First of all most of the labor laws differs state wise. In your case it seems like you have always mentioned to your employer that you are scared that INS might find out that you are working under table or other that kinda stuff where your employers knew that you are scared. You don't have to be scared at all, your employer is also in fault that they hired a person illegally and paying under table. On top of it if it is a corporate then it is against the corporate law to hire anybody and pay them in cash. In United States corporate/employer who hires a illegal employees are in more fault then illegal employees themselves. Your employer is totally threatening you. Why don't you call them and tell them that you are going to the labor department and complaining about the situation. And also mentioned to them that you are also calling their corporate and reporting that you have been paid in cash for a long time and now since you quit they are not paying. Don't be scared...they are just too greedy to pay and trying to get away from that. If you complain to labor department and if they get caught then their business will be shut down. I am sure they don't want that. What benefit would they get by sending you home and shutting down their profitable business. Take my advice-call them and tell them that if you don't get paid then you are calling labor department and their corporate. And if they think it is threatening only then do call labor department as well - even though u are illegal they will provide u a lawyer for free and will go and inquire everything. It is also in your best interest if they are some other people working under table - you will surely win the case. Don't get scared - just believe that you worked for somebody and you need to get paid.