Or. Rev. Stat. § 308.320
(1) Every county assessor, at the time of the completion of the assessment roll, shall take and subscribe to an oath in substantially the following language and form:
State of Oregon )
) ss.
County of ______ )
I, ___________, being the duly elected, qualified and acting assessor of the above-named county, do solemnly swear that I have diligently and to the best of my ability assessed all property in said county, which by law I am permitted to assess; that I have not willfully or knowingly omitted to assess any person or property, or valued over its assessed value any property or class of property whatever.
Subscribed and sworn to before me this ___ day of _____, 2___.
(Signature and title of officer)
(Official seal)
[Amended by 1981 c.804 §52; 1991 c.459 §110; 1997 c.541 §171]