ORS 91.090

The failure of a tenant to pay the rent reserved by the terms of the lease for the period of 10 days, unless a different period is stipulated in the lease, after it becomes due and payable, operates to terminate the tenancy. No notice to quit or pay the rent is required to render the holding of such tenant thereafter wrongful; however, if the landlord, after such default in payment of rent, accepts payment thereof, the lease is reinstated for the full period fixed by its terms, subject to termination by subsequent defaults in payment of rent.