Oregon Revised Statutes Financial Institutions § 708A.485

An insured institution may enter into a multiple-party account to the same extent that the insured institution may enter into a single-party account. The insured institution may pay any multiple-party account, on request, to any one or more of the parties. An insured institution need not inquire as to the source of funds the insured institution receives for deposit to a multiple-party account, or as to the proposed application of any sum withdrawn from an account, for purposes of establishing net contributions.