Cal. CIV § 2782.96

If an owner, builder, or general contractor obtains a wrap-up insurance policy or other consolidated insurance program for a public work as defined in Section 1720 of the Labor Code or any other project other than residential construction, as that term is used in Title 7 (commencing with Section 895) of Part 2 of Division 2, that is put out for bid after January 1, 2009, the following shall apply:

(a) The total amount or method of calculation of any credit or compensation for premium required from a subcontractor or other participant for that policy shall be clearly delineated in the bid documents.

(b) The named insured, to the extent known, shall disclose to the subcontractor or other participant in the contract documents the policy limits, known exclusions, and the length of time the policy is intended to remain in effect. In addition, upon written request, once available, the named insured shall provide copies of insurance policies to all those who are covered by the policy. Until such time as the policies are available, the named insured may also satisfy the disclosure requirements of this subdivision by providing the subcontractor or other participant with a copy of the insurance binder or declaration of coverage. Any party receiving a copy of the policy, binder, or declaration shall not disclose it to third parties other than the participant’s insurance broker or attorney unless required to do so by law. The participant’s insurance broker or attorney may not disclose the policy, binder, or declaration to any third party unless required to do so by law.

(c) The disclosure requirements in subdivisions (a) and (b) do not apply to an insurance policy purchased by an owner, builder, or general contractor that provides additional coverage beyond what was contained in the original wrap-up policy or other consolidated insurance program if no credit or compensation for premium is required of the subcontractor for the additional insurance policy.