and holds.	A lot of travel; working outdoor and under impact of dust, heat and cold.
18	Directly doing radiation jobs, doing jobs using other radioactive sources with the ratio of radioactivity of less than 10.	Working in direct contact with radiation sources.
19	Performing electromagnetic compatibility testing.	Working in direct contact with electromagnetic field.

XXVI. AVIATION

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Airplane pilots.	Dangerous and stressful work; working under impact of loud noise, tremor, changes in temperature and pressure.
2	Operating, maintaining and repairing radars at stations and airports; performing radar observation.	Working under impact of noise and ultra-high-frequency electromagnetic field
	Class-V working conditions
1	Flight attendants	Stressful work; working under impact of noise, tremor, changes in temperature and pressure.
2	Moving, installing aircraft radar and radio equipment.	Working under impact of loud noise and radiation.
3	Air traffic control: directing long-distance flights, guiding airplanes to approach, take off, and land at the airport.	Working under impact of noise and electromagnetic field; stressful work with high responsibility.
4	Operating, repairing and maintaining UHF communication equipment from 300 to 3000 MHZ.	Working under impact of noise and high-frequency electromagnetic field.
5	Installing radar equipment.	Working outdoor and under impact of ultra-high-frequency electromagnetic field; static working posture.
6	Loading and unloading baggage into and out of aircrafts.	Arduous work; working under impact of heat, dust and noise.
7	Shaping, welding, mending, and covering airplane wings.	Manual and arduous work; static working posture; working under impact of toxic gases, dust and noise.
8	Drivers of specialized trucks used for transporting aviation gasoline with a capacity of 16,5 tonnes or more.	Arduous and dangerous work; working under impact of heat, noise and tremor.
9	Installing, maintaining, repairing aviation antennas at a height of 50 m or higher.	Outdoor, manual, arduous and dangerous work; static working posture; working under impact of electromagnetic field, dust and paint thinner.
10	Installing, repairing, and maintaining aviation communication lines.	Working outdoor; arduous work; working under impact of electromagnetic field, noise and dust.
	Class-IV working conditions
1	Washing filters using ultrasound.	Working under impact of ultrasound, oil vapor, and heat.
2	Charging batteries at airports, ACC, APP	Working in hot and noisy environment, and under impact of toxic acid vapors.
3	Preserving foods in cold storage.	Arduous work; working in closed rooms and under impact of cold air.
4	Protecting runways, aprons, and radar stations.	Working outdoor; working under impact of noise and electromagnetic field.
5	Repairing specialized vehicles and dollies at airports	Arduous work; working under impact of noise, electromagnetic field, vapors of gasoline, oil and chemicals.
6	Collecting and arranging containers at airports.	Working in hot and noisy environment; arduous work.
7	Sewing and woodworking in aircraft industry.	Arduous work; working under impact of heat, dust and noise.
8	Operating and repairing fire extinguisher chargers.	^{Working in hot and noisy environment, and under impact of CO}2^.
9	Firefighters at airports	Working under impact of noise and electromagnetic field.
10	Keeping and preserving chemicals.	Arduous work; working under impact of toxic chemicals, dust and noise.
11	Delivering and receiving goods at warehouses	Arduous work; working under impact of noise, heat and toxic gases.
12	Guiding airplanes to aprons.	Working outdoor, in hot and noisy environment; stressful work.
13	Operating, coordinating and making announcements at airports	Working under impact of electromagnetic field; stressful work.
14	Operating baggage scanners and security scanners.	Working under impact of radiation and electromagnetic field.
15	Performing computer repair and programming works	Working under impact of ionizing radiation; stressful work.
16	Operating and repairing measuring and calibration instruments.	Working under impact of electromagnetic field, heat and noise.
17	Monitoring radars, AMSS, AFTN.	Working under impact of electromagnetic waves; stressful work.
18	Receiving, dispensing, operating, charging, testing aviation fuel.	Arduous work; working in contact with gasoline, heat and noise.
19	Protecting, repairing and cleaning gasoline/oil pipes, depots or tanks.	Arduous work; working in contact with vapors, gasoline and oil.
20	Keeping aviation fuel depots.	Arduous work; working in contact with gasoline and oil.
21	Building and maintaining terminals, runways, taxiways and aprons.	Arduous work; working outdoor and under impact of noise and dust.
22	Operating plastic pressing machines, blowing, printing, cutting and gluing polymer, sucking PVC membrane, screen-printing.	Arduous work; working in contact with toxic chemicals, dust, heat and noise.
23	Cooking foods for passengers.	Manual and arduous work; working under impact of heat.
24	Operating building equipment at terminals or airports.	Arduous work; working in frequent contact with noise and dust.
25	Aircraft mechanics.	Working in a noisy environment; arduous work; static working posture;
26	Annealing aircraft elements.	Arduous work; working under impact of heat and noise.
27	Repairing and maintaining iron and steel structures at airports.	Outdoor, manual and arduous work; working in a noisy environment, and in contact with electromagnetic field.
28	Handling goods and luggage at entrepots and warehouses.	Arduous work; working in hot and noisy environment.
29	Driving aircraft refueling trucks.	Arduous work; working under impact of noise, electromagnetic field and gasoline and oil vapors.
30	Driving airport shuttles in aprons.	Working under impact of heat and noise; stressful work.
31	Analyzing and measuring chemicals.	Working in frequent contact with toxic chemicals.
32	Cleaning runways, aprons, car parking lots and radar stations.	Working outdoor; arduous work; working under impact of noise and dust.
33	Supervising ground and air services in aprons.	A lot of travel; working under impact of noise and electromagnetic field.
34	Washing dishes and food containers.	Arduous work; static working posture; working at a wet place.
35	Repairing electrical and water systems at airports.	Arduous work; working under impact of noise and electromagnetic field.
36	Operating, maintaining and repairing equipment of ACC, APP centers.	Working under impact of noise and electromagnetic field.
37	Installing, maintaining, repairing aviation antennas at a height of below 50m.	Working outdoor; static working posture; manual and arduous work; working under impact of dust and paint thinner.
38	Performing aeronautical meteorological observations.	Working under impact of noise and electromagnetic field.
39	Cleaning aircrafts, spraying anti-contagion chemicals and pesticides on aircrafts	Arduous work; working under impact of toxic chemicals, noise and electromagnetic field.
40	Cleaning aircrafts; treating environmental waste; washing and fitting carpets on aircrafts.	Arduous work; static working posture; working in contact with dust and pathogenic microorganisms.
41	Operating, repairing and maintaining VHF communication equipment from 30 to under 300 MHZ.	Working under impact of noise and electromagnetic field.
42	Installing receivers and transmitters.	Working outdoor; working under impact of electromagnetic field; static working posture.
43	Operating specialized vehicles in aprons.	Working in hot and noisy environment, and under impact of electromagnetic field.

