More than 4,600 General Motors workers across Ontario are being asked to make a decision that reaches far beyond wages and benefits. Ratification meetings are taking place August 29 and 30 for tentative agreements covering GM operations in Oshawa, Ingersoll, St. Catharines and Woodstock, with workers voting amid one of the most uncertain periods Canada’s auto sector has faced in decades.
The proposed contracts preserve the economic pattern Unifor established with Ford while adding commitments aimed directly at the future of GM’s Ontario footprint. Most notably, GM plans a C$144-million investment to bring next-generation heavy-duty GMC Sierra production to Oshawa. At CAMI Assembly in Ingersoll, where vehicle production has been idled, the agreement offers protection against an immediate closure or sale. Hanging over both commitments is an escalating Canada-U.S. tariff dispute that could dramatically change the economics of building vehicles north of the border.
More Than 4,600 Workers Have the Final Say
Unifor reached the tentative agreements with GM on August 22 after negotiations that formally began August 10. They cover approximately 4,600 represented employees at Oshawa Assembly, CAMI Assembly in Ingersoll, the St. Catharines Propulsion Plant and the Woodstock Parts Distribution Centre. Unifor’s bargaining committee unanimously endorsed the package, followed on August 28 by unanimous support from local union leadership. Members began receiving the full details at ratification meetings over the August 29–30 weekend, with results expected after all votes are counted.
The workforce is concentrated heavily in communities where GM’s decisions have an outsized economic impact. When bargaining began, Unifor listed roughly 2,750 members in Oshawa, 1,050 at the idled CAMI operation, 700 in St. Catharines and 110 in Woodstock. Around 30% of the unionized GM workforce was on layoff at the beginning of negotiations. That gives the vote an unusual dimension: many members are not simply weighing improvements to an existing job, but trying to judge how much security the agreement provides in an industry where production schedules can change abruptly.
The Ford Pattern Sets the Economic Benchmark
Unifor entered the GM negotiations with an unusually clear benchmark because Ford workers had already ratified a three-year agreement in July. The union says the GM settlement secures the pattern established at Ford, an important principle in Detroit Three bargaining because the first agreement typically becomes the economic floor for subsequent negotiations. The Ford contract delivered annual general wage increases of 3%, renewed cost-of-living adjustments, pension and benefit improvements, bonuses and stronger income-security provisions.
The Ford deal also provides useful context for what GM workers are evaluating. Full-rate Ford production wages are scheduled to reach $50.20 an hour by the end of that agreement, while skilled-trades rates rise to $62.71. Eligible Ford workers received a $10,000 productivity and quality bonus, alongside additional payments for some laid-off employees. Unifor has described its GM package as providing meaningful improvements in income, benefits and job security. For workers who have endured layoffs and production uncertainty, however, the value of those economic gains is closely connected to another question: whether enough vehicles and components will continue to be built in Ontario to sustain those jobs.
Oshawa Wins a C$144-Million Sierra Commitment
The most concrete product commitment disclosed ahead of the vote is in Oshawa. Under the tentative agreement, GM plans to spend C$144 million to prepare the plant to assemble the next-generation heavy-duty GMC Sierra. Oshawa already produces Chevrolet Silverado pickups, making the addition of another high-profile truck nameplate strategically significant. Heavy-duty pickups are among the most important and profitable vehicles sold by Detroit automakers, and additional product gives a plant more protection against fluctuations affecting a single model.
The commitment is particularly meaningful because Oshawa’s recent history has demonstrated how quickly fortunes can change. The facility was previously closed to vehicle assembly before GM revived production as part of a broader Canadian investment program. GM said earlier this month that it has invested approximately C$3.3 billion in Canadian manufacturing since 2020. Workers therefore have experienced both sides of the industry cycle: closure fears followed by a major restart. The Sierra commitment does not remove future trade risks, but C$144 million in new tooling and production work gives Oshawa something unions consistently seek in bargaining—a specific product allocation backed by capital rather than a general statement of support.
CAMI Gets Breathing Room, Not Yet a New Vehicle
The situation at CAMI Assembly is more fragile. GM ended production of its Chevrolet BrightDrop electric delivery vans at the Ingersoll facility in October 2025 after manufacturing had already been suspended for months. The company said the commercial electric-van market had developed more slowly than anticipated, while regulatory changes and the elimination of U.S. tax credits made the business more difficult. CAMI had been transformed into Canada’s first full-scale EV assembly plant, making the BrightDrop cancellation an especially difficult reversal for employees and the surrounding community.
