Section 238A.145 - Loss of retirement credit(1) A pension program member who is not vested forfeits all retirement credit if the member performs fewer than 600 hours of service in each of five consecutive calendar years. A forfeiture under this section takes effect at the end of the fifth calendar year.(2) If a pension program member forfeits retirement credit under this section and is subsequently reemployed by a participating public employer: (a) The person may acquire retirement credit under the pension program only for the purpose of service performed after the person is reemployed; and(b) Any service performed before the forfeiture may not be credited toward the period of service required by ORS 238A.100 or 238A.115, or toward the accrual of retirement credit under ORS 238A.140, 238A.150 or 238A.155.