Hawaii Revised Statutes Division 1. Government § 88-187

(1) That the person has attained the age of sixty years or, through accident sustained without the person's fault or negligence in the performance of duty in the person's service for the county, or illness, has become incapable of sustained remunerative work;

(2) That the person, except in case of accident and disability has been in the service and employment of the county for a total period of not less than ten years.

Any employee who had the option to but did not elect to become a member of any retirement system now in effect shall be eligible to receive only fifty per cent of the pension amount otherwise computed under this part.