| International Occupational Hygiene Modules |
|---|
| W501 Measurement of Hazardous Substances (core) |
| W502 Assessment and Control of the Thermal Environment |
| W503 Assessment and Control of Noise (core) |
| W504 Assessment and Control of Asbestos |
| W505 Control of Hazardous Substances (core) |
| W506 Ergonomics |
| W507 Health Effects of Hazardous Substances (core) |