ORS § 237.420
The Public Employees Retirement Board established by ORS 237.952 shall, for the purposes of administration of this law, after March 27, 1953, succeed to the powers and duties of the Public Employees Retirement Board established by chapter 401, Oregon Laws 1945, as amended, and shall, upon application by any public agency in accordance with ORS 237.430 and 237.440, execute on behalf of the state an agreement or modification of such agreement, with the Federal Security Administrator (United States Secretary of Health and Human Services), or the designated agent or successor, for the coverage of employees of such public agency under the insurance system established by title 2 of the federal Social Security Act in conformity with the provisions of section 218 thereof and amendments thereto, and applicable federal regulations adopted pursuant thereto.
ORS 237.420