

 
 Legal Sidebari 
 
Supreme Court Rules on Retirement Plan 
Fiduciary Duty in Hughes v. Northwestern 
University 
Updated January 31, 2022 
Among Congress’s policy priorities is safeguarding retirement income security for working Americans, 
retirees, and their families. In January 2022, the Supreme Court issued its decision in Hughes v. 
Northwestern University, a case concerning a plan fiduciary’s duty to control retirement plan fees and 
manage a plan’s investment lineup under the Employee Retirement Income Security Act (ERISA), and 
the circumstances under which participants and others may sue fiduciaries for a breach of these duties. In 
Hughes, the Court emphasized that as part of these duties, plan fiduciaries must continuously monitor 
plan investments and remove imprudent investments from the plan, even if the plan offers an extensive 
range of investments. This Legal Sidebar provides background on ERISA’s requirements for retirement 
plans and plan fiduciaries; discusses the Court’s decision in Hughes; and concludes with select 
considerations for Congress. 
Background 
ERISA provides a comprehensive federal scheme for regulating private-sector employee benefit plans. 
The Act governs roughly 733,000 retirement plans that contain more than $10 trillion in plan assets. 
ERISA does not require employers to offer retirement benefits, but those that do must comply with the 
Act’s requirements. 
The Hughes case involved a so-called 403(b) plan, a 401(k)-like defined contribution plan used by certain 
educational institutions and tax-exempt organizations. As part of this retirement plan type, each 
participant has an individual account containing an amount based on employer and employee 
contributions and investment gains or losses to the account, minus fees or other plan expenses. Defined 
contribution plans do not provide a guaranteed benefit amount, and participants’ account balances 
generally fluctuate over time. Plan fiduciaries typically compile a menu of investment choices, and plan 
participants select investments from this menu. 
One of ERISA’s central goals is to “protect . . . the interests of participants and . . . beneficiaries” of 
employee benefit plans. To this end, ERISA imposes certain obligations on plan fiduciaries—persons who 
Congressional Research Service 
https://crsreports.congress.gov 
LSB10636 
CRS Legal Sidebar 
Prepared for Members and  
 Committees of Congress 
 
  
 
Congressional Research Service 
2 
generally have discretionary authority or control over the management and operation of employee benefit 
plans. Among these obligations, ERISA requires fiduciaries to act “with the care, skill, prudence, and 
diligence under the circumstances then prevailing that a prudent man . . . would use in the conduct of an 
enterprise of a like character and with like aims.” When determining whether a fiduciary has violated the 
duty of prudence, courts commonly look to the fiduciary’s conduct surrounding the selection and 
acquisition of a particular investment, rather than an investment’s ultimate performance.  
ERISA fiduciaries must also manage plan expenses that plan participants pay. While the Act does not 
specify a level of fees that may be paid through a defined contribution plan participant’s account, 
fiduciaries must ensure that plan fees are “reasonable.” Additionally, under ERISA, participants and 
government entities can bring various civil actions to enforce the Act’s fiduciary requirements. Among 
other provisions, the Act authorizes the Secretary of Labor, a plan participant, and others to bring a civil 
action to redress a breach of fiduciary duty. ERISA makes a plan fiduciary personally liable for breaches 
against a plan. 
Recently, there has been extensive litigation over whether defined contribution plan fiduciaries 
imprudently selected or failed to monitor plan investments with “excessive fees” that underperformed 
alternative, lower-priced investments. Excessive fee litigation has also involved legal challenges relating 
to plan service providers and claims that fiduciaries improperly paid exorbitant amounts to providers to 
administer 401(k) or other defined contribution plan benefits. In these cases, plan participants have 
alleged that plan fiduciaries breached their duties by paying unnecessarily high recordkeeping and/or 
investment management fees and expenses, which substantially lowered the participants’ retirement 
account balances. Dozens of fee-related cases were filed in recent years, and some litigating parties have 
reached multimillion dollar settlements. Beginning around 2016, there has been a swell of excessive fee 
litigation involving 403(b) plans in particular. Several lawsuits have been filed against universities on 
behalf of thousands of plan participants. 
Hughes v. Northwestern University 
In Hughes (formerly captioned Divane v. Northwestern University), employees participating in at least 
one of the University’s two 403(b) plans filed a class action lawsuit against the educational institution and 
certain university officials, claiming that plan fiduciaries imprudently paid excessive recordkeeping and 
investment management fees. Given that the plans jointly held more than $3 billion in net assets, 
participants generally contended that plan fiduciaries failed to employ certain methods available to larger 
plans to reduce plan expenses. Plan participants alleged that the fiduciaries breached their obligations by, 
among other things, imprudently choosing investment options with “unnecessary” management fees in 
the plans’ investment lineup. In particular, participants challenged the fiduciaries’ selection of certain 
“retail-class” mutual funds, when identical “institutional class” fund shares were available to large 
investors at lower prices. Plan participants also asserted that there were an excessive number of plan 
investment offerings, causing needless confusion and difficulty for participants in making investment 
selections.  
The district court dismissed participants’ claims for failing to demonstrate a plausible ERISA violation, 
and the U.S. Court of Appeals for the Seventh Circuit affirmed the judgment. The appeals court indicated 
that the participants had the opportunity to keep expenses low by choosing to invest in certain low-cost 
index funds that were also available under the plan, and were not “forced to stomach an unappetizing 
menu.” The Seventh Circuit concluded that, in concert with earlier Seventh Circuit decisions, plans could 
offer a broad range of investment options and fees without breaching fiduciary responsibilities under 
ERISA.  
In an 8-0 decision written by Justice Sonia Sotomayor, the Supreme Court concluded that the Seventh 
Circuit’s analysis fell short. (Justice Amy Coney Barrett did not participate in the consideration or 
  
