There’s a quiet financial problem hiding in the background of millions of working lives. People change jobs, move house, get absorbed into the next chapter of their career, and somewhere in that shuffle, a pension pot gets left behind. It doesn’t vanish exactly. It just waits, unclaimed, growing or shrinking, while its rightful owner has no idea it exists.
The scale of this problem is genuinely striking, and it’s getting larger. Whether you’ve held two jobs or twelve, there’s a real chance that money you earned years ago is still sitting in a plan you’ve long since forgotten. Here’s what the evidence shows, and what you can actually do about it.
The Numbers Are Staggering
A 2025 study estimates that the U.S. alone had roughly 31.9 million unclaimed 401(k) accounts, holding approximately $2.13 trillion in assets. That’s not a rounding error. That’s a sum comparable to the GDP of a mid-sized country, sitting idle in accounts workers have simply lost track of.
In the UK, research published by the Pensions Policy Institute in late 2024 found £31.1 billion lying in unclaimed, inactive, or lost pension pots, with almost 3.3 million pots not currently claimed by their owners. The value of lost pension pots in the UK has increased by roughly 60 percent, or nearly £12 billion, since 2018. Both countries are dealing with what amounts to an enormous, slow-moving retirement crisis hiding in plain sight.
Why Workers Lose Track in the First Place
It isn’t unusual for workers to hold many jobs throughout their careers. People born in the later years of the baby boom, from 1957 to 1964, held an average of nearly 13 jobs between the ages of 18 and 56, according to the U.S. Bureau of Labor Statistics. Each job transition creates an opportunity for a retirement account to be quietly left behind.
As time goes by, workers may not think to contact their former employers with updated personal information. Some participants, especially those automatically enrolled, may not even realize they have an account. Retirement plans also lose track of participants due to incomplete recordkeeping, and in some cases workers lose track of their retirement plans after their former employer goes out of business or when companies merge.
Corporate Mergers and Closures Make It Worse
It is not uncommon for plan sponsors to undergo multiple mergers or acquisitions over time, and participants can lose track of which corporate entity is responsible for paying their retirement benefit. This issue can impact both defined benefit pension plans and defined contribution plans and is commonly referred to as having a “lost plan.”
Private-sector retirement benefits go missing for predictable reasons: mergers or bankruptcies, plan terminations, address changes, dormant accounts, and record fragmentation across custodians. When a company you worked for twenty years ago has changed its name twice and been absorbed by a conglomerate, tracking down the pension administrator becomes genuinely difficult.
The Average Lost Pot Is Not Pocket Change
Lost pensions in the UK are worth an average of £9,470, rising to £13,620 among people aged 55 to 75. For many people, that’s a meaningful addition to retirement income, not a trivial oversight. In the U.S., the PBGC reports that unclaimed pensions are collectively worth over $300 million, and individual benefits range from a few cents to almost a million dollars.
The wide range matters. Not every forgotten account is worth chasing with urgency, but many of them are. A pension pot worth several thousand dollars or pounds, left invested for another decade, could be far more valuable by the time someone finally claims it. If you lose track of your pensions or fail to claim them, the funds remain within these accounts. Over time, unclaimed pensions may be transferred to a dormant accounts scheme, but you can still claim the funds and receive your rightful benefits.
The U.S. Government Finally Built a Lost-and-Found Database
The U.S. Department of Labor introduced a valuable new tool to make finding these accounts easier. Launched on December 29, 2024, the Retirement Savings Lost and Found Database is an online resource designed to help individuals locate lost or forgotten retirement accounts. It was a long time coming.
The database is the result of a provision included in retirement legislation known as Secure 2.0, which was signed into law in December 2022. The bill required the Department of Labor to create and maintain a database to help workers locate retirement accounts they left behind with a former employer. Of the roughly 236,000 unique visitors who logged onto the database from its launch through the end of 2025, about 29.5 percent found an old 401(k), pension, or other workplace retirement plan associated with their Social Security number. Nearly one in three searches turned up something real.
The PBGC Has Been Holding Pension Money for Decades
The Pension Benefit Guaranty Corporation insures private-sector traditional pension plans and pays out benefits up to certain limits if the plan fails. The PBGC has a database of unclaimed pensions listing over 72,000 people who are eligible for pension payments that could not be located. Residents of California have the most unclaimed pensions, followed by Texas, New York, Florida, and Illinois.
