Finding missing participants: a checklist for plan sponsors

Unclaimed Retirement Money Series · Post 4 of 6

Category: Retirement Plan Basics

Missing or unresponsive participants create administrative work and can increase the risk that earned retirement benefits are delayed, misdirected, or difficult to claim. Stale addresses are often the first visible sign, but the underlying issue may also involve outdated phone numbers, incomplete beneficiary records, plan mergers, payroll changes, or gaps between a plan’s records and the employer’s current information.

A practical, documented process can help plan sponsors address these issues consistently. No process can guarantee that every participant will be located, but a reasonable search program gives the plan a stronger basis for communicating with participants and making decisions about next steps.

The following checklist is designed for employers, HR professionals, and plan sponsors.

Why missing-participant procedures matter

Participants may leave an account behind when they change jobs, move, change their name, or stop responding to plan communications. Small balances may be particularly vulnerable to being overlooked.

GAO-15-73 noted that inactive accounts and forced transfers can make retirement savings more difficult to follow and may expose small balances to fees and poor outcomes over time. GAO-24-103577, "401(k) Plans: Additional Federal Actions Would Help Participants Track and Consolidate Their Retirement Savings," later found that participants face meaningful challenges when tracking and consolidating multiple workplace retirement accounts.

For plan sponsors, the practical lesson is direct: maintaining current contact information is not only a communications objective. It is part of an orderly plan administration process.

Sponsor checklist: locating participants and beneficiaries

1. Define the plan’s warning signs

Begin by identifying the events that should trigger a review. These may include:

  • Returned mail or undeliverable electronic communications
  • An address listed as invalid or incomplete
  • An uncashed distribution check
  • Repeated failure to respond to required notices
  • Missing phone numbers or email addresses
  • Conflicting dates of birth, Social Security numbers, or names
  • A former employee who has not updated information after separation
  • An incomplete or outdated beneficiary record
  • A plan merger, acquisition, payroll conversion, or recordkeeper change

The plan’s written procedures should explain who reviews these indicators, how quickly a review begins, and which search steps are appropriate for the circumstances.

2. Review the plan’s records first

Before looking outside the organization, compare the information available within the plan’s own records. Review:

  • The participant’s current and historical addresses
  • Mailing and email history
  • Phone numbers and emergency contacts
  • Beneficiary designations
  • Employment and termination dates
  • Distribution and rollover records
  • Payroll records and prior census files
  • Records from earlier plan administrators or recordkeepers
  • Documentation related to mergers, acquisitions, or plan conversions

Check whether a returned communication reflects a single data-entry error or a broader record problem. A missing apartment number, transposed digit, or outdated name may be resolvable through a simple records review.

The review should also confirm whether the participant already received a distribution, rolled the balance to another account, or has a benefit that remains payable under the plan. A search for contact information should not be treated as a determination that benefits are still owed.

3. Compare plan data with other internal records

The Department of Labor’s missing-participant guidance encourages plans to use employer and related-plan records when searching for updated information.

Depending on the organization’s privacy practices and internal controls, compare plan records with information held by:

  • Human resources
  • Payroll
  • Benefits administration
  • The company’s current retirement plan
  • Health and welfare plan records
  • Other employer-sponsored benefit programs
  • A successor or affiliated employer
  • Prior plan administrators

Use only information that the organization is permitted to review and share for this purpose. Access should be limited to personnel with a legitimate business need, and sensitive information should be handled through established security procedures.

This step can be especially useful after a payroll system change or corporate transaction, when one database may have been updated while another still contains older information.

4. Use an escalating contact process

A consistent sequence helps demonstrate that the plan treated the search as a process rather than a one-time mailing.

A reasonable sequence may include:

  1. Send a regular letter to the last known address.
  2. Send a follow-up using certified mail or another trackable method when appropriate.
  3. Attempt contact through a valid phone number or email address.
  4. Review beneficiary and alternate-contact information.
  5. Check the employer’s related records and other plan records.
  6. Use free online search tools where appropriate.
  7. Consider a reputable commercial locator service or other specialized search provider.
  8. Review relevant public records when permitted and appropriate.
  9. Reassess the search if new information becomes available.

The Department of Labor’s “Missing Participants: Best Practices for Pension Plans,” published in 2021, discusses the value of maintaining accurate census information, conducting periodic outreach, and using multiple search methods. The guidance also identifies tools that may be appropriate in certain situations, including commercial locator services, public records, credit reporting resources, and death-index information.

