a long slender part, such as the portion of a long bone between the wider ends or extremities, the shaft of a hair and the central shaft of a feather.
maximum number of hours for 16- and 17-year-old minors is 4 hours on a school day (6. hours with a special variance), 8 hours on a Friday or any non-school day and not more. than 6 days per week. The maximum number of hours of work for 16- and 17-year-old. minors is 20 or 28 (with the optional special variance).
State Rules. State rules regarding how many hours you can work per day vary considerably from state to state. Some states, like Alabama and California, do not enforce a maximum on the number of hours in a workday. Others, like New Mexico, Oregon and Florida, limit workdays to between 10 and 16 hours per day.