Congressional Research Service 
3 
decision in the case.) Relying on its earlier decision in Tibble v. Edison International, the Court explained 
that the problem with the Seventh Circuit’s reasoning was its singular focus on the idea that participants 
had a diverse range of investment options in the plan, and that “investor choice” excused fiduciaries from 
a possible breach of their duties. The Court further determined that the Seventh Circuit did not undertake 
the requisite “context-specific inquiry” concerning the fiduciaries’ duty to monitor plan investments and 
remove imprudent investment options from the plan’s menu. As the Court indicated, failure to eliminate 
poor investments from a retirement plan within a reasonable time constitutes a breach of fiduciary duty 
under ERISA. The Court vacated the Seventh Circuit’s decision and remanded the case for further review.  
Considerations for Congress 
While the practical impact of Hughes remains to be seen, the decision may be notable because it 
highlights two main points with respect to ERISA fiduciary liability. First, as the Supreme Court 
articulated, retirement plan fiduciaries cannot satisfy ERISA’s duty of prudence solely by offering an 
array of plan investment options beyond the products associated with allegedly excessive fees. 
Additionally, to meet the duty of prudence, plan fiduciaries have an ongoing responsibility to monitor 
plan investments and weed out imprudent investments from a plan’s investment portfolio.  
The Court also left open a number of issues in Hughes. For instance, the Court did not weigh in on 
whether the disputed retail-class investments in the retirement plans were suitable for participants, nor did 
the Court articulate criteria for making that determination. However, the Court recognized that ERISA 
fiduciary liability is context-dependent, and wrote that “[a]t times, the circumstances facing an ERISA 
fiduciary will implicate difficult tradeoffs, and courts must give due regard to the range of reasonable 
judgments a fiduciary may make based on her experience and expertise.” This statement arguably signals 
that in the Court’s view, lower courts should afford some leeway to plan fiduciaries in evaluating whether 
a fiduciary made a prudent investment decision. 
Should Congress decide to address the issue of plan fiduciary obligations, it could consider further 
defining the scope of these obligations in legislation, including with respect to how fiduciaries should 
evaluate the level of fees associated with a particular investment. Alternatively, Congress could explore 
legislation that addresses a plan participant’s burden of proof for bringing a viable claim against a plan 
fiduciary relating to alleged excessive fees. Such legislation could also alter the ability of plan participants 
to raise claims in these types of cases. 
 
 
Author Information 
 
Jennifer A. Staman 
   
Legislative Attorney 
 
 
 
 
Disclaimer 
This document was prepared by the Congressional Research Service (CRS). CRS serves as nonpartisan shared staff 
to congressional committees and Members of Congress. It operates solely at the behest of and under the direction of
  
Congressional Research Service 
4 
Congress. Information in a CRS Report should not be relied upon for purposes other than public understanding of 
information that has been provided by CRS to Members of Congress in connection with CRS’s institutional role. 
CRS Reports, as a work of the United States Government, are not subject to copyright protection in the United 
States. Any CRS Report may be reproduced and distributed in its entirety without permission from CRS. However, 
as a CRS Report may include copyrighted images or material from a third party, you may need to obtain the 
permission of the copyright holder if you wish to copy or otherwise use copyrighted material. 
 
LSB10636 · VERSION 2 · UPDATED