In the wee hours of the morning, more than 200 workers are dispatched to some 130 sites.

Both the STM and the union said on Thursday they could not provide more details about the tentative deal.

Quebec's administrative labour tribunal has ruled that work slowdowns by STM maintenance workers are illegal.

Quebec's administrative labour tribunal has ruled a surprise strike by STM maintenance workers was illegal.

Montreal's public transit authority is seeking an injunction at Quebec's labour tribunal to prevent unionized maintenance workers from striking.

Union president Gleason Frenette said the 2,400 workers he represents fear work-life balance will disappear.