No, You cannot void your nondisclosure agreement: if you do so, you are in breach of the agreement and can be sued. (While is possible that you could defend yourself under a whistleblower statute, that is not a given; and even if you could, you'd still have to deal with being sued. If he is being prosecuted by the state, or sued (e.g. in civil court) by anyone, let the other side request the documentation formally though the legal system. You can, however, sue him for any payment or money he should have made to you but is not--including any tax payments which should be made on your behalf but which he is not making.Your super can sue him if the employer is failing to pay the super; you cannot sue on the super's behalf.