You should consult with an employment attorney:1) You can clearly sue for any unpaid wages (whether  the company would have the money to pay--i.e. whether they telling the truth about not having money--is a different issue, and one you must consider, but you have the legal right to the money, and therefore could sue).2) It may well be considered improper or illegal termination to fire someone for stating a claim for wages lawfully owed him or her, so you may also have a cause of action for forward looking wages (at least for some time) or reinstatement.From what you write, it is worth you time to consult with an attorney. Good luck.