The state of Alabama doesn't have a legal minimum age for babysitters as of May 2015 but it's illegal for children under the age of 16 to work during a typical school day, according to the Labor Law Talk Blog. This rule also applies to kids who are home schooled.
Additionally, the Labor Law Talk Blog states that no laws in Alabama govern the pay that a babysitter under the age of 20 must receive. The only exception is if the babysitter works more than 20 hours a week. Within this criteria, the babysitter must be paid at least the federal minimum wage.