Public Service Alliance of Canada

The Public Service Alliance of Canada (PSAC; French: Alliance de la Fonction publique du Canada, AFPC) a Canadian public sector labour union. It is the largest union in the Canadian federal public sector. PSAC members work in every province and territory, and also work abroad in embassies and consulates.
Many of PSAC's some 200,000 members work for the federal public service, crown corporations, or agencies as immigration officers, fisheries officers, food inspectors, customs officers, national defence civilian employees, and the like.