Unifor members approve new three-year contract with GM Canada

Deal includes C$1.1 billion in investments across Ontario plants

Members of Unifor, the union representing 4,600 General Motors employees in Canada, ratified a new three-year labor agreement with the automaker, the union said Sunday. The pact covers workers at GM’s Oshawa, St. Catherines, and Woodstock plants in Ontario.

Unifor said 80.5% of members at those three facilities voted for the agreement. Workers at the Woodstock plant covered by a separate contract approved the deal by a wider margin, with 96.5% voting in favor, the union said.

The agreement includes C$1.1 billion (US$791 million) in GM investments in Canada’s auto industry, according to Unifor. The largest new commitment is C$144 million to add production of the next-generation Heavy-Duty Sierra pickup truck at the Oshawa plant.

GM will direct another C$215 million to assemble next-generation transmissions in St. Catherines, with that work expected to begin in late 2029, the union said.

The automaker had previously committed C$691 million, according to Unifor, to support sixth-generation V8 engine production in St. Catherines and $63 million to stamping and other upgrades in Oshawa.

Unifor National President Lana Payne said in a statement: “GM is making these investments in both its highly skilled Canadian workforce and facilities at a crucial time, as our domestic auto industry is under siege by the Trump Administration.”

GM Canada President Jack Uppal said in a statement: “The new agreements include meaningful improvements to wages, benefits and job security, and recognize the valuable contributions of our represented employees while helping sustain good-paying jobs that have long been a cornerstone of Canada’s automotive industry.”