Overtime pay is governed by each individual state and depends on the job status whether or not the employee is part time or full time. It may also depend on how big or small the company is.
In my work, I get overtime after 8 hours work in one day. However, it isn't like that for the subs. They don't get overtime until they work over 40 hours in a week and in that way, they can be worked 10 hours a day for four days and not get paid any overtime. Of course that will give them three days off during the week and I can't tell you how many unions have been trying to get this schedule. Anyway, if I were to put in 10 hours a day for four days, I would get 32 hours of regular pay and 8 hours of overtime.
BTW, speaking of sick days, I have accumulated 2250 hours of sick leave that I can take. I am not one who abuses sick leave. But get this, a couple of years back, I took 40 hours of FMLA to take care of my wife after some surgery she had. A couple of months later, our new station manager took anyone who had taken anything other than annual leave into her office for a discussion. When my turn came around, she first told me how much leave time I have accumulated over my entire time with the PO and since I have used some of that time, she asked if it was all necessary! I smirked and said of course it was necessary, especially the last leave I took. She frowned and said to see if I could do better!! While that was stupid on her part, here's more. She talked to two supervisors and berated them for taking sick leave. One of them had surgery and the other had a heart attack. Now while all of this sounds very stupid, the woman who was doing all the talking about using sick leave had...get this, only 48 hours of leave herself...and she had been working for the PO for over 25 years.
Sorry for that long story, but I wanted Andy to see how the rest of the work force goes.