XXVII. PRODUCTION AND PROCESSING OF TABLE SALT

No.	Occupation or work	Working conditions
	Class-IV working conditions
1	Manually producing table salt	Working outdoor; manual and extremely arduous work.
2	Manually and semi-manually loading, mixing and packaging iodized salt.	Manual and arduous work; static working posture; working in a wet place.
3	Workers in factories that produce chemicals (MgCO3, MgCl2, MgSO4).	^{Manual work; working}with heat, moisture, and chemicals such as alkalis, Cl2, NaCO3

XXVIII. SPORTS, CULTURE AND COMMUNICATION

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Contortionists, acrobats, and other circus performers at a height.	Extremely arduous, dangerous and stressful work; working under impact of noise and intense light.
2	Boxers, wrestlers, weight-lifters, divers.	Intensive, exhausting, dangerous and stressful work.
3	Soccer players, car, motorbike, speedboat, airplane, glider racers, parachute jumpers, horse racers.	Outdoor, intensive, exhausting, extremely dangerous and stressful work.
4	Water scooter riders and instructors.	Working outdoor and underwater; intensive, exhausting and stressful work.
5	Paragliding players and instructors.	Outdoor, intensive, exhausting, dangerous and stressful work.
6	Rock climbers or rock climbing instructors.	Working outdoor; very steep and dangerous workplace; intensive, exhausting and stressful work.
	Class-V working conditions
1	Archaeological survey and excavation.	A lot of travel; extremely arduous work; working in contact with toxic chemicals and gases in tombs.
2	Ballet dancers, traditional dancers, and traditional singers.	Extremely arduous and stressful work; working under impact of noise and intense light.
3	Water puppeteers.	Always soaking in dirty water (in both summer and winter); arduous work; working in frequent contact with fungi, pathogenic microorganisms, noise and firecracker smoke.
4	Animal trainers and tamers.	Dangerous and stressful work; working under impact of noise and intense light.
5	Circus performers.	Dangerous and stressful work; working under impact of noise and intense light.
6	Wind instrument musicians, conductors.	Extremely stressful work; working under impact of noise and intense light.
7	Operating, repairing, and maintaining technical equipment in museum basements.	Working underground and under frequent impact of loud noise, gasoline, and oil.
8	Soccer, boxing, wrestling, diving, car racing, motorbike racing, airplane racing, parachuting, and horse racing trainers.	Intensive, exhausting, dangerous and stressful work.
9	Basketball players, handball players, track and field athletes, cyclists, swimmers, synchronized swimmers, oarsmen, water polo players, divers, gymnasts	Intensive, exhausting, dangerous and stressful work.
10	Powerboat instructors.	Outdoor, intensive, exhausting, extremely dangerous and stressful work.
11	Boat racing instructors.	Outdoor, intensive, exhausting, extremely dangerous and stressful work.
12	Weightlifting coaches.	Intensive, exhausting, dangerous and stressful work.
13	Gymnastics coaches.	Intensive, exhausting, extremely dangerous and stressful work.
	Class-IV working conditions
1	Operating offset printers, typo machines, paper cutters.	Working in frequent contact with dust, noise and toxic chemicals.
2	Making mechanical and electrical repairs of power tools, printers, cutters, etc.	Static working posture; working in frequent contact with noise, dust, toxic chemicals, grease and oil.
3	Treating, drying and repairing offset plates.	Working in frequent contact with toxic chemicals and UV ray.
4	Photographing and converting films into plates.	Working in closed rooms lacking light, and under impact of toxic chemicals.
5	Electronically typesetting.	Working in closed rooms and under impact of ionizing radiation.
6	Preparing and preserving chemicals.	Working in frequent contact with various types of toxic chemicals.
7	Operating, repairing, and maintaining film production equipment.	A lot of travel; working in contact with noise and toxic chemicals.
8	Setting up scenes and explosion effects.	A lot of travel; arduous work; working in contact with toxic chemicals (gunpowder, etc.).
9	Setting up circus tents and exhibition houses.	Manual, arduous and dangerous work; a lot of travel.
10	Caring animals.	Arduous and dangerous work; working in frequent contact with animal wastes, fungi and pathogenic microorganisms
11	Musicians in orchestras.	Extremely stressful work; working under impact of noise and intense light.
12	Making puppets.	Working in frequent contact with toxic chemicals such as gasoline, acetone, paint.
13	Keeping, preserving, and processing exhibits, documents, books, magazines, films, and pictures in warehouses of museums, libraries, and archives.	Frequently working in closed rooms lacking oxygen, and in contact with chemicals, fungi and molds.
14	Repairing, restoring documents and exhibits of museums, libraries, and archives	Static working posture; working under impact of chemicals, fungi dust and molds.
15	Carving historical remains, statues and sculptures.	A lot of travel; arduous and dangerous work; static working posture.
16	Propagating information in mountainous provinces and on islands.	A lot of travel; working in forests, mountainous areas and on islands.
17	Photographic processing.	Working in closed rooms lacking light and oxygen, and in contact with toxic chemicals.
18	Traditional art performers, professional actors, actresses, and singers.	Stressful work; working under impact of noise, intense light and heat.
19	Guiding tourists in Ho Chi Minh Museum.	Involving a lot of travel and speaking; stressful work.
20	Sepak takraw, table tennis, volleyball, badminton, tennis, shooting, archery, crossbow, fencing, chess, and Chinese chess players.	Intensive and extremely stressful work.
21	Basketball, handball, track and field, cycling, swimming, diving, surfing, volleyball, sepak takraw, and shooting trainers.	Outdoor, intensive, exhausting and stressful work.
22	Gym teachers in sports schools and sports faculties.	Outdoor, intensive, exhausting and stressful work.
23	Installing, maintaining and repairing billboards.	A lot of travel; working outdoor and at height; dangerous work; carrying heavy objects.
24	Performing film projection activities in rural, forest and mountainous areas, and on islands.	Frequently working in rural, mountainous and remote areas; carrying heavy and dirty machinery and equipment.
25	Guiding visitors at Presidential Palace Historical Site	Intensive work; constantly walking and speaking during the shift; stressful work.
26	Dancers and dance instructors.	Intensive, exhausting and stressful work.
27	Fencing coaches.	Intensive, exhausting, dangerous and stressful work.
28	Roller-skaters and roller-skating instructors.	Intensive, exhausting, dangerous and stressful work.

XXIX. WAR INVALIDS AND SOCIAL AFFAIRS

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Directly giving examination, treatment and testing for patients with leprosy, tuberculosis, mental disease, paralysis, spinal cord injury, brain injuries in hospitals, rehabilitation centers.	Arduous and hazardous work; working in frequent contact with dirty and stinky excreta, pus, urine.
2	Manually pouring and shaping liquid synthetic plastics to produce prosthetic legs and arms.	Static working posture; working in frequent contact with organic solvents and other toxic chemicals.
3	Directly giving examination, treatment and testing, serving, caring, rearing and assisting patients with HIV/AIDS, leprosy, tuberculosis, mental disease, and very severe disabilities in hospitals, rehabilitation centers, and social assistance facilities.	Arduous, hazardous and dangerous work; working in frequent contact with pathogenic viruses and bacteria, dirty and stinky excreta, pus, urine.
4	Directly giving examination, treatment and testing, serving, caring, rearing and assisting elderly people who cannot take care of themselves, children under the age of 4.	Arduous and hazardous work; working in frequent contact with dirty and stinky excreta, pus, urine. Static working posture; bending multiple times
5	Directly giving examination, treatment and testing, serving, caring, rearing and assisting patients with persons with severe disabilities in hospitals, rehabilitation centers, and social assistance facilities.	Arduous and hazardous work; working in frequent contact with dirty and stinky excreta, pus, urine.
	Class-IV working conditions
1	Working in facilities providing treatment and rehabilitation for patients with leprosy, tuberculosis, mental disease, paralysis, spinal cord injury, brain injuries	Frequently working in environments posing high risk of infection; extremely stressful work.
2	Producing orthopedic products (prosthetic legs, arms, orthopedic shoes, splints, etc.).	Arduous work; working under impact of very dust and loud noise
3	Archivists at: - Archives center of Vietnam Social Security; - Archives of social security offices of provinces/cities; - Archives of district social security offices that store at least 15.000 dossiers of participants and beneficiaries. - Archives of dossiers of meritorious people.	Working in closed rooms, and in contact with documents bearing fungi and parasites; treating technical issues; contacting with chemicals.
4	Managing martyr cemeteries	Monotonous and stressful work.
5	Receiving and checking biological samples for ADN inspection	Working in frequent contact with pathogenic microorganisms; stressful work.
6	Providing examination, treatment, counseling, educational, vocational and cultural training programs, and occupational therapy for, and managing trainees at detoxification facilities.	Facing high risk of infection; working under impact of viruses; work is likely to threaten life and health.
7	Directly giving examination, treatment and testing, serving, caring, rearing and assisting children aged 4 or older, persons requiring emergency protection, and elderly people in hospitals, rehabilitation centers and social assistance facilities.	Arduous and hazardous work; working in frequent contact with dirty and stinky excreta, pus, urine.
8	Indirectly managing and giving examination, treatment and testing, serving, caring, rearing and assisting patients with HIV/AIDS, leprosy, tuberculosis, mental disease, and very severe disabilities in hospitals, rehabilitation centers, and social assistance facilities.	Dangerous work; working in contact with viruses, pathogenic microorganisms; solving complicated works; stressful work.
9	Indirectly performing social and healthcare works; social affairs and healthcare officials and public employees who perform management and serving tasks in hospitals, rehabilitation centers, and social assistance facilities	Working in contact with wastes, microorganisms; solving complicated works; stressful work.

