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).
Federal Work Hour Restrictions. Minors 14 and 15 years of age can work: 1  3 hours on a school day. 2  8 hours on a nonschool day. 3  18 hours in a school week. 4  40 hours in a nonschool week.