STM maintenance workers going on strike June 9, union says

A Montreal Metro maintenance worker walks along a station platform during the early hours of the morning in Montreal, Thursday, April 11, 2019. (Graham Hughes/The Canadian Press)

The STM maintenance workers’ union has announced a strike starting on June 9, which could coincide with the Formula 1 Grand Prix in Montreal.

The duration of the strike is not yet known; the union said Thursday that it will be “confirmed in the coming days.”

This is the union’s second attempt to strike at the Société de transport de Montréal (STM), after the court prevented it from going on strike as planned last week.

The maintenance workers’ union wanted to shut down the Metro for a day, providing no essential services for the Metro, only for buses. The Administrative Labour Tribunal refused, ruling that the provision of essential services in this case was insufficient.

This time, the union affiliated with the CSN, which represents approximately 2,400 maintenance workers, has announced a strike next month.

The essential services to be maintained during the strike will have to be assessed by the Administrative Labour Tribunal, which must determine whether the essential services provided would be sufficient to avoid endangering the health or safety of the public.

This report by The Canadian Press was first published in French on May 29, 2025.

By Lia Lévesque, The Canadian Press