PDFWAC 415-112-500
Do I qualify for retirement from Plan 1?
You may retire from Plan 1:
(1) At age sixty with a minimum of five years of service. You may not use service credit you purchased for professional preparation or military service to meet the five-year minimum;
(2) At age fifty-five with a minimum of twenty-five years of service; or
(3) At any age with a minimum of thirty years of service.
See RCW 41.32.480.