Oregon Revised Statutes Public Officers and Employees § 238A.335

(1) A participating public employer may agree, by a written employment policy or by a collective bargaining agreement, to pay the employee contribution required under ORS 238A.330. The policy or agreement need not include all members of the individual account program employed by the employer.

(2) An agreement under this section to pay the required employee contribution may provide that:

(3) A participating public employer must give written notice to the Public Employees Retirement Board at the time that a written employment policy or collective bargaining agreement described in subsection (1) of this section is adopted or changed. The notice must specifically indicate whether the agreement is as described in subsection (2)(a) or (b) of this section. Any change in the manner in which employee contributions are to be paid applies only to employee contributions made on and after the date the notice is received by the board.