Uber, the ride-hailing company that’s going public this week, faces increasing controversy, including a threatened work stoppage in several cities today by drivers protesting low pay. Add a potential lawsuit in Little Rock to the list.

North Little Rock lawyer Chris Burks provided a copy last night of a federal lawsuit he says will be filed today. It argues that drivers are lured by unfulfilled promises of higher pay. It says drivers should be paid overtime for work in excess of 40 hours a week.

Uber will argue that the drivers are independent contractors. But the suit contends hired the drivers, paid them and dictated ‘their work schedules, duties, protocols, applications, assignments and employment conditions, and kept records regarding their employment.”