The traditional American business hours are 9:00 a.m. to 5:00 p.m., Monday to Friday, representing a workweek of five eight-hour days comprising 40 hours in total.

How long is a working day UK?

You can't work more than 48 hours a week on average - normally averaged over 17 weeks. This law is sometimes called the 'working time directive' or 'working time regulations'. You can choose to work more by opting out of the 48-hour week. If you're under 18, you can't work more than 8 hours a day or 40 hours a week.

How long is a full time work day?

In the United States, the "standard workweek" is generally considered to be 40 hours, with employees working five days a week, for eight hours per day. Some employers consider 37.5 hours to be full time, giving 30-minute unpaid lunch breaks each day, while others give an hour and consider 35 hours to be full-time.