A clear look at 5 essential plan sponsor responsibilities to support plan oversight through market turbulence and shifting headlines.
Most 401(k) fiduciary decisions don’t feel risky in the moment; they feel routine. Committees aren’t questioned because of one bad decision. More often, it’s because a consistent process wasn’t clearly demonstrated.
That’s why it’s smart to regularly ask, “Can we show how that decision was made?”
Scrutiny continues to increase. Lawsuits alleging excessive fees are becoming more frequent and costly. In 2025, the average excessive fee settlement reached $4.42 million.[1]
Recent headlines may make it feel like the rules are constantly changing. You may have read that the Department of Labor (DOL) has returned to the 5-part fiduciary test. The DOL aims to renew focus on alternative assets like private equity, private credit, real estate, and “asset neutral” investment selection frameworks.
To get technical for a moment:
- The five-part test defines who is considered a fiduciary when providing investment advice.
- The five fiduciary duties outlined here define how fiduciaries are expected to act once they gain responsibility.
Thus, two different frameworks, and both are important when overseeing your 401(k) plan. While regulatory definitions may evolve, the expectations around fiduciary behavior have remained remarkably consistent over time. Let’s look at what they are and how they show up within your retirement plan.
1. Loyalty: keeping participants at the center
The duty of loyalty requires that decisions be made in the best interest of your plan’s participants and their beneficiaries.
In practice, this shows up in questions like:
- Are fees aligned with participant value?
- Are investment options selected based on merit, not familiarity?
- Are conflicts identified and managed appropriately?
A quick pro tip: If a decision is difficult to explain to a participant, it’s probably worth revisiting and well documenting.
2. Prudence: supporting thoughtful decision-making
Prudence is less about being right and more about having a sound process.
Fiduciaries are expected to approach decisions with care, using available information, comparing options, and seeking expertise when appropriate.
This often includes:
- reviewing performance and fee data
- considering alternative options
- monitoring decisions over time
In fiduciary governance, the question isn’t just “What did you decide?” Rather, it’s “How did you get there?”
3. Diversification: providing balanced investment options
Diversification is about managing risk and not predicting the next bull market.
For plan sponsors, this typically means offering a range of investment options across asset classes and risk levels, allowing participants to build portfolios aligned with their needs.
A few practical checks:
- cover major asset classes?
- provide appropriate risk levels?
- avoid unnecessary overlap?
Too few options can limit choices, but too many create decision paralysis. The goal is balance.
4. Following plan documents: maintaining operational alignment
The plan document outlines how the plan is designed to operate.
Fiduciaries are expected to follow these provisions consistently, including areas such as eligibility, contributions, and distributions.
In reality, this is where small misalignments can creep in:
- “We’ve always done it this way…”
- “I think that’s how the plan is set up…”
- “What’s our definition of compensation again…”
Those are usually signs that it’s time for a review.
With Cycle 4 restatements on the horizon, this is a natural opportunity to revisit plan design and confirm that operations align with both the document and your broader workplace goals.
5. Fee reasonableness: monitoring costs and services
Fiduciaries are responsible for reviewing plan fees and determining reasonableness in relation to the services provided.
This involves:
- understanding the full scope of plan-related fees
- reviewing service levels and deliverables
- comparing costs to similar plans when appropriate
Fee oversight is not a one-time exercise; it’s an ongoing responsibility. Regular reviews help confirm that your plan remains competitive and aligned with your participants’ needs.
Fiduciary oversight in action
In practice, these duties don’t show up as big, dramatic decisions. They show up in small, consistent actions.
- It’s the moment someone asks, “When was the last time we benchmarked this?”
- It’s pausing before approving a change and saying, “Do we have documentation for this?”
- It’s revisiting something that’s been on autopilot a little too long.
Individually, moments like these seem minor. Collectively, they define fiduciary oversight. In essence, they provide stability, even when everything else feels uncertain.
Markets will fluctuate and headlines will change, but a disciplined fiduciary process creates consistency through it all.
If you’d like to evaluate how your current process aligns with these fiduciary duties, we are here as your support. Connect with our team and we can walk through it together.
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Paul H. Etra, AIF®
Founder & President
101 Crawfords Corner Rd, Suite 4116
Holmdel, NJ 07733
Securities offered through LPL Financial. Member FINRA/SIPC. Investment advice offered through IHT Wealth Management, a registered investment advisor. IHT Wealth Management and Bridge Benefits Group are separate entities from LPL Financial.
This information is provided as a general guide to educate plan sponsors. It is not intended as authoritative guidance or tax/legal advice. Each plan has unique requirements, and you should consult your attorney or tax advisor for guidance on your specific situation.
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