If you are 14 or 15 years old, you will be restricted as to when you can and cannot work.  During the school year, 14 and 15 year olds can work up to 3 hours a day with a maximum of 18 hours per week.  Also, you can only work between the hours of 7am and 7pm.  On the weekends you can work up to 8 hours a day. 

During the summer, 14 and 15 year olds can work up to 8 hours a day with a maximum of 40 hours a week and you can only work between the hours of 7am and 9pm. 

Of course, you cannot work during school hours. 

For more information on child labor laws and regulations, check the S.C. Department of Labor, Licensing and Regulation website.