No, you do not: your employer has the right to request ANY number of hours be worked each week (e.g. 60, 80, 100, etc.), and if you refuse to do so, you may be terminated. There is, literally, no upper limit on how many hours you can be made to work each week, other than the physical limit that there are only 168 hours in a week. In addition, you may be fired because you have an issue with your boss or complained about your boss; the law does not give you the right to make complaints or protect you when doing so.