Michigan Compiled Laws, Chapter 500. Insurance Code of 1956 § 500.4639

Sec. 4639. (1) An association captive insurance company and an industrial insured captive insurance company insuring the risks of an industrial insured group shall comply with the investment requirements contained in sections 910 to 947.  1 Notwithstanding any other provision of this chapter or in chapter 9,  2 the commissioner may approve the use of alternative reliable methods of valuation and rating.

(2) A pure captive insurance company and a special purpose captive insurance company are not subject to any restrictions on allowable investments contained in chapter 9 except that the commissioner may request a written investment plan and may prohibit or limit an investment that threatens the solvency or liquidity of the company.

(3) Only a pure captive insurance company may make loans to its parent company or affiliates and only upon the prior written approval of the commissioner evidenced by a note in a form approved by the commissioner. Loans of minimum capital and retained earnings required to be held by section 4611(1)  3 are prohibited.

(4) Notwithstanding the provisions of sections 4663 and 4665,  4 the assets of 2 or more protected cells may be combined for purposes of investment upon written agreement of the participants, and this combination shall not be construed as defeating the segregation of those assets for accounting or other purposes.

(5) Sponsored captive insurance companies shall comply with the investment requirements contained in chapter 9, as applicable; provided, however, that compliance with such investment requirements shall be waived for sponsored captive insurance companies to the extent that credit for reinsurance ceded to reinsurers is allowed pursuant to section 4641(2)  5 or to the extent otherwise considered reasonable and appropriate by the commissioner. Sections 841 and 842  6 shall apply to sponsored captive insurance companies except to the extent it is inconsistent with approved accounting standards in use by the company. Notwithstanding any other provision of this act, the commissioner may approve the use of alternative reliable methods of valuation and rating.