OHAO Pioneers Honoured

OHAO Pioneers at 2010 Spring Symposium Some of the OHAO Pioneers ...
l-r: George E. Menzies, Donald A. Brown, Ernest Mastromatteo, Hugh M. Nelson, Om Malik, Gyan S. Rajhans

AIHCE 2013

OHAO at AIHce 2013OHAO Board members John Petherick (L) and Altaira Hildebrand (R) at the OHAO booth at AIHce 2013 in Montreal

Hugh Nelson Award

Hugh Nelson Award The Hugh Nelson Award for 2012 was presented at the Spring Symposium to Lorraine Shaw
l-r: Elizabeth Walpac, Lorraine Shaw

Alberto Behar Honoured

Alberto Behar HonouredAlberto Behar congratulated by Jason Hoffman at the 2010 Spring Symposium on the conclusion of his very successful term as OHAO president
l-r: Alberto Behar, Jason Hoffman

OHAO Spring PDC 2013

Spring PDC 2013Attendees at the OHAO 2013 Spring PDC


OHAO 2012 Annual General Meeting Nancy Wilk (OHAO President 2013/14) thanks Paul Bozek for his service as OHAO President 2012/13

Historical Committee

Mission Accomplished! Three members of the Historical Overview Task Force at the 2010 Spring Symposium
l-r: Don Brown, Neil Murray and David Halton

Latest News


Registration is now open for the OHAO Fall 2017 PDC and Symposium The Fall PDC will take place on Wednesday, October 18...

11-09-2017Read more

OHAO has developed a new Mentoring Program.  The goal of this program is to provide opportunities for interactions and ...

29-09-2015Read more

The Consultants Directory has been prepared for persons interested in retaining the services of a consultant in occupat...

17-10-2013Read more

Welcome to the OHAO

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The Occupational Hygiene Association of Ontario (OHAO) represents occupational hygienists and other people interested in health and safety. While the activities of the Association are primarily within Ontario, membership is not limited to those within the province.

Through OHAO, members communicate with each other on a regular basis to increase awareness and learning.

The Association is involved in numerous workshops, seminars and conferences throughout the year. OHAO also co-sponsors conferences and symposia on occupational health topics with other groups with an interest in health and safety. In addition, OHAO schedules an annual vendor exhibition of equipment and related services to ensure members are fully aware of latest developments.

The OHAO newsletter, The OH Forum, mailed quarterly to all members, contains current information on occupational hygiene issues along with a list of workshops, seminars, conferences, and Association activities.

Members represent the Association on advisory boards and standard setting bodies.

OHAO also promotes occupational hygiene through its awards programs.


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