Tennessee Code Title 8. Public Officers and Employees § 8-36-107

(a) Upon the death of a member prior to retirement on account of whom no benefit is payable under §§ 8-36-108, 8-36-109 or part 6 of this chapter, the member's accumulated contributions shall be paid to such entity as the member shall have nominated by written designation, duly executed and filed with the board of trustees. In the event that there are no surviving designated beneficiaries, the member's accumulated contributions shall be paid to the member's estate in accordance with § 8-36-120.

(b) If such member shall have been in service within one hundred fifty (150) days preceding such member's death, an additional amount equal to such member's accumulated contributions shall be paid in accordance with subsection (a); provided, that no benefit is payable under §§ 8-36-108, 8-36-109 or part 6 of this chapter.

(c) Notwithstanding any provision of this section to the contrary, if a member described in subsection (a) dies while on an approved medical leave of absence, an additional amount equal to such member's accumulated contributions shall be paid in accordance with subsection (a); provided, that:

(d) Any person who is entitled to receive a retirement allowance under §§ 8-36-108, 8-36-109 or part 6 of this chapter on account of the death of a member prior to retirement may elect to receive the benefits provided in subsection (a) or (b) in lieu of the benefits to which such person would otherwise be entitled.