401(h) Plans and ERISA: Fiduciary, Reporting, and Plan Asset Considerations
ERISA touches 401(h) at every stage — fiduciary duty, plan-asset handling, reporting, and participant communications. None of it is optional.
Key takeaways
- ERISA fiduciary duties apply to the 401(h) sub-account.
- Plan-asset rules apply to assets allocable to the sub-account.
- Form 5500 reporting reflects the plan's full structure including 401(h).
- SPDs should clearly describe retiree medical benefits.
Fiduciary duty
Plan fiduciaries owe the duty of prudence and loyalty to participants, including in the management of 401(h) assets. Decisions about investment, vendor selection, and benefit administration are fiduciary acts.
Plan-asset rules
Assets allocable to the 401(h) sub-account are plan assets. The prohibited transaction rules and trust requirements apply.
Reporting
Form 5500 disclosures should reflect the underlying plan's full structure including the 401(h) feature. Coordination between actuary, TPA, and ERISA counsel is the norm.
Communications
Summary Plan Descriptions and other participant communications should clearly describe the retiree medical benefit and how to claim it.
Frequently asked questions
Availability, tax treatment, and plan design depend on the facts and circumstances of the employer, plan document, participant group, and applicable law. 401h.com provides general educational information only — not tax, legal, actuarial, investment, or ERISA advice. Consult qualified tax, legal, actuarial, and plan professionals.
401h.com Editorial
401h.com
The 401h.com editorial team publishes plain-English explainers on 401(h) retiree medical benefit plans. Educational only — not tax, legal, actuarial, investment, or ERISA advice.
Related articles
401(h) Plan Fiduciary Duties: A Plain-English Overview
Plan fiduciaries owe the same duties for 401(h) assets as for the retirement portion. Here's how those duties show up in practice.
401(h) Plans and Form 5500: What Gets Reported and Where
401(h) doesn't file its own Form 5500 — it shows up inside the underlying qualified plan's filing. Here's how it typically appears.
401(h) Plan Rules: What Business Owners and Advisors Need to Know
401(h) accounts are powerful but rule-driven. Five buckets — documentation, accounting, incidental benefit, nondiscrimination, and funding — determine whether the structure stands up.