California Code, Labor Code - LAB § 1296

The Division of Labor Standards Enforcement may, after a hearing, determine whether any particular trade, process of manufacture, or occupation, in which the employment of minors is not already forbidden by law, or whether any particular method of carrying on the trade, process of manufacture, or occupation is sufficiently dangerous to the lives or limbs or injurious to the health or morals of minors to justify their exclusion therefrom.  No minor shall be employed or permitted to work in any occupation thus determined to be dangerous or injurious to minors.  Any determination hereunder may be reviewed by the superior court.