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5 min readOctober 29, 2026

Update Your Beneficiary at Open Enrollment: the Form People Skip

Open enrollment is a good moment to update beneficiaries on your work life insurance and retirement plan. The plan pays whoever is on its form. In a 401(k), naming someone other than your spouse needs your spouse's written consent.

dEssence TeamEditorial @ dEssence
Update Your Beneficiary at Open Enrollment: the Form People Skip

During open enrollment you pick a health plan, maybe change the dental coverage, and close the benefits portal. The beneficiary forms for your work life insurance and your retirement plan sit two clicks away, and they are the ones people skip. They matter more than they look: the plan pays the person named on its own form. For a 401(k) or similar plan, if you are married and want to name someone other than your spouse, federal law requires your spouse's written consent, witnessed by a notary or a plan representative. You can usually update a beneficiary at any time of year. Open enrollment is simply the week you are already logged in.

Why the beneficiary form is worth five minutes

A beneficiary is the person (or people, or a trust or charity) who receives an account or a policy when the owner dies. For retirement plans, the IRS puts it simply: the owner must designate the beneficiary under procedures established by the plan. In practice that means the plan's own form, on paper or in the benefits portal.

That form is what the plan follows. A case that reached the Supreme Court shows how far that goes. In Egelhoff v. Egelhoff (2001), a man had named his wife on the life insurance and pension from his employer. They divorced, he died soon after, and his children from an earlier marriage sued for the money under a state law that revoked an ex-spouse's designation after divorce. The Court held that the plan administrators pay the beneficiaries identified in the plan documents, and the state law could not change that.

The lesson for open enrollment is practical: whoever is on the form today is who the plan will look for. If that name is an ex, a parent who has since died, or a list that leaves out a child born last year, the form is out of date.

This is general information, not legal advice. If a will, a trust, a divorce or a blended family is involved, a lawyer is the right person to ask.

The spouse rule for 401(k) and pension plans

For retirement plans covered by ERISA, the federal law on private employer plans, the spouse has a built-in claim. Under 29 U.S.C. 1055, a 401(k)-type account plan pays the account in full to the surviving spouse when the participant dies, unless the spouse consents to a different beneficiary. The consent has to meet three conditions in that law:

  1. It is in writing. A checkbox you tick yourself does not count as the spouse's consent.
  2. It names the beneficiary, or a form of benefit, and that choice can't then be changed without the spouse's consent again, unless the consent says otherwise.
  3. It acknowledges what it does and is witnessed by a plan representative or a notary public.

That is why a beneficiary change in a retirement plan can take more than one sitting. You fill out the form, the spouse signs, someone witnesses it, and the plan accepts it. If you plan to name children, a sibling or a trust, start early and leave time for the notary.

Pension plans that pay a lifetime annuity have their own spouse rules in the same section. Your plan's summary plan description explains what applies to you, and the plan administrator can confirm it.

Work life insurance is different. ERISA does not set a spouse-by-default rule for it the way it does for retirement plans, so the form is all that decides. Some plans do have default rules for when no one is named. Read the plan's wording rather than assuming.

When to look again

Open enrollment is a yearly reminder, and some moments should send you back to the forms sooner:

  • Marriage or divorce. The case above is the clearest example of a form that outlived a marriage.
  • A new child. Contingent beneficiaries and shares may need to change.
  • A death in the family. If a named person has died, the plan goes to the next name or to its default rule.
  • A new job. A new 401(k) and new life insurance come with blank forms, and the old plan keeps the old form if you leave money there.

The check itself takes a few minutes: open each page, read the names, fix what is wrong, and save the confirmation. For the rest of the season's tasks, see our open enrollment checklist.

Where Tracy fits

Tracy, the assistant in dEssence, does not see your benefits portal or your email. Forward her the HR email about open enrollment, or send a screenshot from Telegram, iMessage, Chrome or the web, and tell her what you want to do: check both beneficiary forms before the window closes. When you get the confirmation, send that too, so it is easy to find next year.

Small, rare tasks like this are a big part of life admin: nobody reminds you, and the cost of skipping it shows up years later. The date your employer's enrollment window closes is in the same family as the renewal dates nobody mails you a letter about.

Frequently asked questions

Can I update my beneficiary during open enrollment?

Yes, and it is a good time to do it. Many plans also let you update a beneficiary at any time of year, so you do not have to wait for the window if something changes.

Does my spouse have to sign to change my 401(k) beneficiary?

If you are married and want to name someone other than your spouse in a 401(k) or similar plan covered by ERISA, yes. Federal law requires your spouse's written consent, witnessed by a notary or a plan representative.

Does a will override a beneficiary form?

For employer plans, the plan pays the beneficiary named in its documents. In Egelhoff v. Egelhoff, the Supreme Court held that a state law could not redirect the payment away from the person named. Ask a lawyer about your own will and accounts.

Where do I find my beneficiary for work life insurance?

Usually in your employer's benefits portal, on the life insurance or dependents and beneficiaries page. If you cannot find it, ask HR for the beneficiary form.

How do I know the change went through?

Look for a confirmation page or email after you submit, and save it. For a 401(k) change with spousal consent, the plan may confirm only after it receives the signed and witnessed form.

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