ORS § 238.315
A member of the system who has separated from the service of all participating employers, who retires for service and whose total service retirement allowance on the effective date of retirement, as computed by the board in accordance with the nonrefund plan, is less than $200 per month, shall receive, in lieu of any and all retirement allowance or other benefits under the system, a retirement benefit in the form of a lump sum amount equal to the actuarial value, on the effective date of retirement, of the retirement allowance computed by the board in accordance with the nonrefund plan. A member who receives a retirement benefit as provided in this section is eligible to participate in insurance coverage under ORS 238.410, and the board shall determine the manner in which the cost of that coverage payable by the member shall be paid.
ORS 238.315