Oregon Revised Statutes Property Rights and Transactions § 105.643

(1) A disclaimer is barred by a written waiver of the right to disclaim.

(2) A disclaimer of an interest in property is barred if any of the following events occurs before the disclaimer becomes effective:

(3) A disclaimer, in whole or part, of the future exercise of a power held in a fiduciary capacity is not barred by the previous exercise of the power.

(4) A disclaimer, in whole or part, of the future exercise of a power not held in a fiduciary capacity is not barred by its previous exercise unless the power is exercisable in favor of the disclaimant.

(5) A disclaimer is barred or limited if so provided by a law other than ORS 105.623 to 105.649.

(6) A disclaimer is barred if the purpose or effect of the disclaimer is to prevent recovery of money or property to be applied against a judgment for restitution under ORS 137.101 to 137.109.

(7) A disclaimer of a power over property that is barred under this section is ineffective. A disclaimer of an interest in property that is barred under this section takes effect as a transfer of the interest disclaimed to the persons who would have taken the interest under ORS 105.623 to 105.649 had the disclaimer not been barred.