XXX. CONFECTIONERY, BEER, ALCOHOL AND SOFT DRINKS

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Paraffin coating on alcohol tanks	Working in closed and hot basements lacking oxygen; working with high-concentration alcohol vapors. Static working posture; manual work.
2	Beer fermentation in cold basements.	Manual and arduous work; working in wet and cold environment (2-5⁰C ), with high concentration of ^CO2.
	Class-IV working conditions
1	Operating machines to produce starch paper	Working in hot and confined space lacking oxygen, and under impact humidity in excess of permissible limits; static working posture.
2	Manually boiling syrup	Extremely arduous work; static working posture; working under frequent impact of heat, CO, CO2
3	Boiling syrup by steam	Arduous work; working in a hot environment; static working posture.
4	Cooling and kneading candies manually	Manual and arduous work; static working posture; working under impact of heat.
5	Baking cookies and wafers manually.	Manual and arduous work; working under impact of heat.
6	Transporting ingredients of alcohol, beer and soft drinks	Manual and arduous work; working in extremely dusty environment.
7	Grinding materials for producing alcohol and beer.	Working under impact of loud noise and dust Semi-manual work.
8	Operating equipment to cook alcohol materials.	Arduous work; working under impact of high temperature.
9	Mashing and fermentation in alcohol production.	^{Working in wet environment and in contact with formaldehyde, CO}2^{, fungi and other chemicals.} Static working posture; arduous work.
10	Operating alcohol distillation equipment	Working under impact of high temperature and in frequent contact with alcohol vapors, aldehydes and other toxic chemicals.
11	Analyzing and inspecting quality of alcohol in alcohol, beer and soft drink production.	Working in frequent contact with high-concentration ethyl alcohol and toxic chemicals.
12	Distilling flavorings used in liqueur production.	Working under impact of high temperature and in frequent contact with alcohol and flavorings. Static working posture; arduous work.
13	Fermenting fruits used for producing wines.	Working in a wet environment and in frequent contact with microorganisms and ^CO2^{. Static working posture; manual and arduous work.}
14	Operating ammonia refrigeration compressor	Working under impact of high temperature and loud noise, and in frequent contact with NH3 which adversely affects nervous system.
15	^{Operating CO}2 recovery equipment and storing ^CO2 cylinders	Arduous, hazardous and dangerous work; working in frequent contact with ^CO2
16	Operating beer and soft drink boiling and filtering equipment	Semi-manual and arduous work. Working with high temperature, loud noise and dust.
17	Working in alcohol, beer and soft drink can/bottle washing lines.	Working in frequent contact with chemicals, noise and high temperature
18	Manually loading/unloading casks and kegs in the production of alcohol, beer and soft drinks.	Arduous work; static working posture; working in contact with dust.
19	Producing cardboard boxes for containing alcohol, beer or soft drink cans or bottles	Working in a hot, dusty and noisy environment; static working posture.
20	Drying jelly candy.	Manual, arduous and monotonous work; working under impact of heat and dust in excess of permissible limits.
21	Producing starch paper (treating, centrifuging and gelatinizing)	Manual and arduous work; working in wet and hot environment.

XXXI. TOURISM

No.	Occupation or work	Working conditions
	Class-IV working conditions
1	Cooking in restaurants, hotels, and communal kitchens that provide at least 100 servings	Arduous work; working in a wet place and under frequent impact of heat.
2	Beach lifeguards	Arduous and dangerous work; working under frequent impact of waves and wind.
3	Preparing foods for cooking at least 100 servings in restaurants or hotels.	Manual and arduous work; standing, bending and moving during the shift; working in heat and wet environment, and in contact with CO2 from fuels.
4	Washing dishes, chopsticks and utensils in restaurants and hotels.	Arduous work requiring prompt and continuous actions; standing and bending during the shift; working in hot and wet environment, and under impact of detergents.
5	Storing, delivering and transporting foods in cold storage.	Working in hot and cold (under 0 ⁰C) environment; transporting foods during the shift.
6	Cleaning kitchens and sewers of hotels.	^{Arduous and unfixed work; working in contact with dirt, humidity, CO2, fungi and microorganisms.}
7	Doing manual laundry in hotels.	Arduous and manual work; working in hot and wet place, and in direct contact with detergents, sodas and acids, etc.
8	Driving passenger cars of at least 40 seats	A lot of travel; dangerous and stressful work; working under impact of noise, tremor and gasoline vapors.

XXXII. BANKING

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Manufacturing money printing rollers	Working under impact of high temperature and class-A dangerous and toxic chemicals
2	Manufacturing money printing plates	Working under impact of chromic acid and sulfuric acid in excess of permissible limits
3	Operating money printers, Scratch-off ticket printers.	Working under impact of loud noise and highly toxic chemicals in excess of permissible limits.
4	Treating wastewater of money printing plants	Working under impact of highly toxic chemicals such as sulfuric acid, chromic acid and ferricyanide
5	Manager and assistant manager of Central Bank’s vault (with an areas of at least 2000 m²)	^{Arduous work; working at a poorly ventilated place (O2 is lower than permissible limit), and under impact of chemicals used for killing termites and moths, and CO}2^.
6	Disposing of torn or damaged money	Working in confined space; arduous work; working under impact of noise and dust (impurities, pathogenic fungi and microorganisms)
	Class-IV working conditions
1	Operating money cutting and packing machines	Working in poorly ventilated place and under impact of residues of chemicals used in money printing (solvents, metal oxides, etc.) in excess of permissible limits.
2	Inspecting and packing new money.	Working in poorly ventilated place; optical strain; working under direct impact of residues of chemicals used in money printing.
3	Keeping warehouses, storing and delivering paper used for printing money and new money.	Working in confined and poorly-ventilated space, and under impact of chemicals used for preserving printing paper and chemical residues in new money.
4	Doing industrial cleaning job in money printing plants	Manual and arduous work; working under impact of solvents and chemicals in excess of permissible limits.
5	Managers and assistant managers of vaults of provincial banks (with an area of less than 2000 m2).	Working in confined and poorly-ventilated space ^{(O2 is lower than permissible limit),} and under impact of chemicals used for killing termites and moths, and ^CO2^...
6	Cash management officers and cashiers of banks.	Very busy work; frequent movements; optical strain; working under impact of high-concentration dust (synthetic dust, harmful fungi and microorganisms)
7	Separating metals; goldsmiths and silversmiths	Static working posture; optical strain; working under impact of heat and toxic chemicals.
8	Heating and manipulating precious stones.	Static working posture; frequent movement; optical strain; working under impact of stone dust and highly toxic chemicals (HF).
9	Inspecting and classifying precious stones.	Meticulous work; optical strain; working under impact of intense light, ultraviolet rays and toxic chemicals (HF).
10	Drawing specimen banknotes.	Static working posture; stressful work requiring intense concentration and meticulous actions.

