Canada’s final round of Detroit Three auto bargaining has opened with unusually high stakes. Unifor and Stellantis began negotiations on September 1, bringing the union’s 2026 bargaining cycle for roughly 18,900 workers at Ford, General Motors and Stellantis toward its decisive final stage.
The Stellantis negotiations themselves cover 9,140 union members across Canada, including thousands at Windsor Assembly and roughly 2,200 Brampton workers whose plant remains idle. The talks are unfolding just as Washington threatens another major escalation in automotive tariffs and Stellantis considers what to do with Brampton. Wages and benefits remain important, but this round is increasingly about something more fundamental: whether major vehicle programs, investment and well-paid manufacturing jobs will remain in Canada.
Stellantis Is the Last Piece of Unifor’s Detroit Three Bargaining Round
Unifor entered the Stellantis talks with much of its economic bargaining framework already established. The union represents about 18,900 workers across the Detroit Three: 5,150 at Ford, 4,610 at General Motors and 9,140 at Stellantis. Ford went first in the 2026 negotiations, followed by GM, leaving Stellantis as the final automaker to face the pattern. That sequencing matters because Canadian auto bargaining traditionally uses agreements at one company to establish expectations for the others.
Ford workers ratified a three-year agreement containing annual wage increases of 3%, renewed cost-of-living adjustments, pension and benefit improvements, bonuses and investment commitments. GM subsequently adopted the same annual wage pattern while negotiating more than $1 billion in Canadian investment commitments. Stellantis therefore begins negotiations with a relatively clear economic benchmark. The harder argument is likely to involve company-specific commitments — particularly future production. Unifor has made clear that the company’s Canadian manufacturing footprint will be central to whether an agreement is considered acceptable.
Brampton Has Become the Most Difficult Issue at the Table
For approximately 2,200 Unifor members connected to Brampton Assembly, bargaining begins after years of uncertainty rather than a normal production cycle. The plant was idled in December 2023 ahead of a planned retooling project that was expected to prepare the facility for future Jeep Compass production. Stellantis paused the work in February 2025, and later announced that future Compass production would instead be located in the United States. The Brampton workforce has remained on indefinite layoff.
The situation became more serious in August 2026 when Stellantis informed Unifor that it intended to enter discussions with another company about a possible sale of the plant. Unifor said it had not received formal written notice of a closure or sale and noted that its collective agreement requires at least one year of notice. That distinction is crucial. Brampton has not formally been declared closed, leaving the union room to fight for another product mandate. For affected workers, a wage increase means far less without a credible path back to production.
Moving the Jeep Compass to Illinois Changed the Relationship
Brampton’s uncertainty cannot be separated from Stellantis’ much larger push to expand manufacturing in the United States. In October 2025, the automaker announced a US$13-billion investment program designed to increase its U.S. manufacturing footprint over four years. The plan included more than US$600 million to reopen the Belvidere Assembly Plant in Illinois, where Stellantis intends to manufacture the Jeep Cherokee and Jeep Compass, with production expected to begin in 2027.
For Canadian workers, the Compass decision carried particular weight because Brampton had been preparing for that vehicle program. Stellantis’ U.S. expansion was expected to create roughly 3,300 jobs at Belvidere alone, while thousands of Brampton workers remained without production. The contrasting trajectories have become symbolic of the broader investment battle created by U.S. industrial policy and tariffs. Unifor argues that the Compass relocation conflicts with commitments previously made in Canada. As negotiations progress, the union is effectively asking Stellantis to demonstrate that expanding in the United States does not require shrinking its Canadian manufacturing footprint.
Ottawa and Ontario Have Financial Leverage in the Brampton Fight
Brampton is not solely a dispute between a corporation and its union because significant government support was attached to Stellantis’ Canadian transformation plans. In 2022, Stellantis announced a $3.6-billion investment involving its Windsor and Brampton operations. Federal support of up to $529 million and Ontario support of up to $513 million were tied to the broader transition toward electrified vehicle manufacturing. A separate 2023 agreement involving the Stellantis-LG Energy Solution battery project explicitly stated that Stellantis would uphold existing Canadian commitments, including a production mandate in Brampton.
Ottawa later signalled that those commitments carried consequences. After Stellantis cancelled its Brampton production plans, the federal government reduced the company’s annual tariff-remission quota by 50% in October 2025. Government briefing material also indicated that future payments connected with the Brampton and Windsor investment agreement had been paused during a dispute-resolution process. Those measures give the labour negotiations an unusual second dimension: Stellantis is dealing simultaneously with union contractual demands and governments seeking enforcement of previous investment promises.
Windsor Shows Why the Outcome Is Not Simply About Plant Closures
The picture at Stellantis is not uniformly bleak. Windsor Assembly is the company’s largest Unifor workplace in Canada, with roughly 6,400 members included in the 2026 bargaining count. The plant produces Chrysler minivans and the Dodge Charger, giving Canada an important role in both established family vehicles and Stellantis’ multi-energy performance-car strategy. That production makes Windsor a valuable counterweight to the uncertainty surrounding Brampton.
