ORS § 105.137

(9) If an
unrepresented defendant files an answer as provided in subsection (8) of this
section, the answer does not limit the defenses available to the defendant at
trial under ORS chapter 90. If such a defendant seeks to assert at trial a
defense not fairly raised by the answer, the plaintiff is entitled to a
reasonable continuance for the purposes of preparing to meet the defense. [1975
c.256 §13; 1979 c.765 §5; 1979 c.854 §3; 1981 c.753 §12; 1989 c.506 §19; 1997
c.577 §34; 2005 c.391 §33; 2007 c.508 §14; 2023 c.13 §63; 2023 c.549 §4]