
Michigan’s an at-will employment state, meaning that the employment between an employee/employer can be ended at will by either party, provided the reason isn’t on the basis of a protected class. Given that the reason for their firing isn’t on the basis of protected class, it’s certainly fair. While a business can refuse service to a customer, it’s important to remember that right applies to *businesses,* not individuals representing a business
Is it legally justified? Technically yes. The business has the legal right to refuse service to anyone for any non-legally protected reason. You as an employee do not have the right to do so without any consequences from your employer. Completely legal termination. Fair in the eyes of the law. Fair as in socially acceptable? Let’s just say I don’t see that business being successful in Michigan for a hot minute