Final answer:
The biggest labour union in Canada is the Canadian Labour Congress (CLC). It represents over three million workers and works towards advocating for workers' rights and improving working conditions.
Step-by-step explanation:
Labour Union in Canada: The Canadian Labour Congress (CLC)
The Canadian Labour Congress (CLC) is the largest and most influential labour union in Canada. It represents over three million workers from various sectors and regions of the country. The CLC was created in 1956 and is an umbrella organization that brings together national and international unions to advocate for workers' rights, fair wages, and improved working conditions.
The CLC operates across Canada, with headquarters in Ottawa, Ontario. It organizes campaigns, negotiates collective agreements, and engages in political lobbying to promote workers' interests.