Section 661.402.208. Options not reversible once payments begin—exceptions.

       402.208(1) The member may change or cancel the member’s selected optional benefit until the first monthly benefit payment is made using the selected option. After the first monthly payment to the member or beneficiary, the option shall become permanent and not subject to cancellation or change.

       402.208(2) If a member dies without designating a beneficiary prior to receipt in benefits of an amount equal to the total amount in the member’s credit at the time of separation from service, the election is void.

       402.208(3) If a member who has designated a beneficiary dies and the beneficiary subsequently dies prior to receipt in benefits of an amount equal to the total amount in the member’s credit at the time of separation from service, the election remains valid.