General Motors workers in Ontario have approved a three-year labour agreement that does more than raise pay. It locks in more than C$1 billion in Canadian manufacturing commitments and gives GM’s Oshawa Assembly Plant a next-generation product at a moment when the North American auto industry is being reshaped by tariffs and political pressure.
Unifor members covered by the main GM agreement voted 80.5% in favour, while workers at the idled CAMI Assembly plant in Ingersoll approved their agreement by 96.5%. The centrepiece for Oshawa is C$144 million earmarked for production of a next-generation heavy-duty GMC Sierra. St. Catharines will receive major transmission investment, while CAMI workers receive extended income protections even though the plant still lacks a confirmed replacement vehicle.
Workers Give the Three-Year Deal a Strong Mandate
The ratification closes a critical round of bargaining covering more than 4,600 Unifor members at GM operations in Oshawa, St. Catharines, Woodstock and Ingersoll. Members covered by the GM Company of Canada master agreement voted 80.5% in favour, while the separate CAMI agreement passed with 96.5% support. Those margins give the union and company a relatively clear mandate to implement a contract negotiated against an unusually uncertain backdrop for Canadian vehicle manufacturing.
That uncertainty matters because roughly 30% of the GM workers represented by Unifor were on layoff when bargaining began, according to the union. CAMI Assembly remained idled after GM discontinued BrightDrop electric commercial vans, while Oshawa’s truck operation faced the broader threat created by U.S. tariffs. Against that backdrop, workers were voting not simply on wage increases but on whether the agreement offered enough investment and job protection to make the next three years more predictable.
Oshawa Wins a Next-Generation GMC Sierra
The most important product commitment for Oshawa is C$144 million for the next generation of the heavy-duty GMC Sierra. The investment strengthens the plant’s position inside GM’s North American truck network and gives workers a specific future product rather than a general promise to maintain operations. GM Canada says the Sierra commitment builds on C$343 million in previously announced spending for next-generation truck manufacturing and plant enhancements.
Taken together, the company says planned investment at Oshawa approaches C$500 million. That is significant for a plant that was once scheduled to end vehicle assembly entirely before GM reversed course and restarted manufacturing in the early 2020s. Oshawa has since become an important Canadian truck hub. Securing a next-generation Sierra provides another layer of continuity and signals that the company expects the facility to remain part of its heavy-duty pickup strategy even as cross-border trade rules become harder to predict.
The C$1-Billion Figure Includes Both New and Previously Committed Money
The headline investment package is substantial, but the numbers require some context. Unifor says the agreements secure more than C$1 billion in product and facility commitments. That total includes C$144 million for the Sierra program in Oshawa, C$215 million for a next-generation transmission program in St. Catharines and C$691 million previously committed for production of GM’s sixth-generation V8 engine in St. Catharines. Another C$63 million in previously announced Oshawa stamping and parts-distribution improvements is also protected.
In other words, the entire C$1-billion-plus total should not be interpreted as money announced for the first time during this bargaining round. A major achievement for the union was converting earlier announcements into contractual commitments alongside genuinely new investment. GM Canada separately says its planned spending in Oshawa and St. Catharines will total approximately C$1.4 billion over the next three years, illustrating the broader scale of its current Canadian manufacturing program.
St. Catharines Lands a Major Transmission Program
Oshawa captured the most visible vehicle announcement, but St. Catharines also emerged with a major industrial commitment. GM plans to invest C$215 million to manufacture a next-generation transmission at the Ontario powertrain facility, with production anticipated to begin in late 2029. Unifor describes St. Catharines as the planned single source for that transmission, which could give the facility a particularly important position in GM’s future manufacturing network.
The new program sits alongside the previously announced C$691-million investment for GM’s sixth-generation V8 engine. Reporting on the tentative agreement indicated the transmission work could support approximately 250 jobs when production begins. Together, the engine and transmission commitments make St. Catharines a bridge between current combustion-engine demand and whatever mix of powertrains GM ultimately sells late in the decade. For workers, the timing matters: securing programs scheduled years into the future provides a longer planning horizon than a contract built only around existing production.
Workers Secure Annual Raises, COLA and Large Bonuses
The agreement also delivers immediate improvements to compensation. Unifor says workers will receive wage increases of 3% in each year of the three-year contract. By the end of the agreement, full-rate production workers are scheduled to earn C$50.20 an hour, while skilled trades workers will reach C$62.71 an hour. The contract also renews cost-of-living adjustments, providing some protection if inflation erodes the purchasing power of those negotiated increases.
Eligible workers will receive a C$10,000 productivity and quality bonus, along with a C$2,000 bonus scheduled for December. Retiree health provisions were improved as well, including increases to the universal health-care allowance and an extension of that benefit to surviving spouses. The package reflects the unusual nature of auto bargaining: employees evaluate headline hourly wages alongside pensions, health benefits, bonuses, product commitments and plant security. In this round, investment and future work were particularly important because layoffs were already affecting a sizable share of the membership.