XXXIII. PAPER PRODUCTION

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Operating and repairing machines for electrolyzing and testing chlorine soda.	Arduous and hazardous work; working in frequent contact with asbestos dust and toxic chemicals.
2	Operating heat recovery steam generators (burning black liquor)	Arduous and dangerous work; working in frequent contact with toxic chemicals.
3	Manually shoveling, transporting, and feeding lime powder to make slaked lime.	Manual and arduous work; working in frequent contact with lime dust in excess of permissible limits
	Class-IV working conditions
1	Transporting raw materials (bamboo, rattan, flour) manually.	Outdoor, manual and arduous work; static working posture; working under impact of dust and noise.
2	Operating wood peeling machines, material feeding, chopping, sieving machines	Working at height; static working posture; working under impact of dust and noise in excess of permissible limits
3	Producing paper pulp by mechanical, thermal, and chemical methods.	Arduous work; working under impact of noise, dust, heat and toxic chemicals
4	Operating paper-making machines.	Standing to observe throughout the shift; working under impact of noise, heat, and dust.
5	Semi-manually rolling and cutting toilet paper.	Arduous work; static working posture; working under impact of noise and dust.
6	Operating paper coating machines.	Arduous and dangerous work; working under impact of high temperature and toxic chemicals.
7	Producing glue for paper coating.	Arduous work; static working posture; working under impact of dust, noise and toxic chemicals.
8	Producing lime.	Working under frequent impact of heat, noise and very high-concentration dust
9	Distillation, alkalization.	A lot of travel; working under impact of heat, lime dust and toxic chemicals.
10	Doing industrial cleaning job in distillation and alkalization areas.	Manual and arduous work; static working posture; working under impact of heat, dust and chemicals.
11	Pouring into Na₂SO₄ recovery boiler.	Manual and arduous work; static working posture; working in contact with chemicals.
12	Operating sewage treatment systems	Working in smelly place and under impact of noise and chemicals (such as NaOH, H₂SO₄, H₂S).
13	Operating grinding machines.	Arduous work; working under impact of cement noise and dust in excess of permissible limits.
14	Repairing, welding PVC pipes and derakane.	Static working posture; working in contact with glass cotton dust and toxic chemicals.
15	Operating hydraulic plywood pressing machines.	Arduous work; static working posture; working under impact of chemicals.
16	Plywood edge banding.	Arduous work; working under impact of very high-concentration dust and loud noise
17	Polishing plywood surface.	Arduous work; static working posture; working under impact of noise and dust.
18	Producing and applying phenolic adhesives.	Working in frequent contact with highly toxic chemicals
19	Operating paper pulp crushers.	Working under impact of chemicals, noise and dust
20	Producing additives and chemicals for paper production.	Working in frequent contact with toxic chemicals.
21	Planting, caring and harvesting forest trees (in pulpwood plantation).	Working outdoor; manual and arduous work; working in contact with insects.

XXXIV. FISHERIES

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Operating, repairing, and maintaining engines of offshore and onshore fishing ships.	Extremely arduous and dangerous work; static working posture; working under impact of heat, tremor, gasoline, oil and loud noise.
2	Operating, repairing, maintaining engines of fisheries surveillance vessels and research vessels	Extremely arduous and dangerous work; working under impact of tremor and loud noise
3	Diving to catch natural seabed organisms.	Extremely arduous and dangerous work.
4	Manually loading in the holds of fishing ships	Extremely arduous work; working in confined space lacking oxygen; static working posture.
5	Sea divers (raising fish in cages at sea).	Constantly diving at a depth more than 10 m to check cages.
	Class-V working conditions
1	Officers and crew members working on offshore and onshore fishing ships	Arduous and dangerous work; working under impact of wind, waves, tremor and noise.
2	Harvesting swallow’s nest.	Constantly working on remote islands; arduous and extremely dangerous work.
3	Operating machines for grinding, crushing, and drying seafood waste for producing cattle feed.	Working in dirty and smelly work; working in contact with heat, noise, dust, and pathogenic fungi and microorganisms.
4	Officers and crew members working on fisheries surveillance vessels and research vessels	Arduous and dangerous work; working under impact of waves, wind and tremor.
5	Loading and unloading ice from marine fishing ships.	Extremely arduous work; working in confined space; static working posture.
6	Regularly working in cold holds or storage.	Arduous work; static working posture; working in confined and cold space.
7	Extracting ingredients and producing breeding stimulants for fish.	^{Working in frequent contact with toxic chemicals such as}H2SO4, acetone, benzoic acid.
8	Installing, repairing mechanical and refrigeration electrical equipment, pipelines, and valves in the holds of marine fishing ships.	Arduous work; working in confined space; static working posture; working in contact with pathogenic microorganisms.
9	Officers and crew members working on ships purchasing and transporting aquatic products at sea.	Arduous and dangerous work; working under impact of waves, wind, noise and tremor, and in contact with stinking and smelly aquatic products.
10	Performing cage culture at sea	Working at sea; working under frequent impact of sea waves, unexpected whirlwind
11	Harvesting catfish and basa fish.	Working outdoor and underwater; frequently carrying heavy objects; dangerous work.
	Class-IV working conditions
1	Raising oysters for pearls.	Outdoor and arduous work; frequently soaking in water.
2	Processing frozen aquatic products and seafood	Standing throughout the shift; working in frequent contact with cold water, and in a swampy and damp environment.
3	Operating frozen aquatic products and seafood processing systems	Working in confined space, and in frequent contact with heat, noise; wet workplace.
4	Operating, repairing, and maintaining cold storage, block ice making machines and flake ice making machines	Arduous work; static working posture; working in frequent contact with cold.
5	Processing ingredient fish sources, various fish pastes, dried aquatic products and seafood; cleaning packages and fermentation barrels.	Arduous work; static working posture; working at a swampy and wet place.
6	Directly providing technical guidance on production of breeding stimulants for fish.	^{Working under impact of toxic chemicals such as H}2^SO4^{, acetone, benzoic acid.}
7	Repairing fishing equipment	Manual and arduous work; static working posture; working in frequent contact with pathogenic microorganisms.
8	Raising and catching aquatic products in rivers, lakes and swamps.	Dangerous and extremely arduous work; working in frequent contact with pathogenic microorganisms.
9	Stretching, steaming, dying nets.	Extremely arduous work; working under frequent impact of high temperature and toxic chemicals.
10	Operating, repairing, and maintaining equipment for producing and recycling strings.	Static working posture; working under impact of noise and toxic chemicals.
11	Producing strings for weaving nets	Monotonous work; optical strain; working in contact with noise and dust
12	Knotting strings manually or instrumentally	Arduous work; static working posture; working under impact of noise and dust.
13	Conducting chemical tests to analyze quality of aquatic products and seafood	Working in frequent contact with toxic chemicals.
14	Producing feeds for shrimps and fish	Arduous work; working under impact of dust and noise
15	Producing Chitin, Chitosan, Gelatin Alginate, Agar-agar	Arduous and outdoor work; working in contact with alkali, acids, and bleach (javel).
16	Mixing pasta compounds to make can lids; coating food cans with varnish.	^{Working in frequent contact with}NH3, paint, and organic solvents.
17	Creating, directing the creation of breeds of shrimps, fish, mollusks, and other aquatic products and seafood.	Arduous and outdoor work; working in swamps, rivers, lakes, etc.
18	Taking and analyzing water samples and organism samples; processing specimens.	^{Working in frequent contact with H2SO4, HCl, etc.}
19	Operating net weaving machines	Arduous work; working under impact of noise
20	Drying, concocting, testing fish oil softgels	Working in frequent contact with heat, alcohol, and acetone.
21	Doing industrial cleaning job in aquatic product and seafood processing factories.	Manual and arduous work; static working posture; working in frequent contact with pathogenic microorganisms.
22	Raising lobsters in cages	Frequently diving at 5 - 8 m.

