Child Labor Law regulates employment of workers under 16 years of age. The law protects children by: requiring employment certificates.Minors aged 14 or 15 may work, but not without first obtaining an Employment Certificate from their local high school or school administration office. Learn about when children can start working, work permits, and the restrictions on the hours and types of work children can do. However, employers of minors under age 18 must obtain and keep on file proof of the minor's age. This Illinois law enhances restrictions on the employment of minors. Indeed, the Act imposes certain new civil and criminal penalties on violating employers. The Act applies to minors ages 15 and younger. Illinois Child Labor Law requires any child under age 16 who wants to work to obtain an employment certificate from their school's Issuing. Officer. JJ Keller offers federal, state, local, and wage order posters for all 50 states, the District of Columbia, and Puerto Rico.