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).
Minors under age 18 enrolled in school may work up to 50 hours during any week that school is in session less than 3 days or during the first or last week of the school calendar, regardless of how many days school is in session for the week.