Again this lie. Department of Labor does NOT require employers to enforce any schedules. Some employers do, but they might as well just make a button "check in

Again this lie. Department of Labor does NOT require employers to enforce any schedules. Some employers do, but they might as well just make a button "check in" / "check out", available any time. DoL is fine with that. A waiter can have an agreement with their boss to work whenever they like. Boss most certainly disagree, but it's boss's decision to enforce schedules. DoL doesn't care. Boss can as well agree and put a whiteboard and let waiters check in / check out by writing on it any time. Same as Uber/Lyft can make the buttons in the app (they already do). Of course, Uber/Lyft can, at their will, enforce the fixed schedules. But it will be obviously bad for their business. And no one requires them to do it, so naturally it would be beneficial to them to not enforce any fixed schedules.