If you're not paid by the hour and not required to be on call (which seems to be the above case), the it's very hard for an employer to argue that you need to b

If you're not paid by the hour and not required to be on call (which seems to be the above case), the it's very hard for an employer to argue that you need to be at home, staring at a monitor just in case. You may feel an urge to behave that way.