September 12, 2026

The Third Schedule – List of Occupational Diseases | Code on Social Security, 2020

THE THIRD SCHEDULE

[See sections 2(51), 36(1), 74(1), (3), (5), 131(5), 132 and 152(2)]

LIST OF OCCUPATIONAL DISEASES

PART A

Sl. No.Occupational diseaseEmployment
1Infectious and parasitic diseases contracted in an occupation where there is a particular risk of contamination(a) all work involving exposure to health or laboratory work; (b) all work involving exposure to veterinary work; (c) work relating to handling animals, animal carcasses, part of such carcasses, or merchandise which may have been contaminated by animals or animal carcasses; (d) other work carrying a particular risk of contamination.
2Diseases caused by work in compressed airAll work involving exposure to the risk concerned.
3Diseases caused by lead or its toxic compoundsAll work involving exposure to the risk concerned.
4Poisoning by nitrous fumesAll work involving exposure to the risk concerned.
5Poisoning by organo phosphorus compoundsAll work involving exposure to the risk concerned.

PART B

Sl. No.Occupational diseaseEmployment
1Diseases caused by phosphorus or its toxic compoundsAll work involving exposure to the risk concerned.
2Diseases caused by mercury or its toxic compoundsAll work involving exposure to the risk concerned.
3Diseases caused by benzene or its toxic homologuesAll work involving exposure to the risk concerned.
4Diseases caused by nitro and amido toxic derivatives of benzene or its homologuesAll work involving exposure to the risk concerned.
5Diseases caused by chromium or its toxic compoundsAll work involving exposure to the risk concerned.
6Diseases caused by arsenic or its toxic compoundsAll work involving exposure to the risk concerned.
7Diseases caused by radioactive substances and ionising radiationsAll work involving exposure to the action of radioactive substances or ionising radiations.
8Primary epitheliomatous cancer of the skin caused by tar, pitch, bitumen, mineral oil, anthracene, or the compounds, products or residues of these substancesAll work involving exposure to the risk concerned.
9Diseases caused by the toxic halogen derivatives of hydrocarbons (of the aliphatic and aromatic series)All work involving exposure to the risk concerned.
10Diseases caused by carbon disulphideAll work involving exposure to the risk concerned.
11Occupational cataract due to infra-red radiationsAll work involving exposure to the risk concerned.
12Diseases caused by manganese or its toxic compoundsAll work involving exposure to the risk concerned.
13Skin diseases caused by physical, chemical or biological agents not included in other itemsAll work involving exposure to the risk concerned.
14Hearing impairment caused by noiseAll work involving exposure to the risk concerned.
15Poisoning by dinitrophenol or a homologue or by substituted dinitro-phenol or by the salts of such substancesAll work involving exposure to the risk concerned.
16Diseases caused by beryllium or its toxic compoundsAll work involving exposure to the risk concerned.
17Diseases caused by cadmium or its toxic compoundsAll work involving exposure to the risk concerned.
18Occupational asthma caused by recognised sensitising agents inherent to the work processAll work involving exposure to the risk concerned.
19Diseases caused by fluorine or its toxic compoundsAll work involving exposure to the risk concerned.
20Diseases caused by nitroglycerin or other nitroacid estersAll work involving exposure to the risk concerned.
21Diseases caused by alcohols and ketonesAll work involving exposure to the risk concerned.
22Diseases caused by asphyxiants, carbon monoxide and its toxic derivatives, hydrogen sulphideAll work involving exposure to the risk concerned.
23Lung cancer and mesotheliomas caused by asbestosAll work involving exposure to the risk concerned.
24Primary neoplasm of the epithelial lining of the urinary bladder or the kidney or the ureterAll work involving exposure to the risk concerned.
25Snow blindness in snow bound areasAll work involving exposure to the risk concerned.
26Diseases due to effect of heat in extreme hot climateAll work involving exposure to the risk concerned.
27Diseases due to effect of cold in extreme cold climateAll work involving exposure to the risk concerned.

PART C

Sl. No.Occupational diseaseEmployment
1Pneumoconioses caused by sclerogenic mineral dust (silicoses, anthraoosilicosis, asbestosis) and silico-tuberculosis provided that silicosis is an essential factor in causing the resultant incapacity or deathAll work involving exposure to the risk concerned.
2BagassosisAll work involving exposure to the risk concerned.
3Bronchopulmonary diseases caused by cotton, flax hemp and sisal dust (Byssinosis)All work involving exposure to the risk concerned.
4Extrinsic allergic alveolitis caused by the inhalation of organic dustsAll work involving exposure to the risk concerned.
5Bronchopulmonary diseases caused by hard metalsAll work involving exposure to the risk concerned.
6Acute Pulmonary oedema of high altitudeAll work involving exposure to the risk concerned.