In Griffin v. Griffin c/o Cowser-Griffin, 62 Va. App. 736, 753 S.E.2d 574 (Va. App. 2014), upheld without comment by the Virginia Supreme Court in Cowser-Griffin v. Griffin, 2015 WL 798707 (Va. S. Ct. unpublished 2015),
the parties' separation agreement said that the children would be named beneficiaries of the husband's defined-contribution retirement plans. Not what we usually think of as requiring a QDRO. The couple was divorced and the husband remarried. The plan’s policy, stated in the plan documents provided to the husband, was to pay the plan out to the widow unless (1) she consented to another beneficiary or (2) there was a QDRO directing otherwise. The trial court said that the divorce decree which incorporated the agreement was not a QDRO, and the retirement plan had no notice of its provisions and no duties to the intended beneficiaries.
But the Virginia Court of Appeals and the Virginia Supreme Court ruled that a Qualified Domestic Relations Order may be made, even though the husband is dead. Virginia law lets Qualified Domestic Relations Orders be made, or amended, long after a divorce is final, for the limited purpose of effectually carrying out what was decided in a separation agreement or divorce decree. This is "merely an administrative mechanism" to enforce rights that have already vested under state law pursuant to, and at the time of, the agreement and divorce decree. Likewise, federal regulations under ERISA, at 29 C.F.R. § 2530.206, expressly allow posthumous QDROs.
However, if the benefits had been considered a survivor benefit and had been from a defined-benefit plan, the result would have been otherwise, under Hopkins v. AT&T Global Information Solutions Co., 105 F.3d 153 (4th Cir. 1997), which held that a survivor benefit vests in the current spouse at the time of retirement. Hopkins was based on regulations that apply to defined-benefit plans, specifically joint-and-survivor annuities, which base the amount of the monthly benefits on both spouses’ life expectancies at the time of retirement.
Until this case, the only remedy in such cases was against the second wife, not the retirement plan. The intended beneficiaries would have to sue her and ask a court to impose a "constructive trust" on the benefits she received from the plan.
The Virginia Supreme Court merely adopted the reasoning of the Court of Appeals without repeating or improving upon it, so to see the reasoning you have to look at the Court of Appeals opinion,Griffin v. Griffin c/o Cowser-Griffin, 62 Va. App. 736, 753 S.E.2d 574 (Va. App. 2014).