If you are not a union according to most state labor boards, yes an employer can force you to work over time. If you are sure about these laws check with the labor board in your state by either website or by contacting them. Yet also with overtime there should be overtime pay which is required to be paid for by your employer. You have choices and you could choose to quit your job. Just be sure
. that before committing to a job to know all of the stipulations of your employment and if overtime is apart of the job description so you avoid any issues.