Professional Institute of the Public Service of Canada  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. It was founded in 1920. The Institute was founded to protect the interests of professional public employees and became a bargaining agent following the implementation of the Public Service Staff Relations Act (PSSRA) in 1967. The Institute 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, Montréal, Toronto, Winnipeg, Edmonton and Vancouver. PIPSC on Facebook PIPSC on Twitter