Oregon Revised Statutes Public Officers and Employees § 238.720

(1) The Public Employees Retirement Board may accept rollover contributions from a retired member solely for the purpose of paying amounts claimed by the board as overpayments or other improperly made payments. The board may accept rollover contributions under this section only if the amounts contributed qualify for pretax rollover treatment under the federal income tax laws governing qualified retirement plans.

(2) If the board accepts a rollover contribution under this section, the contribution shall be paid into the Public Employees Retirement Fund and credited against the amounts claimed by the board as overpayments or other improperly made payments.

(3) The board shall adopt rules and establish procedures for determining whether a retired member will be allowed to make a rollover contribution under this section. Rules and procedures adopted by the board must ensure that the rollover contributions do not adversely affect the status of the Public Employees Retirement System and the Public Employees Retirement Fund as a qualified governmental plan and trust under federal income tax law.