The latest news and top stories on the Canadian Union of Public Employees. A prominent Canadian-based trade union, the Canadian Union of Public Employees (CUPE) is dedicated to improving the quality of life for workers in Canada. Its headquarters are in Ottawa, Ontario. CUPE is Canada’s largest union representing approximately 700,000 workers across various sectors including healthcare education municipalities and transportation. The union’s main areas of activity involve collective bargaining for improved working conditions advocating for fair pay and benefits and promoting progressive labour and social legislation. The CUPE is currently involved in a labour dispute with Air Canada over contract negotiations for flight attendants.