XXXV. PETROLEUM

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Drilling oil on offshore oil rigs.	Working outdoor; extremely arduous and dangerous work; working under impact of noise, tremor, toxic chemicals, waves and wind.
2	Repairing oil wells on offshore oil rigs	Working outdoor; arduous and extremely dangerous work; working under impact of noise, tremor, and toxic chemicals.
3	Preventing corrosion for offshore petroleum works.	Arduous and dangerous work; working under impact of dust, toxic chemicals, noise, tremor, waves and wind.
4	Operating, repairing and maintaining engines of oil tankers.	Extremely arduous and dangerous work; working in confined space; static working posture; working under impact of tremor and loud noise.
5	Petroleum divers	Extremely arduous and dangerous work; working under impact of high pressure.
6	Doing oil well logging (carrotage, quantifying radiation) on offshore oil rigs	Dangerous work; working under impact of radioactive substances, tremor and noise.
7	Operating oil-drilling equipment in deserts.	Working outdoor, in deserts; extremely arduous and dangerous work; working under impact of noise, tremor and chemicals.
8	Operating oil-drilling equipment in swamps.	Working outdoor, in swamps; extremely arduous and dangerous works; working under impact of noise, tremor and chemicals.
9	Operating oil-drilling equipment on jack-up rigs, semi-submersible rigs, or drill ships	Working outdoor, at sea; working under impact of noise, tremor and chemicals.
10	Performing well logging operations in deserts.	Working outdoor, in deserts; extremely arduous and dangerous work; working under impact of radioactive substances, noise and tremor.
11	Performing well logging operations in swamps.	Working outdoor, in swamps; extremely arduous and dangerous work; working under impact of radioactive substances, noise and tremor.
12	Performing well logging operations on jack-up rigs, semi-submersible rigs, light drilling rigs, or drill ships	Working outdoor, at sea; extremely arduous and dangerous work; working under impact of radioactive substances, noise and tremor.
13	Repairing oil wells on oil-rigs in deserts.	Working outdoor, in deserts; arduous and extremely dangerous work; working under impact of noise, tremor and toxic chemicals.
14	Repairing oil wells on oil-rigs in swamps.	Working outdoor, in swamps; arduous and extremely dangerous work; working under impact of noise, tremor and toxic chemicals.
15	Repairing oil wells on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous and extremely dangerous work; working under impact of noise, tremor and toxic chemicals.
16	Operating, repairing and maintaining engines of drill ships.	Extremely arduous and dangerous work; working in confined space; static working posture; working under impact of tremor, noise and toxic gases.
17	Preventing corrosion for petroleum works in desert areas.	Working outdoor, in deserts; arduous and dangerous work; working under impact of dust, noise and toxic chemicals.
18	Preventing corrosion for petroleum works in swamp areas.	Working outdoor, in swamps; arduous and dangerous work; working under impact of dust, noise and toxic chemicals.
	Class-V working conditions
1	Pumping cement and drilling fluids on offshore oil rigs	Arduous and dangerous work; working under impact of toxic chemicals, noise, tremor.
2	Taking samples from oil wells on offshore oil rigs.	Extremely arduous and dangerous work; working under impact of toxic chemicals, noise, tremor.
3	Processing the bottom of oil wells on offshore oil rigs	Arduous and dangerous work; working under impact of toxic chemicals, noise, tremor.
4	Inducing oil flow on offshore drilling rigs.	Arduous and dangerous work; working under impact of toxic chemicals, noise, tremor.
5	Surveying and conducting well tests on offshore oil rigs.	Extremely arduous and dangerous work; working under impact of toxic chemicals, noise, tremor.
6	Mud-logging on offshore drilling rigs.	Arduous and dangerous work; working under impact of toxic chemicals, noise, tremor.
7	Blasting on offshore oil rigs.	Arduous and extremely dangerous work; working under impact of toxic gases
8	Operating, repairing, maintaining equipment for extracting and processing petroleum on offshore drilling rigs.	Working in dangerous place and under impact of noise, tremor and toxic chemicals.
9	Operating, repairing machinery and equipment on oil tankers and offshore petroleum works	Arduous work; static working posture; working in under impact of noise, tremor, and in frequent contact with oil and grease
10	Preventing and dealing with accidents on offshore drilling rigs.	Dangerous and stressful work; working under impact of noise and tremor.
11	Hanging goods on cables on offshore petroleum works.	Arduous and extremely dangerous work; working under impact of waves, wind, tremor and noise.
12	Operating X-ray machines and Auger spectroscopy machines	Working under frequent impact of radiation.
13	Installing and repairing petroleum works.	Arduous work; static working posture; working under impact of noise, and very high-concentration dust.
14	Conducting marine surveys	Arduous and dangerous work; working under impact of electromagnetic field, tremor, noise, waves and wind.
15	Operating floating cranes capable of at least 600 tonnes.	Dangerous work; working under impact of waves, wind, noise and tremor.
16	Diving physiologists	Arduous and dangerous work; working under impact of high pressure.
17	Analyzing special indicators (pressure, volume, temperature) of fluids and crude oil	Working in frequent contact with mercury and organic solvents.
18	Surveying, conducting well tests, and installing equipment in oil wells at petroleum works in desert areas.	Working outdoor, in deserts; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
19	Surveying, conducting well tests, and installing equipment in oil wells at petroleum works in swamp areas.	Working outdoor, in swamps; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
20	Surveying, conducting well tests, and installing equipment in oil wells on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
21	Operating rig balancing equipment on jack-up rigs, semi-submersible rigs or drill ships.	Working outdoor, at sea; arduous work; working under impact of noise, tremor and toxic chemicals.
22	Preparing and processing drilling fluids for petroleum works in desert areas.	Working outdoor, in deserts; arduous work; working under impact of noise, tremor and toxic chemicals.
23	Preparing and processing drilling fluids for petroleum works in swamp areas.	Working outdoor, in swamps; arduous work; working under impact of noise, tremor and toxic chemicals.
24	Preparing and processing drilling fluids on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous work; working under impact of noise, tremor and toxic chemicals.
25	Pumping cement and drilling fluids on petroleum works in desert areas.	Working outdoor, in deserts; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
26	Pumping cement and drilling fluids on petroleum works in swamp areas.	Working outdoor, in swamps; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
27	Pumping cement and drilling fluids on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
28	Operating systems and equipment for monitoring drilling and geological data at petroleum works in desert areas.	Working outdoor, in deserts; dangerous work; working under impact of noise, tremor and toxic chemicals.
29	Operating systems and equipment for monitoring drilling and geological data at petroleum works in swamp areas.	Working outdoor, in swamps; dangerous work; working under impact of noise, tremor and toxic chemicals.
30	Operating systems and equipment for monitoring drilling and geological data on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea, in instrument stations; dangerous work; working under impact of noise, tremor and toxic chemicals.
31	Blasting in wells (in exploratory drilling, extraction) at petroleum works in desert areas.	Working outdoor, in deserts; arduous and extremely dangerous work; working under impact of noise, tremor and toxic chemicals.
32	Blasting in wells (in exploratory drilling, extraction) at petroleum works in swamp areas.	Working outdoor, in swamps; arduous and extremely dangerous work; working under impact of noise, tremor and toxic chemicals.
33	Blasting in wells (in exploratory drilling, extraction) on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous and extremely dangerous work; working under impact of noise, tremor and toxic chemicals.
34	Taking samples from oil wells at petroleum works in desert areas.	Working outdoor, in deserts; extremely arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
35	Taking samples from oil wells at petroleum works in swamp areas.	Working outdoor, in swamps; extremely arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
36	Taking samples from oil wells on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous and extremely dangerous work; working under impact of noise, tremor and toxic chemicals.
37	Operating well control equipment at petroleum works in desert areas.	Working outdoor, in deserts; dangerous work; working under impact of noise and toxic chemicals.
38	Operating well control equipment at petroleum works in swamp areas.	Working outdoor, in swamps; dangerous workplace; working under impact of noise and toxic chemicals.
39	Operating well control equipment on jack-up rigs, semi-submersible rigs or drill ships.	Working outdoor, at sea; dangerous workplace; working under impact of noise, tremor and toxic chemicals.
40	Performing oil flow assurance for petroleum works in desert areas.	Working outdoor, in deserts; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
41	Performing oil flow assurance for petroleum works in swamp areas.	Working outdoor, in swamps; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
42	Performing oil flow assurance on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
