Occupational Hygiene Association of Ontario

Networking Opportunities

OHAO events, both in-person and virtual, offer members and registrants the opportunity to connect with colleagues and other stakeholders to share information and best practices.

Education Opportunities

OHAO offers a wide range of educational opportunities. Whether you need continuing maintenance points for your designation or have an interest in occupational hygiene we have programming for you. OHAO offers in-person and virtual education sessions.

Promoting the Profession

OHAO is always working to promote your profession to the government, other OHS organizations, educational institutions and the general public.

Click Here for the Top Three Reasons to Join OHAO

Choose Your Membership Category Below to Join OHAO Today!

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Associate Member - $80.00 (CAD) Subscription period: 1 year, on: January 1st
Your membership renewal date will be: 1 Jan 2026 No automatically recurring payments An Associate Member shall be any person who has an interest in occupational hygiene and is engaged in any aspect of the field of occupational health and safety. An Associate Member may serve on committees, vote and be elected as a director of the Association in accordance with the Bylaws.

Professional Member - $80.00 (CAD) Subscription period: 1 year, on: January 1st
Your membership renewal date will be: 1 Jan 2026 No automatically recurring payments A Professional Member shall be a person who holds a valid Registered Occupational Hygienist (ROH), Certified Industrial Hygienist (CIH), Registered Occupational Hygiene Technologist (ROHT) or Occupational Health and Safety Technologist (OHST) certificate or a person who has a total of six (6) year’s combined post-secondary education and occupational hygiene work experience. At the time of application, the applicant should be engaged in the practice of occupational hygiene. A Professional Member may serve on committees, vote and be elected as a officer or director of the Association in accordance with the Bylaws.

Student Member - $25.00 (CAD) Subscription period: 1 year, on: January 1st
Your membership renewal date will be: 1 Jan 2026 No automatically recurring payments Student membership is open to any person who has an interest in occupational hygiene and is registered full time in an occupational hygiene, environmental, health or safety related program at a post-secondary institution in Canada.

Occupational Hygiene Association of Ontario (OHAO)
6700 Century Ave, Ste. 100
Mississauga, ON, L5N 6A4
905-567-7196
office@ohao.org