Every officer and employee of the State and the several counties who is a member of the Hawaii national guard or organized reserves, including the officers’ reserve corps and the enlisted reserve corps, shall be entitled to be absent from the officer’s or employee’s duties or service while engaged in the performance of ordered military or naval duty and while going to and returning from such duty.

No officer or employee shall be subjected, directly or indirectly, by reason of the absence to any loss or diminution of vacation or holiday privileges or be prejudiced by reason of the absence with reference to promotion or continuance in office, employment, reappointment to office, or reemployment.