Welcome to the OHAO website.
If you are wondering what an occupational hygienist is and what we do
watch the video below to find out!

The Occupational Hygiene Association of Ontario

The Occupational Hygiene Association of Ontario (OHAO) is the number one resource in Ontario for people with an interest in occupational hygiene.  OHAO has something to offer everyone with an interest in the field of occupational hygiene. All members also receive the OHAO Forum quarterly newsletter, member discounts on job postings and directory listings and the ability to serve on committees and the OHAO Board 

Wondering if an OHAO membership is right for you?
Check out the video below for more details.

Become a member

If you are an occupational hygienist or have an interest in occupational hygiene you need to be an OHAO member!

Join us

OHAO CONSULTANT'S DIRECTORY

Do you require the services of an occupational hygienist? 
Click here for the OHAO Consultant's Directory.

WHAT IS OCCUPATIONAL HYGIENE? 

CLICK HERE TO FIND OUT!

Are you a student interested in occupational hygiene?

Click Here for More Information

Looking for a job in occupational hygiene? 

Looking for your next great employee?

Check out the OHAO Job Posting Page!

Follow OHAO on LinkedIn

Upcoming events

Nominations for the Hugh Nelson Award Open.

Nominate a deserving colleague or fellow member for this prestigious award.

For details and the nomination form click here.

Subscribe to the OHAO Email List

By subscribing to the OHAO email list you are agreeing to receive emails regarding OHAO services and products. 
You may unsubscribe at the bottom of the email at any time.

Subscription form

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

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