A Marriott owned hotel is under investigation by the California Labor Commissioner’s office after the union, representing cleaning staff, brought numerous allegations against hotel management and its third-party staffing agency. Marriott workers in multiple cities are currently on strike. In Chicago, the company is being sued for not paying workers properly. In California, the union has made claims that Marriott is exploiting undocumented workers. Hotel management insists that the allegations being made by the union are false, and are an attempt to increase bargaining power.
See "Marriott Faces California Labor Inquiry as Workers Strike", Paige Smith, Bloomberg Law, October 19, 2018