If your name is on the 401(k) plan as a named fiduciary, ERISA holds you to a standard most plan sponsors don't realize they've signed up for: act solely in the interest of plan participants, with the care, skill, and diligence of a prudent expert. Personal liability is real. Department of Labor (DOL) investigations are real. Plaintiffs' firms looking for excessive-fee class actions are real.
What protects you is process — not perfect investment selection. A documented annual review is the single highest-leverage thing a plan sponsor can do.
The annual review, in seven items
- Review fees in writing. All-in plan costs (recordkeeping, administration, advisor, investment expense) should be benchmarked against similar-sized plans and documented. "Reasonable" is the legal standard, not "lowest."
- Review the investment menu. Each fund should be measured against its benchmark, peer group, and performance history. A documented Investment Policy Statement makes this defensible.
- Review the QDIA. The Qualified Default Investment Alternative — usually a target-date fund family — sits behind every auto-enrolled participant. Is it still appropriate?
- Check participation and deferral rates. Low participation may signal weak education. Low deferrals may signal a need for auto-escalation.
- Review the service providers. When did you last re-bid the recordkeeper? Three years is reasonable; ten years is rarely defensible.
- Confirm timely compliance work. Form 5500 filed on time, plan audit complete (if required), non-discrimination testing passed.
- Update the fiduciary file. Every meeting agenda, every minute, every signed Investment Policy Statement, every service provider review — in one place, in chronological order.
ERISA does not require that you outperform the market. It requires that you document a prudent process. Plans get sued for sloppy files, not for picking a fund that underperformed for a year.
Where most plan sponsors fall short
- No written Investment Policy Statement — or one that hasn't been updated in five years.
- No annual fee benchmark beyond "the vendor says it's competitive."
- Investment Committee meetings without minutes — or meetings that don't happen at all.
- Service-provider relationships that auto-renew without periodic competitive review.
- No documented education program for participants — which becomes a problem when participation rates lag.
Where a fiduciary advisor helps
A fee-based plan advisor with a 3(21) or 3(38) fiduciary role can share the liability — accepting fiduciary status alongside the plan sponsor and providing the documentation backbone that ERISA requires. The combination doesn't eliminate the plan sponsor's responsibility, but it dramatically reduces it.
If you're not sure where your current plan stands on any of the seven items above, the fix is straightforward: a one-meeting plan review, a refreshed fiduciary file, and a documented annual rhythm. The cost is small. The protection is meaningful.
