The ERISA statute of limitations depends entirely on what kind of claim you’re bringing. If you’re suing a plan fiduciary for mismanaging assets or breaching their duties, federal law gives you six years from the wrongful act or three years from when you actually learned about it, whichever expires first. If you’re suing over a denied benefit, there’s no federal deadline at all: courts borrow one from state law, or enforce whatever shorter deadline your plan document imposes. Miss the applicable window and your case gets dismissed before a judge ever considers whether you were right.
Fiduciary Breach Claims: The Six-Year and Three-Year Rules
The clearest deadline in ERISA sits in 29 U.S.C. ยง 1113. It creates a two-tier system for claims that a fiduciary mismanaged plan assets or violated their duties.1Office of the Law Revision Counsel. 29 USC 1113 – Limitation of Actions
The outer limit is six years. If the breach involved an affirmative act, the clock runs from the date of the last action that was part of the breach. If it involved a failure to act, six years runs from the latest date the fiduciary could have corrected the problem.
A shorter three-year window applies once a participant gains “actual knowledge” of the breach. That clock starts on the earliest date you became aware of the facts underlying the violation, and it can cut the outer six-year period short. Learn about the breach in year two and you have until year five, not year eight. Never learn about it and the six-year cap still applies.
This framework covers the full range of Part 4 fiduciary violations: self-dealing, imprudent investment decisions, and prohibited transactions between the plan and parties with a conflict of interest.
What “Actual Knowledge” Actually Requires
For years, employers argued that mailing disclosures was enough to start the three-year clock, whether or not participants read them. The Supreme Court shut that down in Intel Corp. v. Sulyma (2020), holding that a plaintiff does not have actual knowledge of a breach just because the relevant information appeared in documents they received but didn’t read or can’t recall reading. The participant must have genuinely become aware of the facts showing a breach occurred.2Supreme Court of the United States. Intel Corp. Investment Policy Committee v. Sulyma
Evidence that you received disclosures still matters. It just isn’t automatic proof. If you received years of detailed statements showing the very facts you now say you didn’t know, a court will be skeptical when you claim ignorance.
Denied Benefit Claims: Borrowed State Deadlines
Section 1132(a)(1)(B) lets participants sue to recover benefits, enforce plan rights, or clarify future benefits. It says nothing about how long you have to file.3Office of the Law Revision Counsel. 29 USC 1132 – Civil Enforcement
Federal courts fill the silence by borrowing the most analogous statute of limitations from the state where you file. Most reach for the state’s breach of contract deadline, which usually runs three to six years. The same denial can give you three years in one state and six in another.
Plan-Imposed Deadlines Usually Control
Here’s the trap. Your plan can impose its own filing deadline that’s shorter than state law would allow, and the Supreme Court has said those contractual limits are enforceable if they’re reasonable. Many employer plans require suit within one to three years after denial.
In Heimeshoff v. Hartford Life (2013), the Court upheld a plan provision that started the limitations clock when proof of loss was due, not when the final denial came down. The test is whether the contractual period leaves you enough time after finishing the internal appeal process to actually file suit. A plan that eats the entire window with its own appeals process may be found unreasonable; one that leaves a meaningful post-appeal filing window will generally stand.4Justia. Heimeshoff v. Hartford Life and Accident Ins. Co., 571 US 99
Read your Summary Plan Description before you assume anything. The deadline buried in that document is almost certainly the one that governs your case.
When the Clock Starts Running
Identifying the right deadline does you no good if you misjudge the start date. ERISA uses different accrual rules for different claim types.
Benefit Denials: Clear Repudiation
For a denied benefit claim, courts generally apply the “clear repudiation” rule. The clock starts when you receive unambiguous notice that your claim has been denied. In most cases that’s the plan’s final decision after internal appeals.5FindLaw. Thompson v. Retirement Plan for Employees of S.C. Johnson and Son Inc.
Repudiation doesn’t have to arrive as a denial letter. If you receive a lump-sum distribution that falls short of what you believe you’re owed, some courts treat that payment itself as a clear repudiation of any greater entitlement. The trigger is anything concrete telling you the plan won’t honor the claim you have in mind.
Fiduciary Breaches: Act Date and Discovery Date
For fiduciary breach claims, the six-year clock runs from the wrongful act itself, not from when you noticed the fallout. A bad investment decision made in January 2020 started the clock that month, even if the loss didn’t surface on your statement until much later.1Office of the Law Revision Counsel. 29 USC 1113 – Limitation of Actions
The three-year clock is different: it turns on your actual awareness of the underlying facts. You don’t need to know the law was broken. You need to know the facts a reasonable person would recognize as a problem. A statement showing a dramatic unexplained loss can be enough.
Interference and Retaliation Claims
ERISA also makes it illegal for an employer to fire, discipline, or discriminate against you for exercising your benefit rights, or for testifying in an ERISA-related investigation. The textbook example is terminating a worker just before their pension vests.6Office of the Law Revision Counsel. 29 USC 1140 – Interference With Protected Rights
Section 510 claims carry the same limitations problem as benefit denials: no federal deadline. Courts borrow from state law, but here they typically look to wrongful termination or retaliatory discharge statutes rather than breach of contract. Results vary sharply by jurisdiction, and in some states the borrowed deadline can be as short as one year. The clock generally starts on the date of the adverse employment action itself.7U.S. Department of Labor. Enforcement Manual – Participants Rights
If you suspect you were fired or penalized to block your benefits or punish you for asserting them, move quickly.
Fraud, Concealment, and Equitable Tolling
The Fraud and Concealment Exception
The six-year outer limit for fiduciary breaches has one significant exception. When a fiduciary actively conceals the breach or uses fraud to keep you from discovering it, you get six years from discovery rather than six years from the act.1Office of the Law Revision Counsel. 29 USC 1113 – Limitation of Actions
Passive silence doesn’t qualify. You have to show affirmative concealment: falsified account statements, destroyed records, deliberately misleading answers to your questions about plan performance. Once you discover the fraud, the new six-year window is firm.
Equitable Tolling
Separately, courts can pause the filing clock through equitable tolling when extraordinary circumstances prevented a diligent participant from filing on time. The doctrine applies to both the statutory Section 1113 deadlines and to contractual deadlines in plan documents.4Justia. Heimeshoff v. Hartford Life and Accident Ins. Co., 571 US 99
Courts treat tolling as a narrow escape valve. Recognized situations include severe mental incapacity that left a participant unable to manage their affairs and egregious attorney misconduct that prevented a timely filing. You have to show both something genuinely extraordinary and that you weren’t sitting on your hands. Tolling also cannot revive a claim that was already time-barred before the extraordinary circumstance arose.
Exhaust Internal Appeals First
One boundary worth flagging: the limitations period isn’t the only timing rule you face. Before you can file a federal lawsuit over a denied benefit, you generally must complete the plan’s internal appeal process. Skip that step and a court will likely dismiss your case for failure to exhaust administrative remedies.
Federal regulations set minimum times for you to appeal internally: at least 60 days from a denial notice for retirement and pension plans, and at least 180 days for group health and disability plans. Plans can offer more time but not less.8eCFR. 29 CFR 2560.503-1 – Claims Procedure
There’s one participant-friendly wrinkle. If the plan administrator fails to follow the required claims procedures, you’re deemed to have exhausted your remedies automatically and can go straight to court. The plan’s procedural failure lifts the exhaustion requirement, which matters when a slow-moving administrator threatens to run out your contractual filing clock.