Benefit plans that provide benefits upon a participant's death allow the participant to designate a beneficiary to receive the post-death payments. A frequent source of controversy is participants' failure to update beneficiary designations following a divorce, marriage or other change in circumstances.
Problems can arise when a participant seeks to provide the benefit to children of a former marriage instead of a new spouse. Often, a prenuptial agreement explicitly addresses the benefits and the new spouse may agree to waive any interest in the benefit. However, almost as often, the participant then forgets to file a new beneficiary designation form with the plan administrator.
Most employer-sponsored benefit plans are subject to ERISA, which has very strict rules about beneficiaries. For example, ERISA provides that a participant cannot designate a non-spouse beneficiary without the spouse's written consent witnessed by the plan administrator or a notary. Often, such consents are signed before the spouse is actually married to the participant, as in a pre-nuptial agreement. In such a case, courts require the plan to pay the spouse since ERISA requires the plan to do so, unless a beneficiary designation, consented to by the spouse, indicates otherwise.
Does a prenuptial agreement satisfy the ERISA requirement? No, because when signed, the prenuptial agreement is not signed by a "spouse" -- the couple are not yet married. As clearly stated in the Dept. of Labor's regulations: "An agreement entered into prior to marriage does not satisfy the applicable consent requirements." What if the agreement is signed after the wedding? At least then the timing is proper, and if the form of the agreement and its execution are proper, then it may satisfy the requirement. A better practice is to use the plan's beneficiary form and have the new spouse indicate their consent on the form, witnessed by a notary or plan administrator.
The lesson for participants is to periodically check beneficiary designations to ensure that the any post-death benefits will go to the persons the beneficiary wants to receive them, not the person ERISA would otherwise require. For plan fiduciaries, the lesson is to know and understand the consent requirements and ensure that they are followed. Otherwise, the plan risks paying a benefit twice: to the person the plan thought should have received the benefit, and to the one who won the lawsuit against the plan for paying the wrong person.