43	Operating, repairing and maintaining equipment for extracting and processing oil at petroleum works in desert areas.	Working outdoor, in deserts; dangerous workplace; working under impact of noise, tremor and toxic chemicals.
44	Operating, repairing and maintaining equipment for extracting and processing petroleum at petroleum works in swamp areas.	Working outdoor, in swamps; dangerous workplace; working under impact of noise, tremor and toxic chemicals.
45	Operating, repairing and maintaining equipment for extracting and processing petroleum on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; dangerous workplace; working under impact of noise, tremor and toxic chemicals.
46	Operating well pump stations at petroleum works in desert areas.	Working outdoor, in deserts; dangerous workplace; working under impact of noise, tremor and toxic chemicals.
47	Operating well pump stations at petroleum works in swamp areas.	Working outdoor, in swamps; dangerous workplace; working under impact of noise, tremor and toxic chemicals.
48	Operating water injection systems on fixed platforms or water injection platforms.	Working outdoor, at sea, and under impact of noise, tremor and toxic chemicals.
49	Handling wells at petroleum works in desert areas.	Working outdoor, in deserts; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
50	Handling wells at petroleum works in swamp areas.	Working outdoor, in swamps; arduous and dangerous work; working under impact of noise, tremor and toxic chemicals.
51	Operating oil extraction systems using gas lift technique at petroleum works in desert areas.	Working outdoor, in deserts, and under impact of noise, tremor and toxic chemicals.
52	Operating oil extraction systems using gas lift technique at petroleum works in swamp areas.	Working outdoor, in swamps, and under impact of noise, tremor and toxic chemicals.
53	Operating oil extraction systems using gas-lift technique on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea, and under impact of noise, tremor and toxic chemicals.
54	Hanging cables on petroleum works in desert areas.	Working outdoor, in deserts; arduous and dangerous work; working under impact of noise and tremor.
55	Hanging cables on petroleum works in swamp areas.	Working outdoor, in swamps; arduous and dangerous work; working under impact of noise and tremor.
56	Hanging cables on jack-up rigs, semi-submersible rigs, or drill ships.	Working outdoor, at sea; arduous and dangerous work; working under impact of noise.
57	Delivering and maintaining materials, chemicals, and explosives at petroleum works in desert areas.	Working under severe weather conditions; arduous and dangerous work; working under impact of toxic chemicals.
58	Delivering and maintaining materials, chemicals, and explosives at petroleum works in swamp areas.	Working under severe weather conditions; arduous and dangerous work; working under impact of toxic chemicals.
59	Performing duties of warehouse-keepers, warehouse section heads, or staff in charge of managing chemicals at offshore petroleum works.	Working at sea; arduous and dangerous work; working under impact of toxic chemicals.
60	Operating turbines and diesel generators on offshore petroleum works and single point moorings.	Arduous work; static working posture; working under impact of noise, tremor and chemicals.
	Class-IV working conditions
1	Giving technical guidance on oil rigs	Dangerous and stressful work; working under impact of noise and tremor.
2	Cooking and serving on offshore petroleum works.	Arduous work; working under impact of heat, tremor and noise.
3	Cleaning oil spill.	Dangerous and stressful work; working under impact of noise and tremor.
4	Diving superintendents	Working under impact of waves, wind, noise, tremor.
5	Operating, repairing, and maintaining gas delivery equipment and gas pipelines.	Dangerous and stressful work; working under impact of noise, tremor and toxic chemicals
6	Watching and responding to fire/explosion of gas pumping stations and gas pipelines.	Dangerous and stressful work; working under impact of noise.
7	Repairing equipment for drilling and extracting petroleum	Arduous work; static working posture; working in frequent contact with oil, gasoline, and noise.
8	Repairing well logging equipment	Arduous work; static working posture; working under impact of radioactive substances.
9	Giving direct guidance on production, installation and repairing of petroleum works.	Dangerous and stressful work; working under impact of noise and dust.
10	Producing petrochemical products.	Arduous work; working in frequent contact with noise, tremor, dust and toxic chemicals such as concentrated acids, soda, etc.
11	Boiling fat from petroleum products	Arduous work; working in frequent contact with heat, grease, oil and additives
12	Producing, concocting lubricant	Arduous work; working in frequent contact with noise, grease, oil and additives
13	Doing industrial cleaning job in lubricant, fat and petrochemical product facilities	Manual and arduous work; working in frequent contact with gasoline, oil, dust, noise and toxic chemicals
14	Performing pressure tests for drilling pipes.	Arduous and dangerous work; working under impact of loud noise.
15	Repairing, maintaining equipment for boiling fat, producing lubricants and petrochemical products.	Arduous work; static working posture; working in frequent contact with oil, gasoline, dust, noise and toxic chemicals.
16	Processing core samples.	Working under impact of noise, dust, and toxic chemicals
17	Filtering, conducting geographical-chemical, mechanical-physical analysis of drilling fluids, crude oil, and petroleum products	Working in frequent contact with gasoline, oil and chemicals
18	Photographing using light from UV spectrum	Working under frequent impact of UV rays.
19	Analyzing micropaleontological, lithological specimens, and polluted formation water.	^{Working in frequent contact with organic solvents, HF, HCl, HNO3, CH}2^COOH
20	Refining organic solvents and additives	Working in frequent contact with heat, and toxic chemicals such as chloroform, isopropanol, etc.
21	Doctors, managers, interpreters, persons doing odd job or catering at petroleum works in desert areas.	Working under impact of severe weather conditions.
22	Doctors, managers, interpreters, persons doing odd job or catering job at petroleum works in swamp areas.	Working under impact of severe weather conditions.
23	Doctors, managers, interpreters, persons doing odd job or catering job on fixed platforms, jack-up rigs, semi-submersible rigs, drill ships, or oil tankers at sea.	Stressful work; working under impact of noise and tremor.
24	Operating LPG and LNG storage systems.	Dangerous work; facing risk of explosion, poisoning, chemical asphyxia and frostbite.
25	Operating turbines and diesel generators on onshore petroleum works.	Arduous work; static working posture; working under impact of noise and chemicals.
26	Operating gas input/output system at wharfs.	Dangerous work; working in contact with chemicals.
27	Operating gas distribution systems at gas processing plants, gas storehouses or ports, gas distribution stations or centers.	Dangerous work; working under impact of toxic chemicals; facing risk of fire and explosion.
28	Operating cracking systems using Residue Fluid Catalytic Cracking (RFCC) technology and treating RFCC naphtha.	Working outdoor; arduous and dangerous work; working under impact of noise, dust and heat.
29	Operating the system for processing of polypropylene from propylene which is a by-product of oil refining.	Working outdoor; arduous and dangerous work; working under impact of dust, noise, chemicals and radioactive rays.
30	Operating crude oil distillation and kerosene processing systems.	Working outdoor; arduous and dangerous work; working under impact of dust, noise, chemicals and radioactive rays.
31	Operating naphtha hydrotreating systems and catalytic reforming systems for the purpose of raising fuel octane rating.	Working outdoor; arduous and dangerous work; working under impact of dust, noise and chemicals.
32	Operating naphtha isomerization units.	Working outdoor; arduous and dangerous work; working under impact of dust, noise and chemical vapor.
33	Operating propylene or LPG treating and recovery systems.	Working outdoor; arduous and dangerous work; working under impact of dust, noise and chemical vapor.
34	Operating LCO (light cycle oil) hydrotreating systems.	Working outdoor; arduous and dangerous work; working under impact of dust, noise and chemical vapor.
35	Operating sodium hydroxide (NaOH) supply systems.	Working outdoor; arduous work; working under impact of noise and toxic chemicals.
36	Operating ethanol production equipment/systems.	Working outdoor; arduous work; working under impact of noise, toxic chemicals and radioactive rays.
37	Operating ammonia storage tanks and flare systems.	Working outdoor; arduous work; working under impact of noise and toxic chemicals.
38	Repairing, maintaining and testing equipment for processing petroleum, and petrochemical products.	Working outdoor; arduous and dangerous work; working under impact of toxic chemicals, noise, tremor, dust and radioactive substances; facing high risk of fire and explosion.
39	Operating equipment for prevention and control of fires and explosions, and emergency response in processing of petroleum and petroleum products.	Arduous and stressful work; facing high risk of fire and explosion.
40	Operating and making minor repairs of electrical, refrigeration electricity, communication or boiler systems on fixed platforms, jack-up rigs, semi-submersible rigs, drill ships, oil tankers or single point moorings at sea.	Arduous work; working at sea, and under impact of noise, tremor and toxic gases or vapors.
41	Responding to emergencies (fire, explosion, blowout, oil spill) on fixed platforms, jack-up rigs, semi-submersible rigs, drill ships, oil tankers or single point moorings at sea.	Dangerous and stressful work; working under impact of noise and tremor.

