By calling Child Labor Compliance at 1.800.226.2536. During non-school sessions (i.e., summer vacations), minors ages 14 and 15 may work up to eight hours per day, 40 hours per week. A minor aged 14 or 15 years old can work up to 40 hours a week during Spring, Winter, and Summer Break. At what age can a minor work? A minor must be 14 years old to work. Florida law restricts child labor for minors 14 to 17 years of age and prohibits employment of children under 14, with some limited exceptions. As for 14 and 15yearolds, they can legally work up to 8 hours per day (and 40 hours per week) whenever school is not in session. Minors under 14 years old are generally prohibited from working. In South Carolina, it's considered oppressive child labor.