McDonald’s workers in 12 U.S. cities walked off the job Tuesday to protest what they say is a continuing problem of sexual harassment and violence in the company’s stores.

Several hundred workers were expected to participate in Chicago, Houston, Miami, Detroit and other cities, according to Fight for $15 and a Union, a labor group that organized the strikes.

At least 50 workers have filed charges against McDonald’s alleging verbal and physical harassment over the last five years.

The latest labor action was spurred by a lawsuit filed last month by a teenage McDonald’s employee and her parents against McDonald’s and one of its franchisees in Bethel Park, Allegheny County.

According to the lawsuit, the teen was harassed and later raped by a manager who was hired in January 2021, despite the fact that he had served time in prison for sexually assaulting a 10-year-old girl and was listed in Pennsylvania’s sex offender registry.