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).
If you are aged 17 and 18, you can work up to a maximum of 8 hours per day and 40 hours per week. You must have a break after 4.5 hours of work and a break of 12 consecutive hours after an 8 hour day.