If your employer is closing a defined benefit pension plan, the pension you have already earned is protected by federal law — what changes is whether you keep accruing more, how you eventually get paid, and whether the Pension Benefit Guaranty Corporation’s (PBGC) caps come into play. The first thing to pin down is which kind of closure is actually happening, because “closing” covers three very different events with very different consequences for you.
Freeze or Termination: Figure Out Which One
Employers use “closing” loosely. Federal pension law does not.
- A soft freeze shuts the plan to new hires while current participants keep earning benefits. Your pension continues to grow with each year of service.
- A hard freeze stops all future accruals for everyone. You keep what you have built up, but additional years on the job no longer increase your benefit. The plan itself continues to exist and hold assets to pay benefits at retirement.
- A full termination winds the plan down completely. All benefits vest immediately, assets are distributed through annuity purchases or lump sums, and the plan ceases to exist.
The distinction matters because a frozen plan can be unfrozen later if the employer’s finances improve; a terminated plan is gone for good. A freeze by itself does not trigger the PBGC termination process. A full termination always does.
What’s Protected No Matter What
Two separate federal rules protect what you have already earned, and both apply regardless of which path your employer takes.
The Anti-Cutback Rule
Under 29 U.S.C. § 1054(g), your accrued benefit cannot be decreased by a plan amendment. The protection reaches past the basic monthly amount: eliminating an early retirement benefit, removing a retirement-type subsidy, or taking away an optional payment form you were entitled to all count as impermissible reductions of your accrued benefit.1Office of the Law Revision Counsel. 29 USC 1054 – Benefit Accrual Requirements The IRS enforces the parallel rule under Internal Revenue Code Section 411(d)(6), which prohibits amendments that add new restrictions or conditions on benefits you have already accrued.2Internal Revenue Service. Guidance on the Anti Cutback Rules of Section 411d6
A freeze can stop future accruals. It cannot reach back and reduce what you have already built up. Every dollar of pension earned through the freeze date remains a legally enforceable obligation.
Full Vesting on Termination
When a plan fully or partially terminates, every affected employee immediately becomes 100% vested in their accrued benefit, no matter how many years they have worked.3Internal Revenue Service. Retirement Plan FAQs Regarding Partial Plan Termination This is one of the most valuable protections in pension law. If you had three years of service and were 60% vested under the plan’s schedule, termination makes you 100% vested instantly.
The same protection applies in a partial termination, which the IRS may find when a significant share of participants loses coverage through layoffs, a plant closing, or a plan amendment. There is no bright-line percentage, but workforce reductions of 20% or more often trigger a partial termination finding.
Notices You Should Receive Before Anything Happens
Federal law requires your employer to tell you what is coming before future accruals are reduced or eliminated. The type of closure determines which notices apply and how far in advance they must arrive.
Freezing Future Accruals
When a plan is amended to significantly reduce or stop future benefit accruals, ERISA Section 204(h) requires written notice to every affected participant. For most plans the notice must arrive at least 45 days before the amendment takes effect. Small plans with fewer than 100 participants who have accrued benefits get a 15-day window, as do multiemployer plans and amendments tied to corporate acquisitions.4eCFR. 26 CFR 54.4980F-1 – Notice Requirements for Certain Pension Plan Amendments Significantly Reducing the Rate of Future Benefit Accrual
The notice cannot be vague. It has to describe the benefit formula before and after the change, state the effective date, and give you enough information to estimate the size of the reduction to your future benefits. It must be written so an average participant can understand it, not buried in actuarial jargon.4eCFR. 26 CFR 54.4980F-1 – Notice Requirements for Certain Pension Plan Amendments Significantly Reducing the Rate of Future Benefit Accrual
Terminating the Plan
A full termination adds a separate layer of notices. The plan administrator must issue a Notice of Intent to Terminate (NOIT) to every affected party at least 60 days, and no more than 90 days, before the proposed termination date.5eCFR. 29 CFR 4041.23 – Notice of Intent to Terminate The NOIT identifies the plan, states that the administrator intends to terminate it on a specific date, and explains that plan assets must be sufficient to cover all benefits for the termination to proceed. It also has to tell participants already receiving monthly checks whether their payment amounts will change.6eCFR. 29 CFR Part 4041 – Termination of Single-Employer Plans
Separately, you should receive a Notice of Plan Benefits detailing your individual benefit amount, then a Notice of Annuity Information at least 45 days before the distribution date, and finally a Notice of Annuity Contract within 30 days after the contract becomes available.7Pension Benefit Guaranty Corporation. Standard Terminations
Penalties If Notices Are Skipped
Under ERISA Section 502(c), a plan administrator who fails to furnish required information to a participant can be held personally liable for up to $100 per day for each participant not notified.8Office of the Law Revision Counsel. 29 USC 1132 – Civil Enforcement The Department of Labor adjusts those statutory penalties for inflation, and separate penalties apply to failures to notify participants of benefit restrictions, where the most recently published inflation-adjusted amount runs up to $2,112 per day per affected participant.9U.S. Department of Labor. Fact Sheet – Adjusting ERISA Civil Monetary Penalties for Inflation
How You’ll Be Paid If the Plan Terminates
When a plan terminates, you will usually choose between two payout forms.
- With an annuity, the plan buys a contract from an insurance company on your behalf. You receive guaranteed monthly payments for life, mirroring the pension you would have received. The payment obligation shifts from the plan to the insurer.
- With a lump sum, you receive the present value of your entire future pension as a single payment. You can roll it directly into an IRA or another qualified plan like a 401(k) and defer taxes until you withdraw the money in retirement. A direct rollover avoids the 20% mandatory withholding that applies to distributions paid to you.
