Oregon Revised Statutes Insurance § 743B.341

(1) Every group health insurance policy that provides coverage for hospital or medical services or expenses shall provide that the insurer shall continue its obligation for benefits under the policy for any person insured under the policy who is hospitalized on the date of termination if the policy is terminated and immediately replaced by a group health insurance policy issued by another insurer. Any payment required under this section is subject to all terms, limitations and conditions of the policy except those relating to termination of benefits. Any obligation by an insurer under this section continues until the hospital confinement ends or hospital benefits under the policy are exhausted, whichever is earlier.

(2) The Director of the Department of Consumer and Business Services may adopt rules providing for uninterrupted coverage for individuals insured under a group health insurance policy providing coverage for hospital or medical expenses, when such a policy is replaced by a policy of similar benefits, whether issued by the same insurer or another.