These tools should be used carefully. Plan sponsors should consider privacy, data security, cost, accuracy, and legal requirements before engaging a vendor or accessing a third-party database.

5. Communicate the official Lost and Found resource

The DOL Retirement Savings Lost and Found at lostandfound.dol.gov is the official federal channel for individuals looking for a retirement account. The database was launched on December 27, 2024, under the SECURE 2.0 Act.

The tool allows eligible individuals to search for reported private-sector or union-sponsored retirement plans associated with their Social Security number. It is not a complete database of every retirement account. It does not include all IRAs, government-sponsored plans, or certain religious-organization plans. A search result also does not guarantee that benefits remain payable; the plan administrator must confirm the participant’s status and available benefit.

According to the U.S. Department of Labor, the tool had 236,269 unique visitors from launch through the end of 2025, and approximately 29.5 percent found a retirement account tied to their Social Security number.

Those figures are an early usage snapshot, not a measure of all missing retirement accounts. Sponsors can include the official website in participant communications, separation materials, or financial education resources, while making clear that the database is only one possible source of information.

6. Document every search step

For each missing or nonresponsive participant, maintain a search record that includes:

  • The date the issue was identified
  • The information available at the beginning of the search
  • Each contact method used
  • The date and result of each attempt
  • Internal records reviewed
  • Vendors or databases consulted
  • Costs incurred
  • Decisions made and the reasons for those decisions
  • Any later updates or participant responses

Written documentation helps the plan apply its procedures consistently. It also allows the plan committee, administrator, or fiduciary to evaluate whether the process remains reasonable and effective.

The Department of Labor’s guidance supports putting missing-participant procedures in writing. Procedures should be reviewed periodically and updated when the plan’s systems, vendors, workforce, or legal requirements change.

7. Know when to involve a professional

A plan sponsor should consider escalating the matter when:

  • The participant’s identity or benefit status is unclear
  • The plan has undergone a merger, termination, or recordkeeper transition
  • The participant may be deceased and beneficiary rights must be reviewed
  • A distribution check remains uncashed
  • A state unclaimed-property transfer is being considered
  • A search vendor will receive sensitive personal information
  • The plan’s governing documents do not address the situation clearly
  • The issue affects multiple participants or suggests a broader data problem

The plan’s recordkeeper, third-party administrator, benefits counsel, ERISA counsel, or qualified search provider may be able to explain available procedures and documentation requirements. Sponsors should evaluate and monitor any service provider they retain rather than assuming that outsourcing eliminates the sponsor’s oversight responsibilities.

8. Treat unclaimed-property transfers as a carefully reviewed option

On January 14, 2025, the Department of Labor issued Field Assistance Bulletin 2025-01. The bulletin describes a temporary enforcement policy concerning certain small benefits owed to missing participants or beneficiaries in ongoing ERISA-covered defined contribution and defined benefit plans.

The policy may provide enforcement relief for transferring an entire benefit payment of $1,000 or less to an eligible state unclaimed-property fund, but only when specific conditions are satisfied. These include implementing a prudent search program consistent with the DOL’s missing-participant best practices, being unable to locate the participant or beneficiary despite those efforts, selecting an appropriate state fund, and meeting required plan-document and disclosure conditions.

FAB 2025-01 is not a shortcut for incomplete searches, and it does not eliminate fiduciary responsibilities. Plan sponsors should obtain plan-specific legal guidance before taking action under the bulletin.

A practical annual review

At least annually, plan sponsors should ask:

  • Are returned-mail records being reviewed promptly?
  • Are participant and beneficiary contact details updated when information changes?
  • Are payroll, HR, and plan records being compared when appropriate?
  • Are separation communications explaining how participants can keep information current?
  • Are search procedures documented and applied consistently?
  • Are vendors monitored for performance and data security?
  • Do the summary plan description and other notices remain accurate?
  • Does the plan committee understand when legal or administrative escalation is necessary?

A disciplined process will not locate every missing participant. It can, however, reduce avoidable gaps, improve the participant experience, and give the plan a clear record of the steps taken.

Navigant Advisory Group LLC is a Minneapolis-based, Black women-owned financial education firm. Black women-owned and operated since 2004. Navigant provides education and practical resources; it does not serve as a recordkeeper, custodian, or investment manager, and it does not advise or manage participant accounts.

For plan-specific questions, contact your own plan administrator, recordkeeper, third-party administrator, or legal counsel. For educational resources on retirement readiness and workplace financial wellbeing, visit Navigant’s Retirement Resource Center or services for businesses and plan sponsors.

Your guide for the journey.