Oregon Revised Statutes Public Health and Safety § 462.025

No licensee who accepts an engagement or employment or undertakes activities in preparation for or in connection with a race meet shall voluntarily terminate or discontinue the engagement, employment or activities of the licensee or otherwise refuse to cooperate or participate, unless the licensee gives the Oregon Racing Commission notice in writing of the intention to do so at least 15 days prior to such termination or discontinuance. The commission may, upon notice to all interested parties, conduct one or more hearings with respect to any such termination or discontinuance.