This is fairly common for hotels (especially "Budget Inns"). If you have at least 1 hour a night with nothing to do (or more), the excuse is that you are allowed a "working meal break" of sorts. So if you get a check-in during your break you have to pause your break to take care of them, but the time spent with them is added after you are done working again. Sure, you may not leave the property, but you may do anything you want (as long as guests do not see).
If you don't feel that's fair, you can take it up with an attorney but it's just something I've gotten use to working Audit: