What is a health plan fiduciary?
Last updated October 2, 2026
A health plan fiduciary is anyone with discretionary authority over an ERISA health and welfare plan's management, administration, or assets. That includes employers sponsoring group health plans, plan administrators, and committee members — regardless of job title, it's the function that makes you a fiduciary.
Under ERISA, fiduciary status is defined by what you do, not what your title says. If you exercise discretion over how a group health plan is run — choosing vendors, deciding claims appeals, controlling plan assets, or interpreting plan terms — you are a fiduciary for those functions.
Common health plan fiduciaries include:
- The employer (plan sponsor) and its officers who make plan decisions
- The named plan administrator listed in the plan document
- Members of a benefits or fiduciary committee
- Anyone hiring and monitoring service providers like TPAs, brokers, or carriers
Signing paperwork or performing purely ministerial tasks — processing enrollments, applying clear plan rules — does not by itself create fiduciary status. But most employers underestimate how many of their day-to-day benefits decisions are fiduciary acts, which is why documenting a clear governance structure matters.
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