Unifor Ratifies GM Deal Covering 4,600 Ontario Auto Workers

Unifor members have ratified three-year agreements covering more than 4,600 General Motors workers in Oshawa, St. Catharines, Woodstock and Ingersoll. Members covered by the main GM agreement voted 80.5% in favour, while CAMI members approved their agreement by 96.5%, according to the union.

The contracts secure more than C$1 billion in current and previously announced Canadian investment. GM committed C$144 million to add next-generation heavy-duty GMC Sierra production in Oshawa and C$215 million for a next-generation transmission program in St. Catharines, with that work expected to begin in late 2029. Earlier commitments for V8 engine production, stamping and parts-distribution upgrades were also written into the agreement.

The outcome is less certain at CAMI Assembly in Ingersoll, where most workers remain on indefinite layoff. GM agreed to look for opportunities for the plant and to give it first consideration for Canadian Armed Forces work if GM receives such a contract. Eligible laid-off members will receive extended income-maintenance support until May 2028. The agreement does not restart CAMI production.

Workers will receive annual wage increases of 3%, along with renewed cost-of-living protection and negotiated bonuses. For the broader auto sector, however, the investment commitments are the more important signal: GM is preserving planned work in Ontario while cross-border tariffs make North American production decisions harder to predict.

The announcement comes from Unifor, which negotiated the contracts and represents the affected workers. The investment figures and contract details have not been independently reported by Trade Radar, so they should be read as the union's account of the agreement.