The Professional Institute of the Public Service of Canada (PIPSC) is the largest multi-professional labour union in Canada, representing some 60,000 public service professionals employed at the federal and some provincial and territorial levels of government.

[1] The institute became a bargaining agent following the implementation of the Public Service Staff Relations Act in 1967.

[2] It is the bargaining agent for more than 41 knowledge-based groups and negotiates with 27 different employers in six different jurisdictions.

The institute serves its members with approximately 140 full-time staff in its national office in Ottawa, and regional offices in Halifax, Montreal, Toronto, Winnipeg, Edmonton, and Vancouver.

[3] A 100th anniversary history of the union, by labour historian Jason Russell, was published in 2020 under the title Leading Progress: The Professional Institute of the Public Service of Canada, 1920-2020 (Toronto: Between the Lines, 2020).