The new agreement does not appear to provide CAMI with an immediate replacement vehicle. Instead, Reuters reported that GM pledged not to immediately close or sell the Ingersoll assembly plant. That distinction matters. Keeping the facility intact preserves the possibility of a future product allocation and prevents a permanent decision while North American vehicle strategy remains unsettled. For approximately 1,050 Unifor members associated with CAMI when negotiations began, the commitment offers time rather than certainty. Their longer-term security will depend on whether GM identifies another economically viable program capable of bringing meaningful production back to Ingersoll.
Tariffs Could Change the Economics of the Oshawa Commitment
The new contract is being voted on against a trade backdrop that neither GM nor Unifor can control. Canadian-made vehicles have been subject since 2025 to U.S. automotive tariffs that generally apply a 25% levy to non-U.S. content in qualifying vehicles. More recent negotiations between Ottawa and Washington sought relief from those measures, but talks broke down with disagreements that included treatment of medium- and heavy-duty vehicles—the very category that matters to Oshawa’s future truck production.
President Donald Trump has also threatened to increase tariffs on Canadian cars, trucks, automotive parts and steel to 50% beginning January 1, 2027. The threatened increase has not erased GM’s proposed Oshawa investment, but it creates an obvious commercial risk. A Canadian plant can secure wages, machinery and a future vehicle allocation through collective bargaining, yet still find its competitiveness altered by government policy. That is why product commitments have taken on greater importance in this round of bargaining. Workers are looking for evidence that automakers intend to keep investing despite an unpredictable border, not merely promises that depend on the trade environment remaining favourable.
Canada’s Auto Industry Is Exceptionally Exposed to the U.S.
The tariff threat carries unusual weight because Canadian vehicle production remains overwhelmingly tied to American customers. Federal data show that more than 90% of Canadian-made vehicles and about 60% of Canadian-made automotive parts are exported to the United States. Canada produced more than 1.2 million passenger vehicles in 2025, while the broader automotive manufacturing industry supports roughly 125,000 direct jobs. Statistics Canada estimates that U.S. demand accounted for 76.4% of payroll employment in automobile and light-duty vehicle manufacturing in 2024.
Trade figures demonstrate the scale of that dependence. Canadian exports of motor vehicles, bodies and parts to the United States were worth about C$67.8 billion in 2025. More than 93% of Canadian motor-vehicle exports went south of the border that year. Those numbers help explain why a tariff dispute can reach quickly from Washington into lunchrooms in Oshawa or households in Ingersoll. Even when a contract provides higher pay and stronger benefits, the underlying employment ultimately depends on vehicles remaining competitive in the market where most of them are sold.
Job Security Has Become as Important as the Paycheque
Detroit Three negotiations traditionally attract attention because of hourly wages, pensions and bonuses. In 2026, product allocation is arguably just as consequential. Unifor identified investment commitments, specific products and production timelines as major bargaining priorities before negotiations began. The union was responding to a manufacturing environment already marked by tariffs, plant downtime, EV-market adjustments and decisions by automakers to reassess where future vehicles should be assembled.
That context explains the different forms of job security appearing in the GM settlement. Oshawa receives a tangible new vehicle and a C$144-million investment. CAMI receives protection against an immediate sale or closure while its future is evaluated. St. Catharines and Woodstock remain part of the broader master agreement, protecting workers tied to propulsion, logistics and parts distribution. Those outcomes are not identical, because each facility faces a different business case. For an employee considering the ratification ballot, the calculation therefore goes beyond the next wage increase. It also involves whether the agreement places a particular facility in a stronger position when GM makes its next round of North American investment decisions.
A Yes Vote Would Shift Unifor’s Attention to Stellantis
If GM workers ratify the agreements, Unifor can move to the final stage of its 2026 Detroit Three bargaining strategy. Ford was selected first to establish the pattern, GM followed, and Stellantis is expected to become the union’s next focus. That sequence matters because preserving a common pattern limits the ability of individual automakers to compete for Canadian investment partly by lowering labour standards. It also allows bargaining to focus increasingly on company-specific product and plant commitments once the broad economic framework has been established.
For GM’s Ontario workforce, however, ratification would mark the beginning rather than the end of the larger test. The Sierra investment still has to move from bargaining documents to an operating assembly program. CAMI still needs a viable future product. Ottawa and Washington still have to determine whether their escalating tariff conflict can be brought under control. A collective agreement can provide three years of wage, benefit and employment protections, but it cannot completely insulate a deeply integrated Canadian manufacturing industry from trade policy. That is the central tension surrounding this weekend’s vote: the proposed deal gives workers more certainty inside GM just as uncertainty outside the company is increasing.
