A practitioner-grade explanation of how ERISA subrogation works in personal-injury settlements: the Supreme Court trilogy (Knudson, Sereboff, McCutchen), self-funded vs insured plan distinction under §514 preemption, the make-whole and common-fund doctrines, and reduction strategies. Updated May 2026.
ERISA subrogation is the single largest reduction to most personal-injury settlement net recoveries — bigger than provider liens, bigger than Medicare set-asides, and bigger than government claimant offsets. A $300,000 settlement with $80,000 in plan-paid medical bills can leave the injured worker with as little as $20,000 after the ERISA reimbursement, attorney fees, costs, and provider liens. Knowing whether your health plan is governed by the Employee Retirement Income Security Act of 1974, whether it is self-funded, and what the plan document actually says about subrogation determines whether you keep two-thirds of your recovery or one-fifth.
This guide is editorial commentary based on U.S. Supreme Court opinions, the ERISA statute text, and U.S. Department of Labor publications. It is not legal advice. The author is a non-attorney individual operator. Consult a licensed personal-injury or ERISA-specialist attorney in your state before negotiating or accepting any plan reimbursement claim.
ERISA, codified at 29 U.S.C. §§1001-1461, governs most private-sector employer-sponsored employee benefit plans. The civil-enforcement provision relevant to subrogation is §502(a)(3), 29 U.S.C. §1132(a)(3), which authorises a plan participant, beneficiary, or fiduciary to bring a civil action "to obtain other appropriate equitable relief … to enforce any provisions of this subchapter or the terms of the plan." The phrase "equitable relief" did most of the work in the Supreme Court's subrogation jurisprudence: the question was whether a plan's claim for reimbursement counts as legal or equitable, since §502(a)(3) authorises only the latter.
In Knudson, the Supreme Court held that a plan's claim for reimbursement out of a settlement was a legal action for money, not an equitable one, when the settlement funds were paid to a trust outside the participant's control. Because §502(a)(3) authorises only equitable relief, the plan's enforcement action failed. Many practitioners and lower courts read Knudson as a near-death blow to ERISA reimbursement claims — only briefly.
Sereboff dramatically narrowed Knudson. The Court held that an ERISA plan may bring an action under §502(a)(3) to enforce an "equitable lien by agreement" on specifically identifiable settlement funds traceable to the participant's recovery. The key elements were: (1) the plan document created a lien at the moment of recovery, (2) the funds were specifically identifiable as the participant's settlement, and (3) the funds remained in the participant's possession or were otherwise traceable. Sereboff opened the door to robust plan recovery and shifted bargaining power decisively to plans.
McCutchen is the most important opinion for understanding how to fight an ERISA lien today. The Court held two things. First, the make-whole doctrine and common-fund doctrine are default rules of equity that can be displaced by clear plan language — meaning, if the plan SPD disclaims them, the plan has super-priority and no attorney-fee reduction. Second, in the absence of plan-language displacement, the common-fund doctrine applies as a default, allowing the participant to reduce the plan's reimbursement by a proportionate share of attorney fees. The lesson: plan-document language is everything. Read the SPD carefully.
ERISA §514 preempts state laws that "relate to" employee benefit plans, but the "savings clause" carves out state laws that regulate insurance. The "deemer clause" then declares that a self-funded plan cannot be "deemed" an insurance company for purposes of state insurance regulation. The combined effect, as explained in FMC Corp. v. Holliday, 498 U.S. 52 (1990): self-funded plans are not subject to state subrogation-limiting laws; insured plans are.
| Feature | Self-funded ERISA plan | Insured ERISA plan |
|---|---|---|
| Who pays claims | Employer (from general assets or VEBA trust) | Insurance company that issued the group policy |
| State subrogation laws apply? | No (preempted by §514) | Yes (saved from preemption) |
| Make-whole doctrine? | Only if NOT disclaimed in SPD | State law controls; many states apply default make-whole |
| Common-fund reduction? | Only if NOT disclaimed in SPD | State law controls; most states recognise |
| Form 5500 disclosure | Yes — Schedule H | Yes — Schedule A |
How to tell which kind you have: request the SPD and look for language like "this plan is self-funded by the Employer" or "benefits are paid from the general assets of the Employer." The Form 5500 filing at efast.dol.gov also discloses funding mechanism — Schedule H (financial information) for self-funded, Schedule A (insurance contracts) for insured. Even when a name-brand insurer's logo appears on the ID card (Aetna, Cigna, Anthem, Blue Cross Blue Shield, UnitedHealth), the plan may be self-funded with the insurer acting only as a Third-Party Administrator (TPA).
Most modern self-funded plan SPDs include "super-priority" language designed to claim everything that McCutchen permits. Common provisions include:
These provisions are enforceable under McCutchen when written clearly. The negotiation question is rarely "can the Plan recover" — it is "how much will the Plan accept to settle the lien short of litigation."