CAMI Gets Protection but Still Does Not Have a New Vehicle
The most difficult part of the agreement is at CAMI Assembly in Ingersoll. The plant has been idle since GM ended production of its BrightDrop electric delivery vans, leaving more than 1,000 workers on layoff. Unlike Oshawa and St. Catharines, CAMI did not emerge from bargaining with a confirmed replacement product or a firm date for restarting vehicle manufacturing. That makes its overwhelming 96.5% ratification vote notable.
Instead, the agreement creates a bridge while GM searches for future work. Unifor says the company committed to continue pursuing opportunities for CAMI during the contract and to give the plant first consideration for Canadian Armed Forces defence-related work if GM successfully secures an applicable contract. The Income Maintenance Plan for eligible laid-off employees is extended until May 2028. Those provisions reduce some immediate financial pressure, but they do not eliminate the central question hanging over Ingersoll: what, exactly, will eventually move down CAMI’s assembly line?
For Laid-Off CAMI Workers, the Deal Is Bittersweet
The human consequences of that uncertainty are visible in Ingersoll. The Detroit Free Press reported that laid-off CAMI worker Peggy Falkingham described the agreement as bittersweet, reflecting the contrast between major investments awarded elsewhere and the continued wait for new work at her own plant. It is an experience shared by hundreds of households whose employment became tied to an electric commercial-vehicle program that ultimately failed to secure a sustainable future.
The agreement attempts to provide options for workers who may not be able or willing to wait indefinitely. Reporting on the contract says GM will offer a one-time C$50,000 retirement or separation incentive to as many as 35 eligible CAMI production and maintenance employees, with the process expected to be completed by July 2027. Most workers, however, remain dependent on GM finding another use for the facility. Their situation is an important reminder that billion-dollar investment announcements can coexist with deep uncertainty at another plant owned by the same automaker.
Tariffs Have Turned Product Decisions Into Trade-Policy Decisions
The agreement was negotiated while Canada’s auto industry faced escalating pressure from Washington. The United States already imposed 25% tariffs affecting vehicle trade, and President Donald Trump has threatened a 50% tariff beginning January 1, 2027. Canada-U.S. trade negotiations have struggled to resolve the dispute, with treatment of automobiles and larger vehicles among the most consequential issues for both sides of the border.
For Oshawa, that makes the Sierra commitment strategically important but does not remove the trade risk. Canadian-built trucks are part of a continental system in which vehicles and components routinely cross the border. A steep tariff can alter the economics of deciding which plant builds which model, even when the underlying factory remains productive. That reality placed product allocation near the centre of Unifor’s bargaining strategy. A contractual commitment gives workers more certainty than an informal plan, although neither a labour agreement nor a capital announcement can completely insulate a plant from a prolonged trade conflict.
Oshawa Remains Important to GM’s North American Truck Footprint
Oshawa’s importance extends beyond the number of people working inside the plant. Barclays analysts cited by Reuters have estimated that approximately 17% of GM’s Chevrolet Silverado production comes from Canada, illustrating how deeply Canadian manufacturing remains connected to the company’s broader pickup-truck business. GM has also said it invested approximately C$3.3 billion in its Canadian manufacturing operations from 2020 through the start of this bargaining round.
The next-generation Sierra commitment strengthens that role. Heavy-duty pickups are among the most commercially significant vehicles sold by Detroit automakers, so keeping Canadian capacity tied to future generations gives Oshawa a meaningful industrial position. It also demonstrates why tariff disputes are so disruptive for the sector: Canadian plants are not isolated suppliers serving only domestic buyers. They form part of an integrated production system supplying one of the world’s largest vehicle markets. Decisions made in Washington can therefore influence factory schedules in Ontario almost immediately.
The Deal Buys Certainty, but It Cannot Remove Every Risk
The ratified agreement gives GM workers several things that were missing when bargaining opened: defined wage increases, large bonuses, protected benefits, specific capital commitments and a confirmed next-generation truck for Oshawa. It also reinforces future powertrain work at St. Catharines. For thousands of employees and suppliers around those plants, that provides a clearer picture of where GM intends to put Canadian capital over the next several years.
What the agreement cannot provide is complete insulation from events outside the bargaining room. The next-generation transmission is not expected until late 2029. CAMI still lacks a replacement vehicle. Most importantly, the North American trade environment remains volatile enough to affect production economics across the industry. The significance of the deal is therefore not that every risk has disappeared. It is that Canadian workers secured concrete products and investment before those risks became even harder to manage — giving Oshawa, in particular, a stronger claim on GM’s next generation of heavy-duty trucks.
