What is the difference between regulations for argicultural employment and other employment?
What are employment age restrictions?
What are the rules about parents hiring children?
What are regulations about minors and jobs deemed hazardous?
This site by the U.S Department of Labor on Youth and Labor tells about the general laws of child labor. It has several suptopic links to information such as: age requirements, statistics, employment by parents, international child labor regulations, and resources for young workers, among other links.