Issued by the AICPA FLS Fraud Task Force
Lead authors: Frederick Kohm, CPA/CFF; and Clay Kniepmann, J.D., CPA/CFF/ABV
Spring 2026 Issue
Retaliation and Whistleblower Complaints in White-Collar Investigations | FVS Eye on Fraud
Resource available
Introduction
Early indicators of corporate fraud rarely appear in financial statements. Instead, they often surface quietly inside organizations, noticed by employees working closest to operational and financial processes. An accountant may observe unusual journal entries late in a reporting cycle. A procurement employee may question recurring payments to a vendor that lack a clear contractual purpose. An internal auditor may observe odd journal entries posted on a weekend or holiday. A compliance professional may notice patterns of approvals that bypass internal controls.
In forensic accounting engagements, these early signals often emerge before any formal investigation has begun. Employees may raise concerns internally, sometimes through supervisors, compliance officers, or anonymous reporting channels. In many cases, these individuals are not motivated by personal gain or recognition but by a sense of professional and ethical responsibility to ensure that something potentially harmful is addressed.
During our careers as CPAs specializing in forensic accounting and white-collar investigations, we have observed a recurring pattern. The individuals who first detect misconduct are frequently those closest to the underlying financial activity. Their operational knowledge allows them to identify irregularities that would otherwise remain hidden within complex accounting systems. However, deciding to report wrongdoing — whistleblowing — can carry substantial personal risk. Employees who raise concerns may worry that they will be perceived as disloyal or disruptive. When alleged misconduct involves senior management or significant financial interests, the perceived stakes become even higher.
In organizations where transparency and ethical accountability are not strongly reinforced, whistleblowers — rather than the misconduct — may become the focus of scrutiny. This response often manifests as retaliation.
From a forensic accountant’s perspective, retaliation is rarely an isolated employment issue. It frequently reflects deeper governance failures that weaken internal oversight and create environments where misconduct can flourish. Weak leadership and poor culture are typical of such workplaces. When retaliation occurs, it signals that organizational leadership may prioritize reputational protection or internal hierarchy over ethical accountability.
An understanding of retaliation dynamics is therefore essential not only for investigators but also for boards of directors, compliance professionals, regulators, and executives responsible for maintaining effective corporate governance.
Defining retaliation in the context of whistleblowing
Retaliation refers to adverse actions taken against an employee because they reported misconduct, regulatory violations, or unethical conduct. Historically, retaliation has been understood as a form of reprisal. Merriam-Webster defines retaliation as “an act of retaliating: requital, especially: return of evil for evil.”ᶦ
Within corporate environments, retaliation can take many forms, both overt and subtle. These actions can include termination, demotion, reassignment to undesirable duties, exclusion from professional opportunities, harassment, or professional isolation.
In practice, retaliation frequently unfolds gradually rather than through a single disciplinary action. An employee who always received strong performance evaluations might, after reporting misconduct, suddenly encounter critical feedback for minor issues. Invitations to strategic meetings may cease. Access to leadership or key projects may diminish. For investigators, identifying retaliation often requires reconstructing the timeline of events surrounding a whistleblower complaint. When adverse employment actions occur shortly after a report of misconduct, investigators must examine whether those actions represent legitimate managerial decisions or retaliatory conduct.
Organizations that lack strong governance frameworks can leave whistleblowers particularly susceptible to retaliation. When leadership discourages dissent or emphasizes loyalty over accountability, employees might view whistleblowing as threatening the organizational hierarchy rather than a necessary component of ethical oversight.
Historical foundations of whistleblower protections
The principle that individuals should be protected when reporting wrongdoing has existed for centuries.
One of the earliest legal mechanisms encouraging whistleblowing emerged in medieval England through “qui tam” laws. These statutes allowed private citizens to report fraud against the Crown and receive a share of recovered penalties.ᶦᶦ
The United States adopted similar principles early in its history. In 1778, during the American Revolution, several sailors reported misconduct by a naval commander. Rather than punishing the individuals who reported the abuse, the Continental Congress passed legislation affirming that individuals who report wrongdoing should be protected.ᶦᶦᶦ
Later, during the Civil War, Congress enacted the False Claims Act of 1863 to combat fraud against the federal government. The act empowered private citizens to bring fraud cases on behalf of the government and receive a portion of recovered funds.ᶦᵛ
These legal frameworks established a principle that continues to shape modern whistleblower protections: individuals who expose fraud serve an important public function.
Investigative case examples
Enron
The collapse of Enron in 2001 remains one of the most significant corporate fraud cases in modern history. The company used complex accounting structures and special-purpose entities to conceal billions of dollars in debt from investors. One of the earliest internal warnings came from Sherron Watkins, an Enron executive who raised concerns about the company’s accounting practices. Watkins warned senior leadership that the company could face catastrophic consequences if the accounting irregularities continued.
Rather than heed Ms. Watkins’ warnings, Enron leadership instead chose to retaliate against Ms. Watkins through demotion, reassignment, workplace marginalization, and threats of termination. The misconduct persisted until Enron’s fraudulent accounting made headlines, causing massive losses to investors and employees and, ultimately, leading to the company’s demise.ᵛ
WorldCom
The WorldCom accounting scandal, uncovered in 2002, involved the improper capitalization of operating expenses, which inflated company profits by billions of dollars. The scheme was exposed by Cynthia Cooper, WorldCom’s vice president of internal audit, who led an internal investigation that uncovered the fraudulent accounting.
