Public retirement systems; Defined Contribution Retirement Plan for Teachers; Teachers' Retirement System of Oklahoma; defined contribution system; participation; election; service accrual; employee contribution amount; salary deductions; employer matching contributions; costs; vesting schedule; Board of Trustees; investment; deposit; defined benefit plan; offsets; qualified domestic orders; term; alternate payees; restrictions; rules; minimum salary schedule; codification; effective date.

HB 1258 creates a new defined contribution retirement plan for Oklahoma teachers hired on or after November 1, 2024. Teachers must make a one-time irrevocable election to join this plan, which replaces the existing defined benefit system for them; those who don’t elect it default to the current retirement system. Employees contribute a mandatory minimum of 4.5% of salary, with employers matching 6% (increasing to 7% if employees contribute more), all managed in tax-qualified retirement accounts. The plan prevents accrual of service credits under the old system, and participation is binding for all future service with participating employers.