Grubba was among the flood of workers who walked out at MotorCity Tuesday and told us to her knowledge, there were little to no casino employees left inside. DETROIT (WXYZ) - At noon on Tuesday, for the first time in Detroit history, casino union employees walked out of work to strike.īartender at MotorCity Casino Hotel & Union Steward, Allison Grubba, said, 'It’s amazing, to be able to have the power to what we think is right and what we think we deserve.'