Contact your state department of labor. This is highly illegal and needs to be stopped. If you are working over 40 hours in a pay week at one job, you deserve overtime for each hour after the first 40. If your employer uses a 2 week pay schedule, make sure that your 40 hours are all in the same week. The case will not be that easy to prove at first. The state will have to observe you working for the entire week and comparing the documented hours on your paycheck.
If he is doing this to several of his employees I suggest that you collectively file a complaint with the state department of labor and with the US Department of Labor.What he is doing is illegal.Good luckJerry-the-bookkeeper