I didn't fully understand how this worked at the beginning. He told me that it wasn't illegal and that we'd both be making more money that way. Looking back it was very ignorant of me. I worked there nearly a year and in the end he screwed me over. I worked probably 350 hours of overtime for him that he didn't pay overtime rates for, and I know there's probably nothing I can do about that now, but I do want to report his business. How can I go about that?