Oregon Revised Statutes Insurance § 733.340

(a) The Director of the Department of Consumer and Business Services issues the exemption to the insurer in writing and does not subsequently revoke the exemption in writing;

(b) The director identifies the specific product form or product line in the written exemption; and

(c) The insurer computes reserves using assumptions and methods the insurer used before the operative date of the valuation manual and otherwise complies with any requirements the director specifies by rule.