In the event the participant dies without a valid beneficiary designation on file, any balance remaining in the participant’s account shall be payable to the participant’s survivors in the following order:
(a) The participant’s spouse.
(b) The participant’s natural or adopted children.
(c) The participant’s parents.
(d) The participant’s estate.
(Added by Stats. 1999, Ch. 307, Sec. 4. Effective January 1, 2000.)