Oregon Revised Statutes Procedure in Civil Proceedings § 17.075

(1) An employer whose interest is or may become adverse to that of an injured employee shall not, within 15 days from the date of the occurrence causing the employee's injury:

(2) Subsection (1)(c) of this section does not apply to the extent that compliance with statutes or rules of federal or state agencies requiring reports of accidents and injuries necessitates obtaining an employee statement within the 15-day period following the date of the injury.

(3) Any settlement or compromise agreement entered into, any general release of liability or any written or oral statement made by any employee after the employee incurs a personal injury, that is not obtained in accordance with ORS 17.085, requiring notice, may be disavowed by the injured employee within 12 months following the date of the injury and such statement, release, compromise or settlement shall not be admissible evidence in any court action or administrative proceeding relating to the injury.