The Public Service Alliance of Canada (PSAC) is a labor union that represents workers in the federal public service and various other sectors. Founded in 1966, it advocates for the rights and interests of its members, including fair wages, job security, and better working conditions. PSAC is one of the largest unions in Canada, with thousands of members across the country. PSAC engages in collective bargaining with employers to negotiate contracts that benefit its members. The union also provides support through training, resources, and legal assistance. By organizing workers and promoting solidarity, PSAC aims to improve the overall quality of work life for its members.