The union representing General Motors Canada workers says its Ontario plants could get back up and running early next week at the earliest.
On Wednesday, United Auto Workers and General Motors announced it had reached a tentative deal as the ongoing strike of U.S. workers hit Day 31.
The strike has left Canadian plants, such as in Oshawa and St. Catharines, dormant as there have been no parts to ship to the facilities.
While Unifor President Jerry Dias said it's good news, operations will depend on what U.S. workers decide to do leading up to ratification vote.
"If in fact the UAW members will go back to work during the ratification process, then I expect our assembly plants will likely be up and running sometime early next week," he said.
"But if in fact, they're staying off the job, the whole ratification process could take a good week."
Regardless of when American plants start up again, it'll still take a few days for the parts to make their way up north.
Dias said he was made aware of the tentative deal Wednesday morning before the news broke.
"It has to come to an end and sooner is always better than later, but the proof will be in the pudding, we have to see what the details are," he said.
Correction: Two-thirds of the St. Catharines plant were impacted by the UAW strike, not the whole plant.