Locate the SPD (the plan administrator must furnish it within 30 days of a written request — failure exposes the plan to a $110-per-day civil penalty under §502(c)(1)). Search the document for the following sections, in this priority:
Highlight every reference to "make-whole doctrine," "common fund," "equitable lien," "constructive trust," "first-dollar priority," and "specific identification." These are the load-bearing words. Cross-reference each against McCutchen and Sereboff.
Even with strong plan language, practical negotiation often yields substantial reductions. The plan administrator weighs the cost of enforcement against the certainty of a negotiated payment. Effective levers include:
Typical negotiated reductions on self-funded plan liens range from 15% on rock-solid plans with clean documentation to 50%+ on plans with procedural defects or contested liability. Always memorialise the reduction in writing through a signed Plan Reduction Agreement before disbursing settlement funds.
Several bad things. First, the plan can sue the participant directly under §502(a)(3) on the Sereboff equitable-lien-by-agreement theory. The plan typically asks for a constructive trust on the settlement funds, an accounting, attorney fees and costs, and injunctive relief. Second, the plan can offset future benefits — denying coverage for unrelated medical claims until the lien is satisfied. Third, the plan can sue the participant's attorney for tortious interference or breach of fiduciary duty if the attorney distributed funds without satisfying the lien (some circuits recognise this; the law varies). Fourth, the participant's signed retainer with the personal-injury attorney typically requires lien satisfaction at disbursement; ignoring the lien can also trigger malpractice exposure to the attorney.
ERISA excludes government plans (federal, state, municipal), most church plans, and most foreign-employer plans. For federal employees enrolled in FEHB plans (Federal Employees Health Benefits Program), the Federal Employees Health Benefits Act (FEHBA) provides its own preemption regime — clarified in Empire HealthChoice v. McVeigh, 547 U.S. 677 (2006). State and municipal employee plans default to state law, which varies dramatically. Tricare plans (military) have their own statutory subrogation regime under 10 U.S.C. §1095.
Medicare and Medicaid liens are not subrogation in the ERISA sense, but operate through their own federal statutes (42 U.S.C. §1395y(b) for Medicare; 42 U.S.C. §1396a(a)(25) for Medicaid). Both require lien resolution before settlement disbursement and have their own reduction frameworks (Medicare's Final Demand process, Medicaid's Arkansas Dept. of Health & Human Servs. v. Ahlborn, 547 U.S. 268 (2006) framework). These are addressed in separate guides.
ERISA subrogation is an employer health plan's right to be reimbursed from a personal-injury settlement for medical bills the plan paid. It is governed by ERISA §502(a)(3) and the Supreme Court's Sereboff and McCutchen opinions. For self-funded plans, the right typically has super-priority and is not reducible by state-law equitable doctrines absent plan-language ambiguity.
Self-funded plans are not subject to state subrogation-limiting laws (ERISA §514 preemption). Insured plans are subject to state insurance regulation through the savings clause. Self-funded plans therefore have a much stronger reimbursement position than insured plans.
The make-whole doctrine is the equitable principle that a subrogating insurer cannot recover until the injured person has been fully compensated. McCutchen held it is a default rule that can be displaced by clear plan language. Most modern self-funded plan SPDs include the disclaimer.
The common-fund doctrine entitles the party whose attorney recovered a settlement to a proportionate reduction from any other party who benefits from the recovery, equal to that party's share of attorney fees and costs. McCutchen held it is also a default rule that can be displaced by plan language.
Yes. Typical negotiated reductions on self-funded plan liens range from 15% to 50%, depending on procedural defects, plan-language ambiguities, liability uncertainty, and the cost-benefit of plan enforcement. Always memorialise reductions in a signed Plan Reduction Agreement.
Request the Summary Plan Description (SPD) from your employer's HR or plan administrator — federal law requires they provide it within 30 days of a written request. The SPD identifies ERISA coverage and funding mechanism. Form 5500 filings at efast.dol.gov also disclose.
No. ERISA expressly excludes government plans (federal, state, municipal), most church plans, and most foreign-employer plans. Federal employee FEHB plans follow FEHBA preemption under Empire HealthChoice v. McVeigh; state and municipal plans default to state law.
The plan can sue under §502(a)(3) for a constructive trust on the funds, an accounting, and attorney fees. The plan can also offset future benefits. The participant's personal-injury attorney can face malpractice exposure for distributing funds without satisfying the lien.
NOT legal advice, NOT a law firm, NOT a notario.
SettlementCalculator is operated by Mustafa Bilgic, an individual non-attorney operator (Malazgirt No: 225, 02000 Adıyaman, Türkiye). The author is not a lawyer, not licensed to practice law in any jurisdiction, and does not provide legal advice. This article is editorial commentary based on publicly available U.S. Supreme Court opinions, ERISA statute text, and U.S. Department of Labor publications current as of May 23, 2026. Statutory and judicial interpretation may have changed since this date; verify the current state of the law with a licensed attorney before negotiating or accepting any ERISA plan reimbursement claim.