Cal. Lab. Code § 2658.1
Every person who, without having in his possession a then valid industrial homework license issued to him by the Division of Labor Standards Enforcement, negligently fails to prevent articles or materials under his custody or control from being taken to a home for manufacture by industrial homework is guilty of a misdemeanor. Possession, control or custody of articles or materials for the purpose of manufacture by industrial homework by a person other than the owner or operator of a factory shall be presumptive evidence that said owner or operator has negligently failed to prevent articles or materials under his custody or control from being taken to a home for manufacture by industrial homework, where it is established that such owner or operator is entitled to possession, control or custody of such articles.
Ca. Lab. Code § 2658.1