overnight pay on out of town trips?

Most companies do not pay beyond the normal working hours as normally you are free during the evenings (your time). There are some instances where a company has paid for overnight but normally that would be a special thing. If working long hours while out of town then yes you should be paid for the extra hours put in but this would depend on your salary arrangement with the company. If you mean for the travel time (getting there at night) well that's a touchy issue in many places. Basically many do not pay wages for travel time past the normal work day (unless agreed to) but do pay the costs of the travel otherwise. It really depends on the company and policy and if there is an agreement as to how much time is paid for. For myself where some trips take me beyond a certain distance I do have to spend the night away but the company does not pay for the 8 hours sleeping. They do pay for all hours travelling and normally all hours working (although there have been some instances of not being paid for work hours, such as fixed price for job).

You should be compensated for travel and during your actual work time. There's no reason you should be paid for sleeping in a hotel, which should already be paid for by your work. I know many people who take business trips, and they are never paid for overnight when they are not working. Often, they will receive an extra stipend, though, and meals will be paid for.

If you travel for work, you get paid for actually working time, travelling time plus per diem (for food) and expenses like hotels, rental cars and plane tickets.

also if he uses his own car there is usually a $.75 per mile charge for wear and tear , gas , and etc .