Oregon Revised Statutes Procedure in Criminal Matters Generally § 136.655

(1) Except as provided in subsection (2) of this section, in all criminal actions in which a spouse in a marriage is the party accused, the other spouse is a competent witness, but neither spouse shall be compelled or allowed to testify in a criminal action, except as provided in ORS 40.255.

(2) There is no privilege under this section, or under ORS 40.255 in all criminal actions in which a spouse is charged with bigamy or with an offense or attempted offense against the person or property of the other spouse or of a child of either, or with an offense against the person or property of a third person committed in the course of committing or attempting to commit an offense against the other spouse.