On or before July 1, 2009, each employer with annual average employment of more than twenty-five (25) employees for six (6) consecutive months of the year in the state of Rhode Island shall adopt and maintain for its employees a cafeteria plan that satisfies the Internal Revenue Code 26 U.S.C. § 125 and the rules and regulations promulgated by the office of the health insurance commissioner and through which the employees and their dependents may purchase health insurance. Nothing in this section shall be construed to require an employer covered by this section to pay for, or otherwise contribute to, the cost of any health insurance purchased through the cafeteria plan.