Child Labor Law regulates employment of workers under 16 years of age. The law protects children by:Learn about when children can start working, work permits, and the restrictions on the hours and types of work children can do. Minors aged 14 or 15 may work, but not without first obtaining an Employment Certificate from their local high school or school administration office. One of the primary provisions of Illinois child labor laws is the minimum age for employment. 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. Illinois Child Labor Laws - Occupations Deemed Hazardous to Minors. The bureau investigates and litigates cases involving serious or persistent wage law violations or other significant employment practices. If an employee's tips combined with the wages from the employer do not equal the minimum wage, the employer must make up the difference. Employers must provide a prospective minor employee with a notice of intention to employ for submission to a school issuing officer.