Koppers, Inc. v. Kelvin Trotter, Nathane Davis, Lonzo Allen, and Ken Piggee

Summary

The court affirmed certification of a class of hourly employees alleging that Koppers failed to pay for time spent donning and doffing protective equipment and walking to and from workstations. It held that Koppers's common compensation policy presented common liability questions, while individualized differences primarily concerned damages and did not defeat predominance or superiority. The court found no abuse of discretion in the circuit court's certification order.