Oregon Revised Statutes Insurance § 734.280

(1) All claims against an insurer, against which delinquency proceedings have been begun, shall set forth in reasonable detail the amount of the claim, or the basis upon which such amount can be ascertained, the facts upon which the claim is based, and the priorities asserted, if any. All such claims shall be verified by the affidavit of the claimant, or someone authorized to act on behalf of the claimant and having knowledge of the facts, and shall be supported by such documents as may be material thereto.

(2) All claims filed in this state shall be filed with the receiver, whether domiciliary or ancillary, in this state, on or before the last date for filing as specified in this chapter.

(3) After the expiration of any period for filing of claims, the receiver shall report the claims filed within such period to the court, specifying in such report the recommendation of the receiver with respect to the action to be taken thereon. Upon receipt of such report, the court shall fix a time for hearing such claims and shall direct that the claimants or the receiver, as the court shall specify, shall give such notice as the court shall determine to such persons as shall appear to the court to be interested therein. All such notices shall specify the time and place of the hearing and shall concisely state the amount and nature of the claim, the priorities asserted, if any, and the recommendation of the receiver with reference thereto.

(4) At the hearing all persons interested shall be entitled to appear and the court shall enter an order allowing, allowing in part, or disallowing the claim. Any such order shall be deemed to be an appealable order.