Hawaii Revised Statutes Division 1. Government § 88-272

(1) Service by an employee rendered since becoming a member;

(2) Service credited under part II as a class A or class B member for members who make the election described in section 88-271(a);

(3) Service for members who return to service in the manner described in section 88-271(b);

(4) Service in the armed forces as provided by subpart E of part II; provided that the service shall be credited at no cost upon certification by the system;

(5) Mandatory maternity leave as provided in part II; provided that such service shall be credited at no cost upon certification by the system;

(6) Service rendered prior to becoming a class C member as described in section 88-51 that is not included in paragraphs (1) to (5); provided that the service shall be credited at no cost. Upon certification by the system, that service shall be credited at the rate of one month of service credit for each month of service rendered following the return to membership; and

(7) Unused sick leave as provided in section 88-63; provided that any additional service credit shall not be used in determining eligibility for retirement or for any other purpose as a class C member.