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About Us

OPSEU represents approximately 155,000 members across Ontario. They are full- and part-time workers, men and women, young and old. They trace their ancestry to all parts of the globe – as diverse a group as you could imagine. Our members work for the Ontario government, inside community colleges, for the LCBO , in the health care sector and they are employed in a wide range of community agencies inside the broader public service.


This point-form history of OPSEU highlights the union's development from 1911 to 2005, from its beginnings as the Civil Service Association of Ontario (CSAO).

OPSEU Constitution

OPSEU’s constitution sets out our fundamental guidelines and principles over which our union is governed.

Board & Bios

Meet the OPSEU Executive Board.  Includes biographies for President Warren (Smokey) Thomas and 1st Vice-President/Treasurer Eduardo (Eddy) Almeida.

Your Home in OPSEU

Find your way around OPSEU and learn how we work on behalf of our 155,000 members.

Privacy Policy

OPSEU's Website Privacy policy related to personal information, email communications from OPSEU, cookies and links to external websites.


The Ontario Public Service Employees Union (OPSEU) is committed to providing a barrier-free environment for all members and stakeholders including employees, job applicants, suppliers, and any visitors who may enter our premises, access our information, or use our services.

OPSEU Logo and Graphics

A selection of downloadable OPSEU Logos and Letterheads in both black and white and in colour.  Includes colour specifications for OPSEU logo.