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Fiduciary Liability

Definition

Fiduciary liability insurance covers claims that those who manage an employee benefit plan, such as a 401(k), breached their duties, for example through mismanagement. It typically pays defense costs and covered damages, and is distinct from the ERISA fidelity bond.

Last updated October 13, 2026

How fiduciary liability works

Under ERISA, plan fiduciaries must act solely in the interest of participants and beneficiaries, with the care and prudence of a knowledgeable professional, while diversifying investments and following plan documents. A fiduciary who breaches those duties can be personally required to restore plan losses and any profits made from plan assets, and courts can order other relief, including removal.

ERISA voids provisions that try to relieve a fiduciary of liability, but it allows insurance. A policy bought by the plan itself must permit the insurer to seek recourse against a fiduciary who breaches. Employers and fiduciaries can also buy coverage themselves. Policies typically cover the plan sponsor, the plan, and individuals involved in administering it, subject to policy terms.

Fiduciary insurance vs. the ERISA bond

Policies commonly define the insured persons broadly, but the details vary, including whether the sponsoring entity, trustees, plan committee members, and employees who help administer the plan are covered. Some policies also include sublimits for specific regulatory or penalty exposures.

Who is a fiduciary

Under ERISA, a person is generally a fiduciary to the extent they exercise discretionary authority or control over a plan's management or assets, or provide investment advice for a fee, whatever their job title. Fiduciaries often include the plan sponsor, the plan administrator, trustees and members of an investment or benefits committee. Because status depends on the function performed, the people who actually choose investments or service providers can be fiduciaries even if no one has named them in writing. Whether a particular person is a fiduciary is a legal question, and counsel can advise.

Example

A hypothetical startup sponsors a 401(k). Participants allege that the committee selected costly funds and failed to monitor them. The policy may respond to defense costs and a covered settlement, subject to the retention, limit, and exclusions such as intentional misconduct.

What to watch for

Fiduciary liability vs. related terms

A second example: a late contribution deposit

A hypothetical company discovers that, for several pay periods, it deposited employee 401(k) contributions into the plan later than it should have. It reports the matter to its fiduciary liability insurer and engages counsel. The policy may respond to defense costs if a participant or a government agency asserts a claim. The cost of restoring lost earnings to participants is often the company's own obligation and may not be covered, and costs of a voluntary correction program may be covered only up to a sublimit, if at all. Which of these applies depends on the policy, so the company's broker had reviewed the wording before the policy was bound.

Questions to ask your broker or underwriter

Common mistakes

Why it matters for technology, AI, fintech and digital-asset companies

Venture-backed companies often set up a 401(k) once they begin hiring. The company and the people who choose or oversee plan providers can become fiduciaries with personal exposure. This coverage is commonly considered alongside directors and officers and employment practices coverage.

A venture-backed company often adopts a 401(k) once it begins hiring, and the people who pick plan providers, investments or a payroll partner may become fiduciaries without realizing it. Founders, finance leads and HR leaders on a benefits committee can carry personal exposure for those decisions. Health and welfare plans can add more. Fiduciary liability is commonly reviewed alongside employment practices and D&O as part of a management liability program. See venture-backed startups.

See how this applies in practice: D&O insurance for startups.

Related terms

Frequently asked questions

What is fiduciary liability insurance?

Fiduciary liability insurance covers claims that those who manage an employee benefit plan, such as a 401(k), breached their duties, for example through mismanagement. It typically pays defense costs and covered damages, and is distinct from the ERISA fidelity bond.

Is fiduciary liability insurance required?

No. ERISA generally requires a fidelity bond for most plans, which protects against theft or fraud, but it does not require fiduciary liability insurance. The two address different risks, so having a bond does not mean claims of mismanagement are insured.

Does D&O insurance cover fiduciary claims?

Not necessarily. Many directors and officers policies exclude ERISA-related claims or cover them only through a fiduciary extension with a limit of its own. Confirm in the policy whether fiduciary coverage is included, and at what limit.

Can plan fiduciaries be personally liable?

Yes. ERISA provides that a fiduciary who breaches its duties can be personally liable to restore plan losses and any profits gained from plan assets, and courts may order other relief. Insurance can help fund defense and covered damages but has limits and exclusions.

Who is covered by fiduciary liability insurance?

Typically the plan sponsor, the plan, and the individuals who help administer it, such as committee members and trustees, but the definitions vary. Confirm who counts as an insured and whether employees who assist with plan administration are included.

Does fiduciary liability insurance cover investment losses in a 401(k)?

Not the losses themselves. The policy generally responds to claims that fiduciaries breached their duties, such as imprudent selection of investments, by paying defense costs and covered damages. Market declines alone are not a covered claim.

Does a small company with a 401(k) need fiduciary liability insurance?

It is not generally required, but fiduciary duties apply to plans of any size, and individuals can be personally liable. Many companies buy it once they sponsor a plan, often with D&O or EPL. Whether it makes sense depends on plan size, governance and budget.

Does fiduciary insurance cover government investigations of a plan?

Sometimes. Some policies cover defense costs for certain investigations of a plan, often with a sublimit, and may cover fees under voluntary correction programs. Coverage and limits vary, so check the policy terms before an issue arises.

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