Xerox-owned Affiliated Computer Services Inc. has agreed to pay $4.5 million to settle a class action lawsuit brought by employees who believe they were not paid properly going back to 2005.

The Oregonian reports that the lawsuit, filed in U.S. District Court in Portland in 2009, alleged that ACS failed to pay bonuses as promised and that workers were often delayed from clocking into their shifts on their computers as they searched for a work station or waited to have their passwords reset. Now, as many as 20,000 current and former ACS call center workers in Oregon could be eligible for between $50 and $260 from the settlement.