Oregon Revised Statutes Public Officers and Employees § 238.088

(1) Except as provided in subsection (2) of this section, a person who is elected to a full-time salaried office of the state or one of the participating political subdivisions thereof, or who is appointed to a full-time salaried office having a term fixed by statute or charter, whether or not the person has been retired, does not forfeit any rights accrued or accruing to the person under this chapter. However, for the period that such person holds such office the person is not entitled to any pension or annuity provided by this chapter. Upon ceasing to hold such office, benefits shall be computed or recomputed by the Public Employees Retirement Board on the basis of age then attained.

(2) If a person is elected or appointed to the office of sheriff or county judge or commissioner in a county with a population of fewer than 75,000 inhabitants, according to the latest federal decennial census, and the person does not elect to become an active member of the system under ORS 238.015 (5), the person shall continue to be a retired member and to receive retirement benefits for as long as the person holds the office.

(3) Subsection (2) of this section does not apply to any member who retires under the provisions of ORS 238.280 (1), (2) or (3).