<P> Besides these "big three" there is a long list of smaller unions, some more influential then others . These smaller unions tend to specialize in one profession or economic sector . Next to these specialized unions there is also the Neutral and Independent Union that reject the pillarization that, according to them, the "big three" represent . There is also a small Flemish nationalist union that exists only in the Flemish - speaking part of Belgium, called the Vlaamse Solidaire Vakbond . The last Belgian union worth mentioning is the very small, but highly active anarchist union called the Vrije Bond . </P> <P> Labour unions have existed in Canada since the early 1800s . There is a record of skilled tradesmen in the Maritimes having a union organization during the War of 1812 . Canadian unionism had early ties with Britain . Tradesmen who came from Britain brought traditions of the British trade union movement, and many British unions had branches in Canada . Canadian unionism ties with the United States eventually replaced those with Britain . </P> <P> Collective bargaining was first recognized in 1945, following a strike by the United Auto Workers at the General Motors' plant in Oshawa, Ontario . Justice Ivan Rand issued a landmark legal decision following a strike in Windsor, Ontario, involving 17,000 Ford workers . He granted the union the compulsory check - off of union dues . Rand ruled that all workers in a bargaining unit benefit from a union - negotiated contract . Therefore, he reasoned they must pay union dues, although they do not have to join the union . </P> <P> The post-World War II era also saw an increased pattern of unionization in the public service . Teachers, nurses, social workers, professors and cultural workers (those employed in museums, orchestras and art galleries) all sought private - sector collective bargaining rights . The Canadian Labour Congress was founded in 1956 as the national trade union center for Canada . </P>

Give two reasons why workers should join a trade union