Teamster members working at Marathon Petroleum's Detroit refinery have voted to ratify a seven-year collective bargaining agreement, three months after workers walked off the job, the union said on Sunday, in a post on X.

Over 200 Teamsters at Marathon's Detroit refinery had called for the strike on Sept. 4 after months of pay and safety-related negotiations and mediations with the refiner yielded no results. The prior contract expired in January 2024.

Marathon Petroleum could not be immediately reached for comment outside business hours.

Marathon representatives and the Teamsters had several negotiating sessions under a federal mediator since workers went on strike.

The 140,000 barrel-per-day (bpd) Detroit refinery is one of Marathon's 13 refineries with approximately 2.9 million bpd of crude oil refining capacity.