Legal Question in Business Law in California

Your ex-supervisor may be a victim too. You'll have to do research on the organization itself - such as who backed it, whether it is permanent or ad hoc, legit or fly-by-night. They come in all varieties. Brace yourself for being out of luck.

Send a notice/invoice in writing, to all names/addresses that you have, starting w/your supervisor to the organization for whom your supervisor works to the name of the party on the paychecks you have already received. The Invoice/Notice should be clear and specific about how much is owed and what the services provided were, and should include a specific deadline for payment. You still might not get paid, but you'll need written documentation if you decide to file a legal claim in small claims court or anywhere else. Don't rely on voicemails or oral promises. Good luck.

Yes, file a claim for unpaid wages with the Labor Commissioner, or file a lawsuit in court. Feel free to contact me for legal help if serious about doing so.