XXXVI. FOOD PROCESSING

No.	Occupation or work	Working conditions
	Class-IV working conditions
1	Processing chyme	Arduous work; static working posture; working under impact of high temperature, humidity, loud noise and dust.
2	Operating powder milk and nutrition supplement powder drying systems, fresh milk concentration towers.	Working with high temperature, loud noise, dust; requiring intense concentration.
3	Operating filling and packaging systems	Working in closed and poorly ventilated rooms with low humidity and loud noise; requiring prompt actions; monotonous work; static working posture; requiring intense concentration
4	Producing tin cans used for storing dairy and fruit products	Arduous and monotonous work; working under frequent impact of noise.
5	Preserving products in cold storage	Working under impact of suddently changed temperature; frequently working in cold conditions (-30 ⁰C). Manual, arduous and monotonous work.
6	Mixing ingredients (wheat flour) in production of instant noodles.	Semi-manual and arduous work; working under impact of dust, high temperature, tremor and noise.
7	Rolling, steaming and putting noodles into molds before frying	Working in hot and wet environments; semi-manual, monotonous and dangerous work (rolling stage)
8	Operating oil ovens, frying ovens (noodles, peanuts)	Arduous and dangerous work; working in frequent contact with high temperature and oil which is likely to cause accidents.
9	Operating machines for coating and steaming foods made of rice.	Working in hot and wet environments; semi-manual and monotonous work; a lot of travel; standing during the shift.
10	Collecting products after drying	Semi-manual and arduous work; static working posture; working in a hot place.
11	Grinding porridge raw materials	Semi-manual and arduous work; working under impact of dust and noise.
12	Processing materials, mixing and packaging soup powder, spices powder	Semi-manual and arduous work; working in frequent contact with high temperature and raw materials which stimulate mucous membrane, eyes, nose and skin.
13	Noodle snacks (grinding, sieving, recycling broken noodles)	Manual work; working in contact with high temperature and dust.
14	Processing chilli sauce	Manual work; working in hot and wet environment, and in contact with chilli (when grinding, cooking, crushing) which may stimulate skin and mucous membrane.

XXXVII. EDUCATION - TRAINING

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Performing nuclear physics tests	Working in frequent contact with radiation sources
2	Performing radiochemistry tests	Working in frequent contact with radiation sources and toxic chemicals
	Class-IV working conditions
1	Performing chemical, biological and high voltage tests	Working in closed rooms, and under impact of high electromagnetic field, and in contact with toxic chemicals, high voltage and pathogenic microorganisms
2	Chemical warehouse keepers	Working in closed and confined space, and in contact with toxic chemicals.

XXXVIII. CUSTOMS BRANCH

No.	Occupation or work	Working conditions
	Class-IV working conditions
1	Operating goods and luggage scanners	Working under impact of radiation and electromagnetic field.
2	Operating imported/exported container scanners	Working under impact of radiation and electromagnetic field.
3	Vessel supervisors.	Working outdoor, and under impact of noise and electromagnetic field.
4	Supervising container depots.	Working outdoor, and under impact of noise and electromagnetic field.
5	Supervising aircraft stands in international airports	Working outdoor, and under impact of noise and electromagnetic field.
6	Using customs speedboats and diesel boats for patrols and prevention of smuggling at sea (captains, first mates, chief engineers, crewmembers).	Working under impact of waves, wind, noise, tremor and heat; static working posture; working in frequent contact with gasoline and oil
7	Training and using detection dogs to detect drugs, weapons, explosives and prevent smuggling and illegal transport of goods across the border	Working in frequent contact with sources of pathogens from detection dogs, wastes, and pathogenic bacteria
8	Analyzing, classifying exported and imported goods (working in laboratories, contacting and using chemicals).	Working in frequent contact toxic chemicals, noise and chemical dust.
9	Keeping and preserving chemicals serving the analysis and classification of exported and imported goods	Arduous work; working under impact of toxic chemicals, and chemical dust.

XXXIX. AUTOMOBILE AND MOTORCYCLE PRODUCTION

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Melting and pouring metals.	Working in dusty, hot, noisy environment with toxic gases; intensive work.
	Class-IV working conditions
1	Performing arc welding or gas welding in motorcycle manufacture.	Requiring prompt movements; static working posture; carrying heavy objects throughout the shift; working under impact of toxic gases
2	Moving chassis and engines in motorcycle production line.	Requiring prompt movements; arduous work; static working posture; constantly bending the body.
3	Test-driving motorcycles outdoor.	Outdoor and stressful work; working under impact of noise, dust and toxic gases.
4	Processing and collecting paint sludge	Working in frequent contact with organic solvents; static working posture; transporting heavy objects during the shift.
5	Checking and forming vehicle chassis in motorcycle production line.	Requiring prompt movements; static working posture; constantly bending the body.
6	Operating shot blasting machines in automobile and motorcycle manufacture	Working under impact of toxic gases, partial tremor; static working posture; bending and carrying heavy objects.
7	Operating metal degating machines	Working under impact of dust, heat, noise, toxic gases, partial tremor; static working posture; bending and carrying heavy objects.
8	Operating machines to coat paint mould surfaces	Working under impact of dust, heat, noise and organic solvents; static working posture; bending the body.
9	Spraying paint in the automobile, motorcycle production line.	Hazardous work; working in frequent contact with organic solvents
10	Operating metal punching machines.	Monotonous work; optical strain; working under impact of loud noise and tremor.
11	Mixing paint in automobile and motorcycle manufacture	Working in frequent contact with organic solvents; constant movements; transporting heavy objects during the shift.
12	Classifying and treating wastes.	Manual work; working under impact of high temperature and in frequent contact with toxic substances.
13	Dispensing fuel and operating reformulated gasoline systems	Arduous work; working in frequent contact with gasoline and oil in excess of permissible limits; static working posture.
14	Mixing sand for making moulds.	Arduous work; working under impact of heat, toxic gases, dust, noise, partial tremor; static working posture; bending the body.
15	Breaking moulds	Arduous work; working under impact of heat, dust and tremor; static working posture.
16	Die casting of aluminum, copper.	Working under impact of heat, dust, tremor, toxic gases, noise; static working posture; bending and carrying heavy objects.
17	Dry grinding and cleaning castings.	Working in contact with dust, tremor and noise; static working posture; bending
18	Operating oil paint driers.	Working in hot environment; facing high risk of fire and explosion; working under impact of thermal radiation, and in frequent contact with solvents
19	Operating anti-rust paint driers.	Working in hot environment; facing high risk of fire and explosion; working under impact of thermal radiation, and in frequent contact with solvents.
20	Operating gloss painting chambers	Working in frequent contact with organic solvents; static working posture; carrying heavy objects during the shift.
21	Driving cranes and repairing molds	Working in hot environment, and under impact of toxic gases, dust, noise; intensive work; static working posture; bending the body.
22	Operating and maintaining welding equipment in motorcycle production line.	Working under impact of loud noise and toxic gases; stressful work; static working posture.

