Oregon Revised Statutes Public Officers and Employees § 238A.100

(1)(a) Except as provided by subsection (2) of this section, an eligible employee who is employed in a qualifying position on or after August 29, 2003, by a public employer that is participating in the pension program and who will not receive benefits under ORS chapter 238 for service with the participating public employer pursuant to the provisions of ORS 238A.025 becomes a member of the pension program on the first day of the month after the employee completes six full calendar months of employment. The six-month requirement may not be interrupted by more than 30 consecutive working days.

(b) Employer contributions for new members of the pension program shall first be made under ORS 238A.220 for those wages that are attributable to services performed by the employee during the first full pay period following the six-month period, without regard to when those wages are considered earned for other purposes under this chapter.