
Quoting
eerelations
So here's the best we can do: He can be legally fired for doing this. It is unlikely he will be entitled to UI because he has his own business. His former employer will be legally free to tell his future prospective employers (or pretty much anyone else for that matter) that he did this highly unethical thing. His former employer may sue him over this; whether or not his former employer will prevail in such a lawsuit, we cannot say. But if his former employer does sue him, he will have to spend some considerable amount of money to defend himself in court.