I don't think the government should regulate any private sector job, as they couldn't regulate a pee wee soccer game. Private businesses should have the right to pay what they feel is a "fair wage" to their employees, including overtime.
As for temporary jobs like ones you're mentioning, I think anyone who is willing to work the hours should be rewarded for it. I agree with some form of unemployment, but that typically creates lazy people and a lazy person not contributing to society who is more than capable, is worthless.