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).
1 Except for babysitters, no minor under the age of 16 is permitted employment between the hours of 9:30 p.m. and 5:00 a.m. unless the next day is not a school day.  Minors may not work more than 40 hours per week or 8 hours in any 24-hour period unless there is a business emergency.