In general, Pennsylvania teenagers must be 15 to seek employment unless they work as farm hands, caddies, entertainers or news carriers. In the case of 15-year-old teenagers, employment cannot interfere with attending school, according to the Pennsylvania Department of Labor and Industry.
Minors under age 14 are allowed to work on farms but must be employed by the farmer. Children can work as news carriers at age 11 and as caddies at age 12. For each industry, employers must follow specific rules concerning the number of hours minors are permitted to work, the amount of weight or equipment they can carry and the time of day they can work. Depending on their age, minors must obtain an employment certificate or work permit, notes the Pennsylvania Department of Labor and Industry.