Fiduciary Outsourcing in PEPs: What Remains with the Employer

Posted on 2026-04-01 11:25:59

Fiduciary outsourcing within Pooled Employer Plans (PEPs) has emerged as one of the most significant shifts in retirement plan administration since the SECURE Act introduced the framework in 2019. For many employers—especially small and mid-sized organizations—the appeal is clear: simplified operations, reduced fiduciary burden, and access to institutional-quality services without managing a full in-house 401(k) plan structure. Yet even when a Pooled Plan Provider (PPP) centralizes much of the plan governance and fiduciary oversight, employers do not hand off everything. Understanding what you can outsource—and what you keep—is essential https://penzu.com/p/a6603da0f6c35646 for risk management, ERISA compliance, and a successful employee experience.

This article explains how fiduciary outsourcing works in a PEP, how it differs from a Multiple Employer Plan (MEP), and what responsibilities remain with the employer after joining a PEP.

What a PEP Centralizes—and What It Doesn’t

A key design principle of the PEP is consolidated plan administration under a single qualified PPP. The PPP is responsible for most day-to-day and structural functions that individual employers historically handled in standalone 401(k) arrangements. Common functions centralized in a PEP include:

Drafting and maintaining the plan document, amendments, and restatements Serving as the primary ERISA fiduciary for plan governance at the plan level Selecting and monitoring service providers (recordkeeper, custodian, auditor, 3(38) investment manager if applicable) Overseeing plan operations, including eligibility, deferrals, distributions, and loans Coordinating annual compliance testing and the plan audit (if required)

However, joining a PEP is not a complete abdication of responsibility. Employers—called adopting employers—retain several core obligations that cannot be fully outsourced under ERISA. Think of the PPP as centralizing and professionalizing the engine of the 401(k) plan structure, while the employer still steers the vehicle in areas tied to their workforce, payroll, and ongoing oversight of the arrangement they adopted.

Employer Responsibilities That Remain in a PEP

1) Prudently selecting and monitoring the Pooled Plan Provider

Even though the PPP assumes significant fiduciary oversight, the employer retains a fiduciary duty to prudently select the PPP and to monitor its ongoing performance. This duty includes reviewing the PPP’s experience, fees, service model, and financial stability; documenting the selection process; and periodically reassessing whether the PPP remains appropriate. If the PPP retains a 3(38) investment manager, the employer’s responsibility is not to second-guess investment picks, but to monitor the prudence of the selection and the process for ongoing oversight.

2) Deciding to adopt—and continue—participation in the PEP

The decision to join a PEP is itself a fiduciary act. Employers must evaluate alternatives, including maintaining a single-employer plan or joining a MEP, and determine which option best fits their workforce and budget. Continuing participation is not “set-and-forget.” Employers must evaluate service quality, costs, and outcomes against benchmarks.

3) Payroll and data integrity

Accurate, timely payroll data is the lifeblood of a compliant plan. Employers remain responsible for deferral withholding, employer contribution funding, and transmitting remittances promptly. Employers must ensure data integrity for eligibility, hours of service, compensation definitions, and census reporting. The PPP cannot “fix” bad data without employer cooperation.

4) Employer contribution policy and workforce decisions

Employers set their own contribution design within the PEP’s available options (match, nonelective, profit sharing) and are responsible for affordability, budgeting, and communicating changes. Employment actions—hires, terminations, leaves of absence, and rehires—drive plan operations. The employer remains responsible for reporting status changes promptly to avoid errors in eligibility or distributions.

5) Operational cooperation and issue remediation

When operational errors occur (late remittances, missed deferrals, eligibility oversights), the PPP typically manages correction under IRS and DOL guidance, but the employer must cooperate, provide records, and fund corrections or lost earnings as required. Employers assist with participant communications that require employer input, such as notices tied to payroll changes or corporate events.

6) Participant-facing responsibilities

While the PPP and recordkeeper handle most communications, employers still need to promote enrollment, deliver required notices that come through them, and make employees available for education sessions. Employers manage practical issues like facilitating access for new hires and ensuring HR teams are trained on plan basics.

7) Fee reasonableness and cost allocation oversight

The PPP negotiates fees and may charge participating employers. The employer retains responsibility for reviewing fee reasonableness and understanding how fees are allocated between the employer and participants.

How PEPs Compare to MEPs and Single-Employer Plans

The SECURE Act modernized retirement plan options by creating the PEP framework, which differs from traditional MEPs in several ways:

No common nexus required: PEPs allow unrelated employers to participate without industry or association ties, unlike many MEPs historically. Single 5500 and audit: Under consolidated plan administration, the PPP generally files a single Form 5500 and manages the plan-level audit. This can reduce administrative burden compared to multiple employer arrangements that require separate filings at the adopting employer level. Bad apple rule relief: The SECURE Act created mechanisms to avoid one noncompliant employer disqualifying the entire plan, provided the PPP follows prescribed procedures.

