Ohio Rev. Code § 145.195: Participants in both defined benefit and defined contribution plans.

The public employees retirement system may, in accordance with rules it adopts under this section, permit a member who participated in both the PERS defined benefit plan and one or more PERS defined contribution plans to combine years of service as a member for the purpose of determining eligibility for a benefit under section 145.32, 145.331, 145.332, or 145.335 of the Revised Code, or a benefit under a PERS defined contribution plan.