The Step-Up will increase the member's computation factor to 2.5% for participating service which is accrued after the election. It will be computed for full years (12 months) of participating service only. Partial years of service (including participation in the Step-Up for partial years), service prior to the Step-Up election, purchased credit, prior service, military service, transported service, bonus years and unused sick leave will all be calculated at the regular 2% computation factor.
Okla. Admin. Code § 590:10-17-7