Cal. INS § 11751.55

If an insurer, the State Compensation Insurance Fund, a rating organization, or an advisory organization requests an official action by the commissioner under Chapters 2 (commencing with Section 11630), 3 (commencing with Section 11690), or 4 (commencing with Section 11770) of this part which he can lawfully consummate only after a noticed public hearing required by law, the commissioner shall require the request to be in writing and require the payment of five hundred ninety dollars ($590), in advance, as a fee for filing such request. Such fee shall be earned even if the request is denied or is granted in an altered form.