Medical Examination Schedule under Singapore WSH (Medical Examination) Regs
Source: https://sso.agc.gov.sg/SL/WSHA2006-S516-2011
| Occupational Exposure | Types of medical examinations | Pre-placement medical examinations requirment | Frequency for periodic medical examinations |
|---|---|---|---|
| arsenic or any of its compounds | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| arsenic or any of its compounds | Urine arsenic examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| arsenic or any of its compounds | Liver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimations | Not later than 3 months after the date employment commenced | NA |
| arsenic or any of its compounds | A full size chest x‑ray examination | Not later than 3 months after the date employment commenced | NA |
| cadmium or any of its compounds | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| cadmium or any of its compounds | Blood cadmium estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| cadmium or any of its compounds | Urine Beta2-microglobulin estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| Inorganic lead | Clinical examination | Not later than 3 months after the date employment commenced | Once every 6 months |
| Inorganic lead | Blood lead estimation | Not later than 3 months after the date employment commenced | Once every 6 months |
| Inorganic lead | Haemoglobin | Not later than 3 months after the date employment commenced | Once every 6 months |
| Organic lead | Clinical examination | Not later than 3 months after the date employment commenced | Once every 6 months |
| Organic lead | Urine lead estimation | Not later than 3 months after the date employment commenced | Once every 6 months |
| manganese or any of its compounds | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| manganese or any of its compounds | Urine manganese estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| mercury or any of its compounds | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| mercury or any of its compounds | Urine mercury estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| benzene | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| benzene | Urine tt-muconic acid or urine s‑phenylmercapturic acid estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| benzene | Haemoglobin estimation and full blood count | Not later than 3 months after the date employment commenced | Once every 12 months |
| benzene | Peripheral blood film | Not later than 3 months after the date employment commenced | Once every 12 months |
| organophosphates | Clinical examination | Not later than 3 months after the date employment commenced | Once every 6 months |
| organophosphates | Red blood cell acetylcholinesterase estimation | Not later than 3 months after the date employment commenced | Once every 6 months |
| perchloroethylene | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| perchloroethylene | Urine trichloroacetic acid estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| perchloroethylene | Liver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimations | Not later than 3 months after the date employment commenced | NA |
| trichloroethylene | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| trichloroethylene | Urine trichloroacetic acid estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| trichloroethylene | Liver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimations | Not later than 3 months after the date employment commenced | NA |
| vinyl chloride monomer | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| vinyl chloride monomer | Liver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimations | Not later than 3 months after the date employment commenced | Once every 12 months |
| asbestos | Clinical examination | Not later than 3 months after the date employment commenced | Once every 36 months |
| asbestos | A full size chest x‑ray examination | Not later than 3 months after the date employment commenced | Once every 36 months |
| raw cotton | Clinical examination | Not later than 3 months after the date employment commenced | Once every 12 months |
| raw cotton | Lung function tests (FEV1 and FVC) before and after 6 hours of exposure to cotton dust on the same day | Not later than 3 months after the date employment commenced | Once every 12 months |
| silica | Clinical examination | Not later than 3 months after the date employment commenced | Once every 36 months |
| silica | A full size chest x‑ray examination | Not later than 3 months after the date employment commenced | Once every 36 months |
| Excessive noise | An audiometric examination (where the air conduction is abnormal, to include bone conduction testing and auroscopic examination) | Not later than 3 months after the date employment commenced | Once every 12 months |
| Work in a compressed air environment | Clinical examination | Not later than 3 months after the date employment commenced | Working Pressure <1bar = Once every 3 months Working Pressure <1bar = Every month not more than 3 days prior to re‑employment in a compressed air environment if an employee has — (i) not worked in a compressed air environment for more than 14 consecutive days OR (ii)suffered from a ear, nose, throat or respiratory infection OR (iii)suffered from any illness or injury necessitating absence from work for more than 3 consecutive days |
| Work in a compressed air environment | Height, weight and body fat estimation | Not later than 3 months after the date employment commenced | Once every 12 months |
| Work in a compressed air environment | An audiometric examination (where the air conduction is abnormal, to include bone conduction testing and auroscopic examination) | Not later than 3 months after the date employment commenced | Once every 12 months |
| Work in a compressed air environment | Test in a lock | Not later than 3 months after the date employment commenced | NA |
| Work in a compressed air environment | A full size chest x‑ray examination | Not later than 3 months after the date employment commenced | NA |
| Work in a compressed air environment | Radiographic examination of shoulder, hip and knee joints | Not later than 3 months after the date employment commenced | Once every 12 month, and just before stopping work whichever is earlier in respect of working pressures at or exceeding one bar |
| Work in a compressed air environment | Electrocardiogram for workers who are 35 years of age and above | Not later than 3 months after the date employment commenced | Once every 12 months |
| Work in a compressed air environment | Lung function tests (FEV1 and FVC) | Not later than 3 months after the date employment commenced | Once every 12 months |