Stelco to Idle Hamilton Finishing Operations, Laying Off Hundreds as U.S. Tariffs Squeeze Canadian Steel

What happened

Stelco Holdings Inc. announced on Monday, September 28, 2026, that it will indefinitely idle the finishing operations, its cold-rolled and coated lines, at its Hamilton Works plant in Hamilton, Ontario, with the wind-down expected to begin on October 9, according to CP24. United Steelworkers Local 1005 confirmed that 350 employees at the Hamilton plant will be laid off, and union president Ron Wells told media the union expects about 350 production employees to lose their jobs. Stelco said the move could affect "as many as 500 Stelco employees" and framed it as a step taken "in the face of continued market uncertainty and prolonged injury to Stelco's business resulting largely from steel imports into Canada," and to "ensure the survival" of the company amid U.S. tariff pressure and declining demand. The company said total steel production will not be affected, though there will be a "change in product mix, with a higher concentration of hot rolled steel products," and that job opportunities at its Lake Erie Works in Nanticoke, Ontario will be offered to Hamilton employees, with "a significant number" expected to be absorbed there. The announcement came the same day U.S. President Donald Trump announced plans for Mesabi Metallics to build a US$15 billion steel plant in Iowa producing 10 million tons per year, which would be the first U.S. mega-steel plant in more than 60 years.

Why it matters

The layoffs land at a company that Ohio-based Cleveland-Cliffs acquired in a $3.4-billion deal completed in November 2024, and they follow a summer of escalating trade pressure. Washington imposed a 50 per cent tariff on Canadian steel imports on August 22, and U.S. sectoral tariffs on Canadian steel, aluminum, copper and autos range as high as 50 per cent. Cleveland-Cliffs chairman and CEO Lourenco Goncalves warned in July that without further trade protections "the future competitiveness of our galvanizing lines in Hamilton is at risk," a statement that now reads as a preview of the idling decision. The move compounds a string of losses in the Canadian steel sector, following job cuts at Algoma Steel and ArcelorMittal operations that Conservative Leader Pierre Poilievre referenced in his response. For Hamilton, a city whose industrial identity is tied to Stelco, the loss of 350 to as many as 500 jobs, even with redeployment offers to Nanticoke, represents a significant economic blow. The episode also sharpens the political fight over how Ottawa and Queen's Park respond to U.S. protectionism, with both levels of government now publicly trading statements about who did or did not offer the company support, and with the sector caught between American tariffs on the one side and import competition into Canada on the other.

How it is being covered

According to ground.news, 33 outlets are carrying the story, with a left/centre/right split of 64/32/4 per cent, and factuality ratings are strong, with 27 of 28 rated outlets in the high or very high tiers. The coverage skews heavily toward left-leaning and centrist outlets, and ground.news flags a blindspot on the right, where only 4 per cent of the coverage sits. The Epoch Times carried the company's framing that the closure affects up to 500 employees and cited market uncertainty, while much of the broader coverage has centred the union's 350 figure and the political reactions.

What to watch

Watch whether the wind-down proceeds as planned on October 9 and how many Hamilton employees take up positions at Lake Erie Works, since Stelco said only that "a significant number" are expected to be absorbed there. Watch for further detail on the federal offer that Industry Minister Mélanie Joly's office says Stelco rejected, and whether Ottawa or the company discloses more about what was proposed. Watch Ontario's response in practice, including the expanded POWER Centre in Hamilton, whose funding was increased nearly 50 per cent, the province's $30-billion tariff relief and support plan, and the Buy Ontario procurement approach that Economic Development Minister Vic Fedeli's office cited. Watch also whether Goncalves or Cleveland-Cliffs makes further statements about the Hamilton galvanizing lines, and whether Poilievre or other federal parties press the government on steel-sector strategy. Finally, watch the interaction with U.S. trade policy, including any movement on the 50 per cent steel tariff and the ripple effects of the Iowa plant announcement on North American steel capacity.

The political reactions

The announcement drew immediate responses from all three levels of government and the federal opposition. Ontario Economic Development Minister Vic Fedeli's office said the Ford government will "use every tool we have to help affected workers," citing the POWER Centre in Hamilton, whose funding was increased nearly 50 per cent, along with the $30-billion tariff relief and support plan and a Buy Ontario procurement approach. Federal Industry Minister Mélanie Joly's office said Ottawa had offered financial support to sustain operations, but that "the company has rejected these practical proposals and continue with layoffs is extremely disappointing." Conservative Leader Pierre Poilievre called the layoffs "another devastating blow for Canadian workers, their families, and our steel industry," placing them alongside recent job losses at Algoma Steel and ArcelorMittal. Premier Doug Ford had already clashed with Stelco's owners in August 2025, accusing the chairman of "signing away" Canadian steel to the United States and supporting President Trump's tariffs. The company, for its part, has pointed to import pressure and market conditions as the driving factors behind the idling decision.

By the numbers

Source snapshot