OP - no one here can know if your boss will find out about this. We don't know what anyone might or might not do. Your question has been answered in that if they find out, they can terminate you. They can terminate you at any time for any reason not protected by law (ie age, sex, religion) unless you have an employment contract or CBA to the contrary. It's just like you could quit at any time for any reason unless there was a contract to the contrary.

