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).
Age and hours of work. A minor less than 16 years of age. A minor less than 16 years of age may not work: before 7 a.m. or after 9 p.m.* with the exception of a newspaper carrier; for more than 40 hours a week or more than eight hours per 24-hour period*, except in agriculture;