Cal. Ins. Code § 742.42

The provisions of this code governing domestic incorporated insurers, their business, and their contracts shall, so far as applicable and not inconsistent, govern multiple employer welfare arrangements subject to this article and the business and contracts of these multiple employer welfare arrangements, except that these multiple employer welfare arrangements, their business, and their contracts shall not be subject to Article 14.7 (commencing with Section 1067) of Chapter 1 of Part 2 of Division 1. There shall be a rebuttable presumption that any provision of this code is applicable to multiple employer welfare arrangements.