Oregon Revised Statutes Labor and Employment; Unlawful Discrimination § 659A.355

(1) It is an unlawful employment practice for an employer to discharge, demote or suspend, or to discriminate or retaliate against, an employee with regard to promotion, compensation or other terms, conditions or privileges of employment because the employee has:

(2) This section does not apply to an employee who has access to wage information of employees as part of the job functions of the employee's position and discloses the wages of those employees to individuals not authorized access to the information, unless the disclosure is in response to a charge or complaint or is in furtherance of an investigation, proceeding, hearing or action, including but not limited to an investigation conducted by the employer.