If the Board of Directors determines that the affairs of the Society may be administered suitably and efficiently, the Society may enter into a contract with a licensed insurer or licensed nonprofit health service plan to administer the affairs of the Society, subject to the continuing direction of the Board of Directors specified in the articles of incorporation and bylaws of the Society and the contract. A contract may not exceed 5 years. On execution of the contract, the Society promptly shall file a true copy of the contract with the Commissioner. The contract is effective 30 days after the date of filing unless, before the effective date, the Commissioner disapproves the contract as contrary to law or public policy or as unduly onerous and states the reasons for the disapproval.