The North American Free Trade Agreement (NAFTA) is a trilateral concluded in 1994 between Canada, the United States and Mexico. NAFTA offers citizens of the United States and Mexico unique opportunities to work in Canada. Foreigners subject to the provisions of NAFTA may be eligible to work in Canada without the need for a Labor Market Impact Assessment (LMIA) or, in some cases, a work permit.

NAFTA establishes five situations wherein an American or Mexican citizen may be eligible for some sort of facilitated access to Canadian work authorization:

NAFTA Professionals
NAFTA Intra-Company Transferees
NAFTA Investors
NAFTA Traders
NAFTA Business Visitors