Oregon Revised Statutes Credit Unions, Lending Institutions and Pawnbrokers § 723.482

The provisions of ORS 723.480 that apply to rights of survivorship are determined by the form of the account at the time of death of a party. Subject to satisfaction of the requirements of the credit union, the form of an account may be altered by a written order given by a party to the credit union. The order must be signed by the party, be received by the credit union during the party's lifetime, and not be countermanded by other written order of the same party during the lifetime of the party.