Time during which a member is absent on leave without pay shall not be allowed in computing service: PROVIDED, HOWEVER, That any member shall be given credit for any period served by him or her in the national guard, or in the United States army, navy, or marine corps, upon the call of the president, if at the time of such service such member was a regular employee under leave of absence. Certificate of honorable discharge from and/or documentary evidence of such service shall be submitted to the board in order to obtain credit for such service.
Each member shall file with the board such information affecting his or her status as a member of the retirement system as the board may require.
RCW 41.28.050