Canadian labor union Unifor has reached tentative collective agreements with General Motors covering approximately 4,600 workers across several Ontario facilities, marking a significant development in the latest round of auto industry labor negotiations.
Unifor announced the agreements on Saturday, saying they apply to members working at GM’s Oshawa Assembly Plant, the CAMI Assembly Plant in Ingersoll, and facilities in St. Catharines and Woodstock.
Unifor National President Lana Payne said the proposed contracts provide substantial improvements in income and benefits for union members. The union did not immediately disclose detailed wage increases or other specific terms contained in the tentative agreements.
Negotiations between Unifor and General Motors began earlier in August as the union sought new contracts for thousands of Canadian auto workers. The GM talks followed Unifor members’ ratification of a separate three-year collective agreement with Ford.
Under the Ford agreement, workers secured wage increases of 3% in each year of the three-year contract. That deal helped establish a benchmark for Unifor’s subsequent negotiations with other major automakers operating in Canada.
The tentative General Motors agreements will now be presented to affected Unifor members for approval. Ratification meetings are scheduled for August 29 and 30, when workers will have an opportunity to review the proposed terms and vote on whether to accept the contracts.
A successful ratification would secure new labor agreements for thousands of GM employees at key Ontario manufacturing operations and remove the immediate risk of a labor dispute between the automaker and its Canadian workforce.
The outcome will also be closely watched across Canada’s automotive sector as Unifor continues to push for stronger wages, benefits and employment protections amid changing conditions in the global auto industry.
General Motors remains a major automotive employer in Ontario, with its Oshawa, Ingersoll, St. Catharines and Woodstock operations playing important roles in the company’s Canadian manufacturing footprint.


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