What Happens to a 401(k) When Someone Goes Missing in California?

by Michael Hackard

Publication Date September 11, 2026 in Life Insurance Beneficiary Litigation

Someone leaves. Not dies — leaves. There is no funeral, no death certificate, no probate. There is a phone that stops answering and a last known address that goes stale.

Years later, going through what is left of the paperwork, a family member finds a statement. A 401(k), still in his name, still holding a balance.

Now what?

This is one of the least-written-about problems in California estate law, and families who face it almost always start in the wrong place. Here is how it actually works.

California presumes a person dead after five years

Probate Code § 12401 provides that a person who has not been seen or heard from for a continuous period of five years by those likely to have seen or heard from him — and whose absence is not satisfactorily explained after a diligent search or inquiry — is presumed to be dead. California Evidence Code § 667 states a parallel presumption.

Five years is the threshold. Most families who reach out have been waiting far longer.

The presumption is not automatic. Nobody at the Social Security Administration flips a switch on the fifth anniversary. A court has to be asked. The vehicle is a petition under Probate Code §§ 12400–12408, filed in the superior court of the county where the missing person last lived.

The presumption alone does not release the money

This is where most families go wrong. They assume that if they can get a court to declare their relative dead, the retirement account follows.

It does not — at least not automatically.

A 401(k) is a non-probate asset. It passes by beneficiary designation, not by will and not by probate order. Whoever is written on the form the participant signed when he was hired is the person entitled to the money. A court order determining that he died does not change who he named. It only proves that the event that triggers payment has occurred.

So the first question is not how do we get him declared dead. The first question is:

Who is named as beneficiary on the account?

Everything downstream depends on the answer.

Path one: a living named beneficiary

If the participant named someone who is still alive — a parent, a sibling, a former spouse, a friend — that person claims the money directly from the plan. No probate. No letters of administration. No estate at all.

What the plan will require is proof of death, and a family affidavit will not satisfy it. A certified copy of the court’s order under § 12407, which determines the date of death, is what fills that gap. Some plans will also want a death record issued on the strength of the court order.

This path is faster and cheaper by a wide margin. It is worth confirming the designation before spending a dollar on anything else.

One federal wrinkle: if the participant was married, ERISA generally makes the surviving spouse the default beneficiary of a 401(k) death benefit unless the spouse signed a written waiver. A designation naming someone else, signed without spousal consent, may not hold.

Path two: no valid beneficiary designation

If the form is blank, if it names someone who died first, or if the employer cannot locate it after thirty years of recordkeeping changes, the plan document controls. Most plans default to the surviving spouse, then to the participant’s estate.

If it goes to the estate, there has to be an estate. That is the full § 12400 proceeding: petition, notice, hearing, a court finding of presumed death, a determination of the date of death, and appointment of an administrator.

From there, the money passes by California’s intestacy statute if the missing person left no will. Probate Code § 6402 sets the order: children first, then parents, then siblings and their descendants, then grandparents, and outward from there.

Families are frequently surprised by where this lands. A sibling who does all the work of the petition may recover nothing, because a surviving parent stands ahead of siblings in the statute. The person who files is not always the person who collects.

Where the money actually sits after ten or twenty years

The account statement a family finds in a drawer may be describing something that no longer exists in that form. Plans merge. Employers dissolve. Recordkeepers change hands.

Check all of the following:

The plan itself. If the employer still exists and the plan is still operating, larger balances generally stay put. Small balances can be forced out.

A safe-harbor IRA. When a plan terminates and cannot find a participant, the fiduciary may roll the balance into an IRA opened in the participant’s name at a designated custodian. The money is still there. It is just somewhere else.

The California State Controller’s unclaimed property program. Dormant financial assets escheat to the state. The Controller’s database is free and searchable by name.

The federal Retirement Savings Lost and Found. The U.S. Department of Labor launched this public database under the SECURE 2.0 Act. It is genuinely useful, and it has real limits: it currently covers separated vested participants who have reached age 65, and it does not include former employees of church or government plans. Plan administrators submit the data voluntarily, so coverage is incomplete. A search that comes back empty does not mean there is no account.

Search all four. They do not talk to each other.

The date of death is a fact the court decides — and it matters more than you think

Read § 12401 closely. The statute presumes that death occurred at the end of the five-year period, not at the beginning, unless there is sufficient evidence to establish that death occurred earlier.

So a person last seen in 2007 is presumed, by default, to have died around 2012.

For a 401(k) this is often a formality. For other assets it is not — and even for a retirement account it can matter for tax treatment, because the rules governing how quickly an inherited retirement account must be distributed have changed over the years and turn on the year of death.

If the family has evidence pointing to an earlier date — a last confirmed sighting, a police report, circumstances suggesting the person did not survive the event that preceded his disappearance — that evidence belongs in the petition. The date of death is litigable, not clerical.

What a diligent search has to look like

The statute conditions the presumption on an absence that is not satisfactorily explained after diligent search or inquiry, and the petition must describe the search that was made. Courts take this seriously. A declaration saying “we asked around” will not carry a petition.

A search that holds up generally includes law enforcement missing-person reports and NamUs records, Social Security and death-index checks, credit header and public-records searches, contact with last known employers and landlords, outreach to every relative and associate likely to have heard from the person, and a licensed investigator’s declaration describing what was done and what came back.

Section 12406 allows the court to order a search, with the cost paid by the estate — or, if there is no administration, by the petitioner at the court’s discretion. Notice must also be mailed to the missing person at his last known address. The law keeps a door open for him.

Four mistakes families make

Waiting for a death certificate. One will not arrive on its own. The court order is the substitute.

Skipping the beneficiary designation. It is the single fact that determines whether this is a simple claim or a full probate proceeding, and it is free to ask.

Assuming the person who files is the person who inherits. Section 6402 has its own order and it does not follow effort or affection.

Forgetting the money can come back. If the missing person returns, § 12408 permits him to recover from those who received distributions, to the extent recovery is equitable under all the circumstances. Beneficiaries should be told this before they spend.