Or. Admin. R. 337-030-0025 – Hearing Request and Answers: Consequences of Failure to Answer

(1) A hearing request, and answer must be made in writing to the Board by the party or the party’s attorney and an answer must include the following:
1. (a) An admission or denial of each factual matter alleged in the notice;
2. (b) A short and plain statement of each relevant affirmative defense the party may have.
(2) Factual matters alleged in the notice and not denied in the answer shall be presumed admitted;
(3) Failure to raise a particular defense in the answer will be considered a waiver of such defense;
(4) Evidence shall not be taken on any issue not raised in the notice and answer.

ORS 688

ORS 688.415 - 688.605, 688.915