It is and you can sue. I sued a company in small claims in SF for a week's pay because they refused to pay me because I took another offer after a week of being

It is and you can sue. I sued a company in small claims in SF for a week's pay because they refused to pay me because I took another offer after a week of being there. Mind you, this was at-will employment, though not the nicest thing to do, I know. I fought it in court and the judge awarded me the pay. On appeal, the appeal judge cut it to about half for no reason. I never actually collected as that would have required going to court yet again (for the third and possibly a fourth time) to discover their assets (since I didn't have a check from them I didn't know their bank) and then have the state put in an order for withdrawing money. Anyway, I found out later by searching public records that this company had been sued in small claims a number of times and lost just that year. The moral of the story is to look up future potential employers' court records like you'd do a background check on a potential girl/boyfriend. Wait people don't do that to potential girl/boyfriends?