Almost all minors under the age of 18 are subject to California's child labor protections. Minors cannot work for more than 3 hours without a 10 minute rest period.Minors are also entitled to minimum wage. Even when school is not in session, there are restrictions. All minors who have not graduated high school or been awarded a certificate of proficiency, must have a valid work permit. In general, the legal working age in California is 14 years old. Minors under this age are generally not allowed to work. Commissioners, Directors, and Secretaries ; California. Stewart Knox Secretary Labor and Workforce Development Agency 800 Capitol Mall, Suite 5000 (MIC-55) Utah law requires employers to report any wages covered under the Utah Employment Security Act and the reason you are not working.