Oregon Revised Statutes Public Officers and Employees § 240.580

An employee who is initially appointed to a position in the unclassified service as a member of the Oregon State Police under ORS 181A.050, who separates voluntarily from that service and who, within two years after the separation, is appointed to a position in the classified service, whether within a bargaining unit covered by a collective bargaining agreement or not, and acquires regular employee status shall be entitled, for purposes of layoff and opportunity for reemployment after separation for reasons other than cause, to service credit for the service in the unclassified service preceding the service in the classified service.ORS 240.321 (3) does not apply to service credit granted under this section.