SMB With a 401k? Obtain Great Services And Keep Monitoring

May 15, 2026

As small businesses grow, managing human resources, including benefit administration can become overwhelming. With thriving 401k plans becoming ever more sought after and important, it makes good sense for small businesses to lean on service providers. Alas, outsourcing, even to the greatest providers ever, is not a magic wand. Read on for practical guidance on leveraging the know-how of your 401k providers, and following through on the obligations you retain as the plan sponsor.

401k Plans: Who Is Ultimately Responsible for What?

At CWG Advisors, Andrea Pine reassures us that even though the responsibilities of sponsoring a 401k plan can feel overwhelming, it’s possible to succeed: “You don’t have to choose between ignoring your retirement plan and micromanaging every detail. With the right structure and support, retirement plans…can run smoothly.” Outsourcing to experts is a smart move–and even “prudent” given the standards of the Employee Retirement and Income Security Act (ERISA). However, there is a catch: contracting service out doesn’t mean handing over the keys and walking away. Under ERISA, “setting it and forgetting it” isn’t an option. While retirement plan sponsors can delegate work, they retain fiduciary responsibilities, as Pine explains:

Even if you automate every process and pay for every available administrative service, one responsibility always stays with you as the plan sponsor: hiring and monitoring the vendors who touch your plan.

You can lean on retirement planning specialists for guidance, and you can work with a retirement plan consultant to evaluate options and keep an eye on fees and performance. But the decision to hire those vendors and the responsibility for periodically reviewing whether they’re still the right fit remain yours. That’s part of what it means to be a fiduciary for retirement plans for businesses….

Understanding your fiduciary role may be the most important step you can take as a plan sponsor. A strong partner doesn’t remove you from the picture; they make your responsibilities clear, manageable, and less stressful.

Types of Retirement Plan Service Providers?

In addition to contracting for 3(16) administrative services for the retirement plan, sponsors can obtain expertise from 3(21) advisors or 3(38) investment managers. Named for the sections of ERISA which define them, 3(21) and 3(38) fiduciaries are individuals or entities that provide expertise to 401(k) plan sponsors.” A 3(21) advisor can recommend investment options for the plan, and share the related fiduciary liability, but it is ultimately up to the plan sponsor as to whether or not to follow the investment advice. A 3(38) investment manager can go further, using “discretion to make day-to-day investment decisions….”

In sum: a 3(21) advisor shares fiduciary responsibility with the plan sponsor by making recommendations, and leaving final approval to the sponsor, while a 3(38) advisor (or manager) can make certain changes on behalf of the plan sponsor—though the sponsor retains responsibility for choosing and monitoring the service provider.

Even though the fiduciary responsibilities inherent to 401k plan sponsorship cannot be completely delegated, business owners can accomplish a great deal by securing strong service providers for the plan, as Pine reminds us: “You don’t need to be the investment expert, the compliance officer, and the educator. Your job is to select and monitor a capable advisor; their job is to make sure you understand your options and feel confident in the decisions you make.” Observing that many business owners fail to fully leverage their 401k plan vendors, Pine encourages retirement plan sponsors to look to their providers to:

Monitor investment options and fees and recommend changes when appropriate
Track legislative and regulatory changes (including contribution limits) that affect your plan
Provide education and one-on-one support for employees
Help you compare vendors and structures for retirement plans for businesses

No Complaints Does Not Mean There’s Nothing To Do

Successfully outsourcing to 3(21) and or 3(38) advisory professionals, while also outsourcing for 3(16) administrative services, does not mean that retirement plan sponsors have nothing left to do (unless a plan participant complains about something), as attorney Carol Buckmann emphasizes:

ERISA imposes an ongoing responsibility on plan fiduciaries to review the performance and fees of their service providers. This includes the investment professionals who may assist with review of other service providers. The market and fees are always changing, and the Department of Labor recommends that plan fiduciaries do requests for proposals (RFPs) every 3-5 years. Fiduciaries can also benchmark fees and send out requests for information (RFIs) to others in the service field. These activities can also help document that fiduciaries are fulfilling their legal obligation to make sure that the plan fees are reasonable in relation to the services provided.

In addition to reviewing the performance and fees of service providers, a best practice for plan sponsors is to designate time each month to checkup on the retirement plan. For example, professionals at CWG Advisors suggest that at minimal, a regular review of plan operations by plan sponsors should examine:

Newly eligible employees: Are they being identified and added on time?
Timing of payroll deposits: Are Roth, employer contributions, and other contributions moving into the plan promptly and consistently?
Employee status changes: Are terminated employees removed from active payroll feeds?
Notices and deadlines: Are any required communications or filings coming due?

Important To Do: Obtain Fiduciary Liability Insurance

Attorneys at Cohen & Buckmann P.C. have found that failing to understand what service providers can and cannot be responsible for increases the fiduciary liabilities of ERISA plan sponsors, and underscore: “Fiduciaries who educate themselves about their real fiduciary liability exposure can take more proactive steps to reduce their exposure. These steps should include establishing written governance procedures allocating responsibilities and documenting their compliance procedures. Educated fiduciaries can also make sure that they have adequate fiduciary liability insurance coverage. Forewarned is forearmed.”

Fiduciary liability insurance is the only type of insurance that includes defense for retirement plan sponsors in the face of ERISA investigations and lawsuits. Absent fiduciary liability insurance, defense is an out of pocket cost that adds up quickly for retirement plan sponsors, averaging $600 per hour.

To ensure retirement plan sponsors from businesses of every size can protect themselves with fiduciary liability insurance, Colonial Surety Company continues to provide affordable coverage, and even includes cyber liability insurance at no extra cost.

For a few dollars a day, Colonial Surety Company’s Fiduciary+Cyber Liability Insurance bundle arms retirement plan sponsors with:

$1,000,000 for Defense and Penalties if faced with alleged or actual breaches of fiduciary duty.
Cybersecurity Coverage for the business and plan, which addresses Department of Labor recommendations, and includes expert response services to curtail damage after an incident.

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