Membership & Certification


The AIOH is a community of more than 1,500 people who are passionate about safeguarding worker health in Australia. Our membership includes not only occupational hygienists, but also allied professionals such as those working in occupational medicine, occupational health, healthcare, and health and safety. A number of different membership grades are available which reflect various levels of knowledge, experience, and contributions to the profession.

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Achieving the designation of Certified Occupational Hygienist (COH) recognises that you practice in a competent, independent and ethical manner, and shows you are a leader in your field. It is the highest level of professional occupational hygiene expertise by the AIOH and international agencies. The reward for becoming a COH is the personal satisfaction of knowing you have achieved the highest standard in Australia and you are recognised for your knowledge and experience.

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