Teamsters members working at Marathon Petroleum's Detroit refinery will go on a strike starting Wednesday after months of pay and safety related negotiations with the company did not yield results, the union said.
Marathon said it does not expect the strike to impact operations at the facility.
Marathon's Detroit refinery has a crude oil refining capacity of 140,000 barrels per day, processing sweet and heavy sour crude oils into products such as gasoline and distillates.
It employs about 273 Teamsters, 95% of whom authorised the strike, the union said. Marathon did not immediately say how many people it employed at the refinery.
