Oregon Revised Statutes Insurance § 732.659

(1) Subject to the provisions of ORS 732.666, an insurer, or the insurance group of which the insurer is a member, shall use a process that is comparable to the process described in the Own Risk and Solvency Assessment Guidance Manual to regularly conduct an own risk and solvency assessment. The insurer, or the insurance group of which the insurer is a member, shall conduct the assessment at least annually but also at any time when significant changes occur in the risk profile of the insurer or insurance group.

(2) A change in the Own Risk and Solvency Assessment Guidance Manual takes effect on a date that the Director of the Department of Consumer and Business Services specifies.