The case involves two-dozen people who worked at a former Sara Lee Corp. factory near Zeeland. Attorney Matt Turner said the company should have paid the workers for putting on and taking off boots and equipment, before and after their shifts.
A jury in Grand Rapids federal court ruled in favor of the workers last week, although a financial award hasn't been determined.
Sara Lee spun off Hillshire Brands in 2012, and the Chicago-based company now owns the factory.
Hillshire spokesman Matthew Pakula said the company isn't commenting because the case is in court.