This is one of the most consequential financial decisions a participant faces. An annuity gives you income you cannot outlive. A lump sum gives you control and flexibility but shifts investment risk and longevity risk entirely onto you. People routinely underestimate how long they will live and how quickly they can spend a seemingly large one-time payment.
Who’s Backing Your Annuity
If the plan offers annuities, the plan’s fiduciaries have a legal duty to pick an insurer carefully. Under Department of Labor Interpretive Bulletin 95-1, fiduciaries must evaluate the annuity provider’s ability to pay claims and overall creditworthiness. The DOL has flagged concerns about certain insurer practices that could expose annuitants to excessive risk, including heavy reliance on affiliated or offshore reinsurance and concentration in non-traditional assets.10U.S. Department of Labor. US Department of Labor Issues Report to Congress on Considerations for Defined Benefit Pension Plan Fiduciaries Choosing an Annuity Provider Once your pension is annuitized, your payment security depends on the financial strength of the insurance company, not the PBGC. State insurance guaranty associations provide a backstop, but coverage limits vary.
Reading a Lump Sum Offer
Lump sum calculations are not arbitrary. IRC Section 417(e)(3) sets minimum present value standards using three interest rate “segments” the IRS publishes monthly. Higher rates produce smaller lump sums because less money today can grow to match the future payments; lower rates produce larger ones.
For plans using rates from early 2026, the IRS segment rates are roughly 4.0% for the first segment (covering the first five years of payments), 5.2% for the second (years six through twenty), and 6.1% for the third (payments beyond twenty years).11Internal Revenue Service. Minimum Present Value Segment Rates These are relatively high compared to the near-zero environment of the early 2020s, so lump sum values in 2026 are generally lower than they were a few years ago for an identical benefit. Some plans pay exactly the statutory minimum; others use more generous assumptions. Ask for the plan’s assumptions in writing and compare the offer to the IRS minimum before deciding.
When the PBGC Steps In
If a plan does not have enough assets to pay all its promised benefits, the PBGC takes over, typically as trustee, and pays benefits directly subject to statutory limits. That happens either through a distress termination the employer applies for after proving severe financial hardship, or through an involuntary termination the PBGC initiates under ERISA Section 4042 — for example, when a plan cannot pay benefits currently due.12Pension Benefit Guaranty Corporation. Disclosure of Distress Termination Information An involuntary termination can proceed even if the employer is bound by a collective bargaining agreement to maintain the plan.
What the PBGC Actually Guarantees
The PBGC guarantees most pension benefits, but with caps that matter to higher-paid participants and to anyone retiring early.
For 2026, the maximum monthly benefit the PBGC guarantees for a participant retiring at age 65 under a straight-life annuity is $7,789.77. For a joint-and-50%-survivor annuity with a same-age spouse, the cap is $7,010.79.13Pension Benefit Guaranty Corporation. Maximum Monthly Guarantee Tables If your promised pension is below the threshold, the PBGC covers it in full (assuming the benefit otherwise qualifies). Above the cap, you receive only the guaranteed maximum.
The guarantee drops significantly at earlier retirement ages because the formula accounts for more years of expected payments. At age 55, the 2026 straight-life maximum is $3,505.40. At age 50, it is $2,726.42.13Pension Benefit Guaranty Corporation. Maximum Monthly Guarantee Tables If you were planning to retire well before 65, the safety net is considerably smaller than the headline figure suggests.
The Phase-In Limit on Recent Increases
The PBGC also limits its guarantee for any benefit increases adopted within five years of the plan’s termination date. For each full year the increase was in effect before termination, the PBGC guarantees the greater of 20% of the increase or $20 per month, up to the actual increase. A benefit boost in place for only one year before termination is guaranteed at just 20% of the increase or $20 per month, whichever is more. By the fifth year, the full increase is guaranteed.14Pension Benefit Guaranty Corporation. What Is the Phase-In Limit The rule exists to stop employers from sweetening benefits right before dropping an underfunded plan on the PBGC.
If Your Plan Is a Multiemployer (Union) Plan
Multiemployer plans, common in unionized industries like construction and trucking, work differently. When an employer stops contributing to an underfunded multiemployer plan, it triggers withdrawal liability under the Multiemployer Pension Plan Amendments Act of 1980. The departing employer owes its proportionate share of the plan’s unfunded vested benefits, based on the ratio of its past contributions to total contributions from all employers. A complete withdrawal happens when an employer permanently stops its contribution obligation or ceases all covered work; a partial withdrawal can be triggered by a 70% or greater decline in contribution base units over a three-year testing period.
For participants, the practical point is that remaining employers absorb the departing employer’s share of the funding gap, which can strain the plan’s finances and affect benefit security for everyone covered by it.
What to Do Now
Read every notice your employer sends, especially the 204(h) notice or the NOIT. These documents carry deadlines and benefit figures that directly affect your retirement income. If the numbers look wrong, challenge them immediately rather than waiting until distribution.
Request a benefit statement showing your accrued benefit as of the freeze or termination date. Compare it against your own records of service years and salary history. Census-data errors are more common than most people realize, and fixing one before assets are distributed is far easier than correcting one afterward.
If you are offered a lump sum, get the plan’s assumptions in writing and compare the offer to the IRS minimum present value. Before locking in the lump-sum-versus-annuity choice, consider a fee-only financial planner who does not earn commissions on rollovers. The right answer depends on your health, your spouse’s financial situation, your other retirement savings, and whether you trust yourself to manage a large sum over decades. Pension attorneys typically charge $350 to $750 per hour for termination-related work, but even a single consultation can prevent a six-figure mistake.