STM maintenance workers launching month-long overtime strike in December

C’était une fonctionnalité réclamée à grands cris par de nombreux usagers depuis plusieurs années.

Montreal commuters should brace themselves for possible strike-related transit delays next month.

The maintenance worker union has filed a notice that an overtime strike will take place from Dec. 9, 2025 to Jan. 11, 2026.

The Société de transport de Montréal (STM) said bus and metro service will be maintained. “However, given the duration of the strike, some impacts may be observed on the service,” notably with fewer vehicles in service, the agency said in a message on its website on Thursday evening.

Paratransit service will not be affected by the strike.

The STM said a hearing will be held before the Administrative Labour Tribunal in the coming days to determine the level of essential services that will be maintained during the overtime strike and that more details will be announced at a later date.

Earlier this month, the maintenance worker union suspended what was supposed to be a month-long strike that would have only kept service running only during peak hours in the morning, afternoon, and late evening. Negotiations are still underway to reach a deal.

STM service was completely shut down for one day on Oct. 31 due to another strike, this time by the bus drivers and metro operators. That union had threatened to go on strike for another two days -- Nov. 15 and 16 -- but it was called off at the last minute after reaching a tentative deal with the STM.