An employer in this state that offers its employees the option to enroll in a health maintenance organization and an employee benefit fund in this state that offers its members the option to enroll in a health maintenance organization may not be required to pay more for health benefits provided by the health maintenance organization than it would otherwise be required to provide by any prevailing collective bargaining agreement or other contract for the provision of health benefits to its employees, if the employer or benefits fund pays to the health maintenance organization chosen by each employee or member an amount equal to the lesser of:
§ 33-31-304, MCA