112.14 Purpose and intent of law.—It is hereby declared to be the purpose and intent of this law to make available upon a voluntary participation basis to the several officers and employees aforesaid, the economics, protection and benefits of group insurance not available to each officer and employee as an individual. It is also the purpose and intent of this law to provide authority for the payment of premiums or charges for group insurance for county officers whose compensation is fixed by chapter 145 in addition to the compensation provided in chapter 145.