A month-long overtime strike by Montreal transit maintenance workers begins Thursday, raising concerns about possible delays and reduced service during one of the busiest travel periods of the year.

The Syndicat du transport de Montréal (STM) said it will hold an overtime strike from Dec. 11, 2025 to Jan. 11, 2026 targeting the extra hours needed to keep buses and metro trains in service.

While both the metro and bus network will continue to run, the STM says the impact will grow over the coming weeks with potential maintenance backlogs.

In a statement, the agency said the metro will operate on its regular schedule, with trains and buses expected to keep their planned hours.

But as the strike progresses, vehicle shortages are expected due to maintenance delays, which could lead to cu

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