Find a Certified Occupational Hygenist

Occupational hygienists are professionals dedicated to the health and well-being of the worker and the community through anticipation, recognition, evaluation and control of workplace hazards. The Certified Occupational Hygienist (COH) is certified by the AIOH, an internationally recognised organisation.

This certification is an important means for identifying a professional with the right background to help bring solutions to your environmental and occupational health problems.

Our register lists current Certified Occupational Hygienists and is updated on a regular basis however, it is possible that a member who has only recently gained COH status may not yet be listed.

To confirm if an AIOH member holds COH, use the search tool below.a