Miss. Code § 25-11-115
Option 1. If the retired member dies before he or she has received in annuity payment the value of the member's annuity savings account as it was at the time of the member's retirement, the balance shall be paid to the legal representative or to such person as the member has nominated by written designation duly acknowledged and filed with the board;
Option 2. Upon the retired member's death, his or her reduced retirement allowance shall be continued throughout the life of, and paid to, such person as the member has nominated by written designation duly acknowledged and filed with the board of trustees at the time of his or her retirement;
Option 3. Upon the retired member's death, one-half (1/2) of his or her reduced retirement allowance shall be continued throughout the life of, and paid to, such person as the member has nominated by written designation duly acknowledged and filed with the board of trustees at the time of his or her retirement, and the other one-half (1/2) of his or her reduced retirement allowance to some other designated beneficiary;
Option 4. Upon the retired member's death, three-fourths (3/4) of his or her reduced retirement allowance, or such other specified amount, shall be continued throughout the life of, and paid to, such person as the member has nominated by written designation duly acknowledged and filed with the board of trustees at the time of his or her retirement;
Option 4-A. Upon the retired member's death, one-half (1/2) of his or her reduced retirement allowance, or such other specified amount, shall be continued throughout the life of, and paid to, such person as the member has nominated by written designation duly acknowledged and filed with the board of trustees at the time of his or her retirement;
Option 4-B. A reduced retirement allowance shall be continued throughout the life of the retirant, but with the further guarantee of payments to the named beneficiary or beneficiaries for a specified number of years certain. If the retired member or the last designated beneficiary both die before receiving all guaranteed payments due, the actuarial equivalent of the remaining payments shall be paid to the successors of the retired member under Section 25-11-117.1(1);
Option 6. Any member who became a member of the system before July 1, 2007, and who has at least twenty-eight (28) years of creditable service at the time of retirement or who is at least sixty-three (63) years of age and eligible to retire, may select the maximum retirement benefit or an optional benefit as provided in this subsection together with a partial lump-sum distribution. Any member who became a member of the system on or after July 1, 2007, but before July 1, 2011, and who has at least twenty-eight (28) years of creditable service at the time of retirement may select the maximum retirement benefit or any optional benefit as provided in this subsection together with a partial lump-sum distribution. Any member who became a member of the system on or after July 1, 2011, and who has at least thirty-three (33) years of creditable service at the time of retirement may select the maximum retirement benefit or any optional benefit as provided in this subsection together with a partial lump-sum distribution. The amount of the lump-sum distribution under this option shall be equal to the maximum monthly benefit multiplied by twelve (12), twenty-four (24) or thirty-six (36) as selected by the member. The maximum retirement benefit shall be actuarially reduced to reflect the amount of the lump-sum distribution selected and further reduced for any other optional benefit selected. The annuity and lump-sum distribution shall be computed to result in no actuarial loss to the system. The lump-sum distribution shall be made as a single payment payable at the time the first monthly annuity payment is paid to the retiree. The amount of the lump-sum distribution shall be deducted from the member's annuity savings account in computing what contributions remain at the death of the retiree and/or a beneficiary. The lump-sum distribution option may be elected only once by a member upon initial retirement, and may not be elected by a retiree, by members applying for a disability retirement annuity, or by survivors.
Miss. Code § 25-11-115