XL. ARCHIVES

No.	Occupation or work	Working conditions
	Class-IV working conditions
1	Directly performing storage works at storing warehouses/ rooms, or storage technical workshops.	Working under impact of dust, chemicals, molds and fungi, and harmful microorganisms.

XLI. NATURAL RESOURCES AND ENVIRONMENT

No.	Occupation or work	Working conditions
	Class-VI working conditions
1	Surveying, measuring and drawing maps of natural resources at sea and on islands	Arduous and dangerous work; frequently working at sea, and under impact of bad weather, tremor and noise.
2	Diving to take research samples, collect information about natural conditions and seabed environment.	Arduous and dangerous work; static working posture; working under impact of high pressure.
	Class-V working conditions
1	Operating ships for surveying natural resources and environment at sea and on islands	Arduous, dangerous and stressful work; frequently working at sea; working under impact of bad weather and noise; stressful work.
2	Performing seabed drilling operations (on jack-up rigs, buoys, ships, vessels)	Outdoor and stressful work; working under impact of noise and tremor.
3	Performing monitoring of natural conditions, dynamics, environment and ecology of sea.	Outdoor and stressful work; working under impact of noise and tremor.
4	Measuring spectroscopy of gamma-rays on ships.	Outdoor and stressful work; working under impact of noise and tremor.
5	Conducting marine geophysical surveys by ships (seismism, magnetic, gravity, sonar, eletromagnetism).	Outdoor and stressful work; working under impact of noise and tremor.
6	Conducting geophysical surveys in radioactive zones in water resources sector.	Working outdoor in highlands; a lot of travel; working under impact of radiation.
7	Conducting well logging in water resources sector.	Extremely dangerous work; working in contact with high-intensity unsealed radioactive sources.
8	Investigating water resources in highland, forest, island and border regions, and at sea.	Working outdoor, in complex terrains; muddy workplace; arduous work; working under impact of bad weather, noise and tremor.
9	Working out routes for preparing maps of water resources, monitoring of water resources, searching for water sources at remote, highland, border regions, and on islands.	Working outdoor; arduous and dangerous work; constantly moving in high and sloping mountainous regions.
10	Monitoring and taking samples of radioactive environment, sediments, dioxin/furan, and other toxic chemicals.	Working outdoor, at steep and dangerous regions; manual work; a lot of travel; working in contact with toxic chemicals.
11	Carrying out analysis of environmental parameters of oil, water, gas, radioactive, sediment, sewage sludge, hazardous waste, dioxin/furan and other toxic chemicals.	Working in direct contact with chemicals; working under impact of radiation rays and noise.
12	Performing monitoring of water resources in remote, highland, border or island regions.	Working outdoor; arduous and stressful work; constantly moving; stressful work.
	Class-IV working conditions
1	Performing monitoring in coastal regions (measuring magnetic variations during both day and night, monitoring tidal fluctuations, gravimetric reference stations, measuring and connecting geodetic points serving marine investigation projects).	Outdoor and stressful work; working under impact of noise and tremor.
2	Operating drillers to extract water.	Working outdoor; arduous work; muddy workplace; static working posture; working in contact with chemicals contained in bentonites.
3	Operating drilling rigs or trucks of at least 7,5 tonnes to extract water.	Dangerous work; working under impact of tremor and noise.
4	Analyzing and testing physical – mechanical features of soil & rock, material physical – mechanical features, and physical chemistry of water.	Working in frequent contact with dust and toxic chemicals.
5	Performing monitoring of water resources at monitoring stations in flat or midland areas.	Working outdoor; arduous work; constantly moving.
6	Selecting, classifying, maintaining, repairing or restoring materials stored at National Center for Water Resources Planning and Investigation.	Working in frequent contact with CO and formaldehyde.
7	Taking/ pouring laboratory water for doing researches on water resources.	Working outdoor; manual and arduous work.
8	Pumping water into/from boreholes.	Working outdoor; manual and arduous work.
9	Instructing and inspecting monitoring techniques at monitoring stations and points in mountainous and island regions.	Arduous work; a lot of travel.
10	Performing monitoring of water-flow rate and hydrologic factors at water resource monitoring stations in mountainous regions.	Arduous and dangerous work.

XLII. RUBBER

No.	Occupation or work	Working conditions
	Class-V working conditions
1	Spraying pesticides for rubber plantations	Working outdoor; arduous and hazardous work; working in contact with pesticides in excess of permissible limits
2	Harvesting rubber latex	Working outdoor; arduous and dangerous work; working under impact of pesticides
3	Processing rubber latex	Working in a wet place; manual and extremely arduous work; working under impact of loud noise and toxic chemicals such as ^NH3^{, acetic acid, formic acid}
4	Soaking rubber timber into chemicals for preventing termites and woodworms	Manual and arduous work; working under impact of toxic chemicals such as Borax, Boric, f-Clean, etc.
	Class-IV working conditions
1	Vulcanizing rubber products.	Working in contact with high temperature, chemicals and unpleasant odors for a long time; facing high risk of thermal burns.
2	Planting and caring rubber trees	Outdoor, manual and arduous work; static working posture; working under impact of dust and pathogenic microorganisms
3	Driving vehicles transporting rubber latex	Arduous, stressful, noisy, shaking and dangerous work; Cleaning rubber latex tanks daily; static working posture; working in contact with rubber late and toxic chemicals (acids). Working in contact with rubber latex.
4	Protecting lots of rubber trees	Frequently patrolling within the lot, under bad weather conditions; facing risk of being attacked by rubber latex thieves
5	Rubber tapping managers (team leaders)	Working in the same environment as rubber tapping workers; works are less arduous than those of workers.
6	Loading rubber latex in rubber plantations	Working in a wet place; manual and extremely arduous work; selecting and unloading rubber latex; working under impact of toxic chemicals such as NH3, formic acid, etc.
7	Repairing and maintain electromechanic systems in rubber latex processing plants	Working under impact of chemicals such as acids and bases, waste lubricants and unpleasant odors from rubber latex; static working posture.
8	Driving lifting equipment in rubber latex processing plants	Working in frequent contact with chemicals, unpleasant odors from rubber latex
9	Protecting rubber latex processing plants	Daily contacting unpleasant odors from rubber latex; working in the same environment with rubber latex processing workers.
10	Quality control staff	Working in frequent contact with chemicals, and rubber latex
11	Logging, sawing and cutting rubber timber in plantations by mechanical equipment and portable sawmills	Outdoor and arduous work; working in hot and wet environment with limited lighting, loud noise and tremor; working in contact with harmful microorganisms.
12	Sawing and splitting rubber timber in workshops by mechanical equipment (sawing machine, circular saw)	Working under impact of loud noise, tremor and sawdust. Facing risk of saw blade fractures.
13	Operating steam boilers for drying rubber timber	Boilers are subject to periodical inspection. Working with high temperature; facing risk of incidents and toxic chemicals.
14	Laminating, refining rubber latex for producing rubber products	^{Arduous and hazardous work; working in contact with high temperature, dust, SO2, H2S in excess of permissible limits.}
15	Treating sewage in rubber latex processing plants.	Working outdoor and in contact with toxic chemicals. Working in place with many dangerous lakes and deep ditches. Working in frequent contact with toxic chemicals used in sewage treatment; working at night shifts according to operation of the rubber latex processing plant.

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Article 1. List of arduous, hazardous and dangerous occupations and works, and extremely arduous, hazardous and dangerous occupations and works

XXI. PRODUCTION OF BRICKS, CERAMICS, STONES, SAND, GRAVEL, AND CONSTRUCTION GLASS AND MATERIALS

XXIII. LAND SURVEY

XXXVI. FOOD PROCESSING

XLI. NATURAL RESOURCES AND ENVIRONMENT

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