Oregon Revised Statutes Procedure in Criminal Matters Generally § 144.285

(2) If the board grants the prisoner a hearing that is more than two years from the date a petition is denied, the prisoner may submit a request for an interim hearing not earlier than the date that is two years from the date the petition is denied and at intervals of not less than two years thereafter. If the board finds, based upon a request for an interim hearing, that there is reasonable cause to believe that the prisoner may be granted a change in the terms of confinement, the board shall conduct a hearing as soon as is reasonably convenient.

(3) When the board grants a prisoner a hearing that is more than two years from the date a petition is denied and when the board denies a petition for an interim hearing, the board shall issue a final order. The order shall be accompanied by findings of fact and conclusions of law. The findings of fact shall consist of a concise statement of the underlying facts supporting the findings as to each contested issue of fact and as to each ultimate fact required to support the board's order. Unless the prisoner bears the burden of persuasion, the order shall include findings necessary to deny the prisoner a change in the terms of confinement for any period of time when the prisoner would be presumed to be eligible for a change in the terms of confinement.