Compared to a single-employer plan, a PEP offers scale advantages, professionalized fiduciary oversight, and reduced administrative lift, while still preserving employer-level flexibility on matching formulas, eligibility, and auto features when supported by the PEP’s plan document. However, in all models, ERISA compliance still requires the employer to prudently select and monitor service providers and protect participant assets through timely remittance and accurate data.

Key Considerations Before Joining a PEP

Clarify fiduciary roles in writing: Review the PPP’s service agreement, fiduciary charter, and allocation of 3(16) administrative and 3(38) investment responsibilities. Confirm who does what—and when. Map payroll workflows: Coordinate with HRIS and payroll to ensure data mapping aligns with plan definitions. Test remittance timelines and reconciliation processes before go-live. Understand investment architecture: If the PPP uses a 3(38) investment manager, understand the menu structure, QDIA selection process, and how changes are communicated to participants. Review fee schedules and revenue sharing: Ask for a transparent breakdown of hard-dollar fees and any indirect compensation. Benchmark against market ranges for your plan size. Evaluate participant experience: Consider recordkeeper tools, advice offerings, managed accounts, and multilingual support. Strong participant outcomes are a strategic benefit of PEP participation. Plan for transitions: If moving from a standalone plan or MEP, map blackout periods, asset mapping, and notice requirements to minimize disruption.

Common Myths About Fiduciary Outsourcing in PEPs

Myth: “Joining a PEP eliminates all employer fiduciary duties.” Reality: You still must prudently select and monitor the PPP, ensure payroll accuracy, and oversee fees and data. Myth: “The PPP fixes all compliance issues automatically.” Reality: The PPP manages processes, but employers supply accurate inputs and cooperate on corrections to maintain ERISA compliance. Myth: “You lose all flexibility.” Reality: Many PEPs support a range of employer-level options within the consolidated plan administration framework.

Practical Steps to Stay Compliant Post-Adoption

Establish a simple governance calendar: Quarterly reviews of service reports, fees, and operational metrics; annual benchmarking and fiduciary training refreshers. Document oversight: Keep minutes or memos for PPP selection and ongoing monitoring. Save fee reviews, testing summaries, and correction documentation. Strengthen internal controls: Implement dual approvals for payroll changes affecting deferrals; reconcile remittances to payroll each pay period. Engage employees: Promote auto features, education opportunities, and tools that improve retirement readiness.

Bottom Line

PEPs streamline retirement plan administration and centralize fiduciary oversight through a qualified PPP, offering employers a powerful alternative to traditional 401(k) plan structures. But fiduciary outsourcing is not total abdication. Employers retain critical responsibilities—selecting and monitoring the PPP, ensuring payroll and data integrity, managing employer-level design choices, and overseeing fees. With clear role definitions and strong internal controls, a PEP can deliver the benefits of scale, simplified plan governance, and improved participant outcomes while maintaining robust ERISA compliance.

Questions and Answers

Q1: How is fiduciary responsibility shared between the employer and the PPP in a PEP? A: The PPP typically serves as the primary plan-level fiduciary and 3(16) administrator, and may appoint a 3(38) investment manager. The employer retains fiduciary duties to prudently select and monitor the PPP, ensure accurate payroll and timely remittances, oversee fee reasonableness, and manage employer-level plan design choices.

Q2: Does joining a PEP change our annual filing or audit obligations? A: Generally, the PPP handles the consolidated Form 5500 and the plan-level audit for the PEP, reducing administrative duties compared to a standalone plan. Employers may still need to provide census and payroll data and support audit requests through the PPP.

Q3: What distinguishes a PEP from a MEP under the SECURE Act? A: A PEP allows unrelated employers to join without a common nexus and provides relief mechanisms so one noncompliant employer does not jeopardize the entire plan. The PPP leads consolidated plan administration and fiduciary oversight, streamlining operations versus many traditional MEP structures.

Q4: Can we still customize our employer match or eligibility rules in a PEP? A: Most PEPs offer a menu of employer-level options within the master plan document. You can typically tailor match formulas, eligibility waiting periods, and auto-enrollment settings, subject to the plan document and ERISA compliance.

Q5: If an operational error occurs, who corrects it? A: The PPP usually coordinates corrections under IRS and DOL guidance, but the employer must provide records, approve remediation steps, and fund any required corrections or lost earnings. Cooperation is essential for timely and accurate resolution.