Oregon Revised Statutes Corporations and Partnerships § 58.076

(1) Except to the extent authorized by subsection (2) of this section, a corporation may elect professional corporation status under ORS 58.085 solely for the purpose of rendering professional service or services, including services ancillary to them, and solely within a single profession.

(2) A corporation may elect professional corporation status under ORS 58.085 for the purpose of rendering professional service or services within two or more professions, and for the purpose of engaging in any lawful business authorized by ORS 60.074, to the extent the combination of professional purposes or of professional and business purposes is expressly authorized by the regulatory board in this state applicable to each profession in the combination.