Tex. Family Code § 9.302

(a) If a decree of divorce or annulment is rendered after a spouse, acting in the capacity of a participant, annuitant, or account holder, has designated the other spouse as a beneficiary under an individual retirement account, employee stock option plan, stock option, or other form of savings, bonus, profit-sharing, or other employer plan or financial plan of an employee or a participant in force at the time of rendition, the designating provision in the plan in favor of the other former spouse is not effective unless:

(1) the decree designates the other former spouse as the beneficiary;

(2) the designating former spouse redesignates the other former spouse as the beneficiary after rendition of the decree; or

(3) the other former spouse is designated to receive the proceeds or benefits in trust for, on behalf of, or for the benefit of a child or dependent of either former spouse.

(b) If a designation is not effective under Subsection (a), the benefits or proceeds are payable to the named alternative beneficiary or, if there is not a named alternative beneficiary, to the designating former spouse.

(c) A business entity, employer, pension trust, insurer, financial institution, or other person obligated to pay retirement benefits or proceeds of a financial plan covered by this section who pays the benefits or proceeds to the beneficiary under a designation of the other former spouse that is not effective under Subsection (a) is liable for payment of the benefits or proceeds to the person provided by Subsection (b) only if:

(1) before payment of the benefits or proceeds to the designated beneficiary, the payor receives written notice at the home office or principal office of the payor from an interested person that the designation of the beneficiary or fiduciary is not effective under Subsection (a); and

(2) the payor has not interpleaded the benefits or proceeds into the registry of a court of competent jurisdiction in accordance with the Texas Rules of Civil Procedure.

(d) This section does not affect the right of a former spouse to assert an ownership interest in an undivided pension, retirement, annuity, or other financial plan described by this section as provided by this subchapter.

(e) This section does not apply to the disposition of a beneficial interest in a retirement benefit or other financial plan of a public retirement system as defined by Section 802.001, Government Code.