When a defined benefit pension plan terminates, benefits may be transferred to the PBGC, or to an insurer via annuity purchase. If someone cannot be found, the plan administrator either purchases an annuity from a private insurer in that person’s name or sends funds to PBGC for distribution when the participant is found. Companies often have had difficulty finding an insurance company or financial institution willing to accept the funds on behalf of a missing person, and the people who have been missed often have no idea where to look for their benefits.
Auto-Enrolment Has Created a New Generation of Forgotten Pots
The combination of people switching jobs more often and auto-enrolment becoming more commonplace is likely the cause of the increasing number of unclaimed pension pots. Auto-enrolment is a policy success story in many respects. In 2024, about 89 percent of eligible employees in Great Britain were saving into a workplace pension, an estimated 21.7 million people. The flip side is that many of those workers never actively chose a pension, and may not even be aware one was set up in their name.
When someone doesn’t consciously choose to join a scheme, they’re much less likely to track it when they move on. Research shows there are now an estimated 3.3 million lost pots containing £31.1 billion worth of assets in pension pots for which the provider has lost contact with the owner, which has climbed from the 2.8 million pots worth £26.6 billion in 2022. That upward trajectory tracks almost perfectly with the expansion of auto-enrolment over the same period.
What Happens to Unclaimed Pensions Over Time
In the UK, unclaimed pensions usually stay with the original pension provider. If the provider cannot contact you for an extended period of time, usually 15 years, and your assets remain untouched, your pension may be classified as dormant. From there, it can move further away from you.
If the money in a missing participant’s account is not sent to the PBGC, Department of Labor rules permit transfer of the account balance to an Individual Retirement Account in the participant’s name, or to a federally insured bank account, or to a state unclaimed property program. Each transfer adds another layer of complexity for anyone trying to trace the money years later. The trail doesn’t disappear, but it does get longer.
How to Search for What You’re Owed
If you had a traditional pension plan and it no longer exists, you can search the U.S. Pension Benefit Guaranty Corporation database to find your unclaimed pension. You may also want to search the National Registry of Unclaimed Retirement Benefits, a service available nationwide that holds records of account balances unclaimed by former retirement plan participants.
Beginning in 2025, employers who cannot locate a participant in order to pay a forced transfer must report to the Department of Labor where they sent the account balance, so that the participant can later contact the Department and find out where to go to claim the benefit. The nonprofit Pension Rights Center also works with people to track down lost pension plans and may have resources to help your search. In the UK, the government’s free Pension Tracing Service does similar work, matching names and National Insurance numbers to old scheme records.
What Former Employees Should Do Right Now
A 2018 study by the Government Accountability Office revealed that over 25 million participants in workplace retirement plans left at least one account behind between 2004 and 2013. That cohort of workers is now at or approaching retirement age, which makes this a particularly urgent moment to check. Workers can lose track of small retirement plan balances as they change jobs throughout their careers, and this can cost them hard-earned savings.
If you lose track of your pension or pension arrangements, you can rest easy: the money isn’t gone, and you can probably track it down. Start by listing every employer you’ve worked for, then check the relevant national databases. Old payslips, tax documents, or employment contracts can all give you the name of a pension provider. Regardless of whether you have a workplace pension, personal pension, or self-employed pension, you should have been sent a pension record once a year, outlining your contributions and indicating how much income you can expect in retirement. Dig through old emails and paper files before assuming there’s nothing to find.
The Quiet Cost of Doing Nothing
Leaving money unclaimed isn’t a neutral choice. The largest lost pots, worth £13,620 on average, are owned by people at or nearing retirement – precisely the group that can least afford to miss out. A pot that size, invested in even a modest fund, represents years of compounded contributions that you earned through your labor.
The good news is that the infrastructure for finding this money has never been better. Government databases, nonprofit tracing services, and national registries have all expanded significantly between 2024 and 2026. Some people worked for companies that changed names, merged with competitors, or went out of business entirely. Others simply lost track of pension paperwork after multiple moves over several decades. None of that makes the money disappear. It just means you need to go looking for it.
The Takeaway
The pension money you forgot about is probably still there. Sitting in a plan administrator’s system, or transferred to a government holding account, or waiting in a state unclaimed property program – but still yours to claim. The barrier isn’t legal. It’s almost always informational.
Set aside an hour. Pull up the relevant databases. Write down every job you’ve held. The effort is minimal compared to what you might find. For most people, retirement savings are hard won across decades of work, and there’s no good reason to leave any part of that money on the table.
AI Disclaimer: This article was created with the assistance of AI tools and reviewed by a human editor.