Cal. Labor Code § 6409.5

(a) Whenever any local public fire agency has knowledge that a place of employment where garment manufacturing operations take place contains fire or safety hazards for which fire and injury prevention measures have not been taken in accordance with local fire and life safety ordinances, the agency may notify the Division of Occupational Safety and Health. This referral shall be made only after the garment manufacturing employer has been given a reasonable amount of time to correct violations. (b) Whenever the Division of Occupational Safety and Health has knowledge or reasonable suspicion that a place of employment where garment manufacturing operations take place contains fire or safety hazards for which fire and injury prevention measures have not been taken in accordance with local fire and life safety ordinances, the division shall notify the appropriate local public fire agency. (c) Whenever the Division of Occupational Safety and Health receives a referral by a local public fire agency pursuant to subdivision (a) which informs the division that a place of employment where garment manufacturing operations take place is not safe or is injurious to the welfare of any employee, it shall constitute a complaint for purposes of Section 6309 and shall be investigated. (d) Whenever a local public fire agency receives a referral by the Division of Occupational Safety and Health pursuant to subdivision (b) which informs the local public fire agency that a place of employment where garment manufacturing operations take place is not safe or is injurious to the welfare of any employee, the local public fire agency may investigate the referral at its discretion. (e) (1) If the Division of Occupational Safety and Health acquires knowledge that the garment manufacturing employer is not currently registered, it shall notify the Division of Labor Standards Enforcement. (2) Local public fire agencies may make referrals of individuals not registered as garment manufacturers to the Division of Labor Standards Enforcement. (3) Whenever the Division of Labor Standards Enforcement is informed by the Division of Occupational Safety and Health or by a local public fire agency that a garment manufacturing employer is unregistered, the Division of Labor Standards Enforcement shall take measures it deems appropriate to obtain compliance.