Once you are vested Status of a PERS member who has been an active member of the system in each of five calendar years. in your PERS benefits, you cannot lose those benefit rights, even if you stop working in a qualifying position. You are vested in your Tier One or Tier Two member account if you have not withdrawn your member account and you have been an active member in each of five calendar years.
Eligible prior service credit granted by agreement between your employer and PERS may count for all or part of the five calendar years.
Once vested, you can remain a Tier One/Tier Two member and draw benefits at retirement age, even if you leave covered employment in the interim, unless you withdraw your account.