The negotiations are the last round of bargaining between the Big Three carmakers — Stellantis, Ford and GM — and Unifor, which represents autoworkers at each. And with the backdrop of American tariffs threatening Canada's auto industry, the talks come at a critical juncture.

General Motors will invest C$1.1 billion in Canada's auto sector after a tentative union deal. This investment includes adding a heavy-duty GMC Sierra truck to an Oshawa plant. …

Members of the labor union representing 4,600 General Motors employees in Canada have ratified a new three-year deal that includes wage increases.