The union representing workers at the automaker’s Windsor and Brampton, Ont. plants had challenged the mandate that Stellantis announced on Oct. 15, 2021.
It says that while the arbitrator ruled the policy was reasonable when put in place, and remains reasonable, new variants of COVID-19 and other factors make the policy unreasonable as of June 25.
Local president Dave Cassidy said in a video message to members that the union would be working with the company on a return to work plan for those who have not been able to work because they had not been vaccinated.
Stellantis spokeswoman LouAnn Gosselin said in a statement that the company was pleased that the arbitrator decided the vaccine policy is reasonable.
She says the company takes seriously its obligation to provide a safe working environment for its more than 9,000 employees in Canada and is carefully reviewing the decision before deciding next steps.
Unifor represents around 315,000 workers in a range of industries across the country, including some at Global News.
— with files from Global News