Cal. Ins. Code § 11755
No person, insurer, rating or advisory organization shall willfully withhold information from, or knowingly give false or misleading information to, the commissioner or to any rating organization, which will affect the rates, rating systems or premiums for workers' compensation insurance and employer's liability insurance incidental thereto and written in connection therewith.
In the event of the refusal by any insured employer to permit an audit or an examination provided for in subdivision (f) of Section 11750.3, the commissioner shall, upon the verified petition of the rating organization concerned, take such action as the commissioner may be authorized to take pursuant to and subject to the provisions of this code and of the Government Code.
Ca. Ins. Code § 11755