Oregon Revised Statutes Procedure in Civil Proceedings § 15.335

(1) A party has consented to a contract if the law applicable under ORS 15.320, 15.360 or 15.380 so provides.

(2) In a consumer contract or employment contract, the consumer or employee whose assent to a contract was obtained in the state of the party's residence, or whose conduct leading to the contract was primarily confined to that state, may invoke the law of that state to establish that the party did not consent to the contract or that the consent was not valid by reason of fraud or duress.