Stellantis announced in late 2025 that Windsor would add a third shift and as many as 1,500 jobs to support demand for the Charger lineup and Chrysler minivans. The company has also described Windsor as an important part of its Canadian operations after major investments in flexible manufacturing. Unifor is nevertheless seeking guarantees around production volumes rather than treating existing activity as sufficient protection. Automotive plants depend on sustained vehicle allocations over multiple model cycles. A facility can be busy today yet vulnerable when the next generation of products is assigned. That is why product commitments can matter as much as headline wage increases.
Smaller Stellantis Facilities Are Also Tied to the Production Fight
While Windsor and Brampton receive most of the attention, the bargaining unit stretches well beyond those two assembly plants. Unifor’s Stellantis membership includes approximately 240 workers at the Etobicoke Casting Plant, about 100 at the Mississauga parts distribution centre and roughly 30 at the Red Deer distribution centre, along with office, clerical, fire and security workers attached to several facilities. In total, the union counts 9,140 Stellantis members, including active workers and members currently on layoff.
These operations illustrate how a vehicle assembly decision can travel through an industrial network. Etobicoke produces cast components used by Stellantis facilities in North America, while distribution centres depend on the company maintaining a large vehicle and parts business. Unifor specifically identified production volumes at both Windsor Assembly and Etobicoke Casting as priorities when talks opened. The concern is straightforward: protecting one assembly plant without maintaining work at associated facilities would leave portions of the Canadian footprint exposed. The union therefore has an incentive to negotiate manufacturing commitments as a connected package rather than as isolated plant-by-plant promises.
Ford and GM Have Raised Expectations for What Stellantis Must Offer
The economic pattern established earlier this summer gives Stellantis workers a concrete comparison. Ford’s agreement provides 3% general wage increases in each year of a three-year contract, renews cost-of-living adjustments and raises full-rate production wages to $50.20 an hour by the end of the agreement. Skilled trades rates rise to $62.71 an hour. Ford also committed hundreds of millions of U.S. dollars to Canadian facilities and established a pathway designed to return laid-off Oakville workers to employment.
GM then matched the 3% annual wage increases while securing Canadian product commitments of its own. Its new agreement includes $144 million for next-generation heavy-duty GMC Sierra production in Oshawa and $215 million for a next-generation transmission program in St. Catharines, alongside previously announced investments. That gives Unifor considerable leverage when it argues that Stellantis should provide not only the established economic pattern but credible Canadian investment. Matching wages is comparatively straightforward. Reaching a satisfactory agreement on Brampton, Windsor and future product allocation could prove substantially more difficult.
Trump’s Tariff Threat Makes Every Canadian Product Decision Harder
The bargaining table is operating inside a trade environment that was almost unimaginable during previous contract rounds. Canada suspended its latest trade negotiations with Washington on August 21 after Prime Minister Mark Carney said last-minute U.S. demands were unfair and economically unacceptable. Days later, President Donald Trump threatened to raise tariffs on Canadian cars, trucks and automotive parts to 50% beginning January 1, 2027. Existing automotive trade barriers have already altered investment calculations across the industry.
Canada is particularly exposed because vehicle manufacturing developed around a deeply integrated continental market. Statistics Canada found that U.S. demand accounted for 76.4% of payroll employment in automobile and light-duty vehicle manufacturing in 2024. More than 93% of Canadian motor-vehicle exports went to the United States. That concentration turns tariffs into a direct factory issue. A Canadian-built vehicle does not need to lose every U.S. customer to become less attractive for future investment; even a substantial increase in cross-border costs can change the economics of where the next model is assembled.
The Broader Auto Labour Market Is Already Showing Strain
Stellantis workers are negotiating after a difficult period for Canadian manufacturing employment. Statistics Canada reported that employment in motor-vehicle-parts manufacturing fell 9.3% between December 2024 and December 2025, while employment in motor-vehicle manufacturing declined 1.3%. More broadly, 50.6% of manufacturing businesses responding to a federal business-conditions assessment in early 2026 said U.S. tariffs had negatively affected their operations during the previous year.
The stakes reach well beyond the employees represented directly in Detroit Three bargaining. Federal industry data show that Canada’s automotive sector directly employed more than 125,000 people in 2024 and indirectly supported roughly 427,000 jobs through suppliers, dealerships, aftermarket businesses and related activity. Canada assembled more than 1.3 million light-duty vehicles that year. That scale explains why the future of a plant such as Brampton attracts attention from municipal, provincial and federal governments. An assembly facility supports skilled trades, logistics companies, parts manufacturers and local spending. Losing production can therefore create effects extending far beyond the plant gates.
September 11 Is the First Major Deadline to Watch
Unifor has set an internal September 11 deadline to reach a tentative agreement with Stellantis, giving negotiators a relatively compressed window to settle both the economic pattern and the company-specific disputes. Existing Detroit Three agreements expire around September 20, but the union’s September 11 target is an internal bargaining deadline rather than a publicly announced strike deadline. It nevertheless creates pressure to determine quickly whether the two sides are moving toward a deal.
A conventional settlement would replicate much of what Ford and GM workers have already secured: wage increases, cost-of-living protection, pension and benefit improvements and income-security provisions. The more consequential test will be what Stellantis is prepared to put behind its Canadian operations. Unifor has identified Brampton’s future, Windsor production volumes and Etobicoke Casting as central priorities from the opening day. In that sense, the negotiations are as much an industrial strategy debate as a labour contract. The final agreement could help determine whether Stellantis expands around two Canadian assembly centres — or enters its next contract with one of them still sitting silent.