Although she was not formally demoted or fired, Ms. Cooper nevertheless faced subtle yet significant retaliation at WorldCom. This included obstructive efforts from executives, dismissive or aggressive interactions, forced secrecy, and limitations on her professional authority, all of which led to emotional distress. She and her team resorted to working in secrecy at night to complete their work. WorldCom’s collapse resulted in more than $100 billion in shareholder losses and prison sentences for several senior executives.ᵛᶦ
Psychological and professional impact
Whistleblowers frequently experience significant professional and emotional consequences. Employees who report misconduct often fear their careers will be damaged or that they will be perceived as disloyal. In industries where professional reputation and relationships are critical, this perception can create long-term challenges.
In forensic investigations, whistleblowers sometimes express hesitation during interviews, particularly when discussing internal reporting experiences. Some individuals worry that cooperating with investigators could further jeopardize their careers. The emotional toll can include anxiety, stress, and social isolation. Colleagues may distance themselves out of concern that association with the whistleblower could expose them to similar risks.
In some situations, organizations attempt to undermine the whistleblower’s credibility by portraying them as disgruntled employees rather than individuals acting in the interest of ethical accountability.
Such narratives can distract attention from the underlying alleged misconduct. Even when a claim originates from a disgruntled employee, dismissing it outright can be risky. Personal dissatisfaction does not automatically invalidate the substance of an allegation, and individuals with negative experiences can still raise legitimate concerns. Ignoring or minimizing such claims without properly investigating may allow real issues to go unaddressed, exposing the organization to legal and reputational consequences. A more responsible approach is to evaluate the evidence objectively, separating the individual’s presumed motives from the validity of the claim, and ensuring that all concerns are reviewed through a fair and transparent process.
Retaliation as a deterrent to future reporting
Perhaps the most damaging consequence of retaliation is its deterrent effect on other employees. Employees observe how leadership responds when someone raises concerns. If the whistleblower experiences negative consequences, the message becomes clear: reporting misconduct carries risk.
This dynamic creates a chilling effect, as many investigators can attest.
Research from the Association of Certified Fraud Examiners (ACFE) consistently demonstrates that employee tips are the most common method for detecting fraud. The ACFE’s Report to the Nations indicates that approximately 43 percent of occupational fraud cases are detected through tips from employees or other insiders.ᵛᶦᶦ When retaliation discourages reporting, organizations essentially lose their most effective mechanism for detecting fraud.
Legal and regulatory perspectives
Modern whistleblower protections were strengthened significantly following major corporate scandals in the early 2000s. The Sarbanes-Oxley Act of 2002 required publicly traded companies to establish anonymous reporting channels for accounting and auditing concerns. The Dodd-Frank Wall Street Reform and Consumer Protection Act, enacted in 2010, expanded whistleblower protections. Dodd-Frank also created financial incentives for individuals who report securities-law violations to the SEC, which has repeatedly emphasized that retaliation against whistleblowers is unlawful. Employers may not discharge, demote, suspend, threaten, harass, or discriminate against employees who report securities violations.ᵛᶦᶦᶦ
Similarly, the Department of Justice recognizes that whistleblowers play a crucial role in identifying fraud against the government and protecting public resources.
Similar whistleblower protection laws, like the European Whistleblowing Directive and the Whistleblower Protection Act in Japan, exist around the world as well. Companies operating internationally should become familiar with whistleblower laws in jurisdictions they operate in — such laws are often complex and can differ from those in the United States.
These regulatory perspectives reinforce an important principle: whistleblower protections are not simply employment safeguards — they are essential enforcement tools.
Public impact
As outlined in the case examples earlier, whistleblower retaliation is often associated with notorious fraud cases that ended in catastrophe for the companies involved. On the other hand, whistleblower complaints also lead to positive institutional changes that ultimately benefit not just the organization, but the public at large. The following recent cases highlight significant wide-scale cultural impact.
Booz Allen Hamilton
Sarah Feinberg emerged as a whistleblower while working at Booz Allen Hamilton, where she discovered extensive overbilling in U.S. government contracts. Drawing on her experience as a former Marine and her analytical access to financial records, Feinberg meticulously documented fraudulent billing exceeding $500 million. Despite initial resistance from executives who minimized her concerns, she leveraged the False Claims Act to hold the company accountable, risking professional setbacks and personal strain in the process. Her efforts culminated in a $377 million corporate settlement and brought wider attention to oversight deficiencies in government contracting, highlighting the critical role of ethically driven insiders in exposing systemic misuse of public resources.ᶦˣ
Whistleblower Frances Haugen amassed tens of thousands of internal documents revealing the company’s algorithms knowingly — and for profit — amplified misinformation, hate speech, and content harmful to adolescent mental health. She initially faced institutional resistance and managerial dismissal, so Haugen escalated her concerns to the SEC, prioritizing ethical transparency over personal and professional security. Her disclosures ignited global debates over algorithmic ethics, social media regulation, and protections for vulnerable populations. Haugen’s case underscores how insider knowledge, combined with rigorous evidence collection and moral courage, can prompt accountability in large-scale digital platforms, influencing policy and public consciousness.ˣ
Cultural implications for organizations
Retaliation can shape organizational culture in powerful ways. When employees witness retaliation against a colleague who reported misconduct, they internalize a clear message: speaking up may be dangerous.
Over time, organizations that tolerate retaliation may develop cultures characterized by secrecy and fear. Employees may hesitate to question management decisions, challenge accounting practices, or raise compliance concerns.
This effect can reverberate throughout the organization in ways that extend well beyond discouraging the reporting of misconduct. Employees may interpret management’s actions as indicative of broader weaknesses in ethical judgment and behavior. Such actions undermine the organization’s “tone at the top,” increasing the likelihood that employees either engage in unethical conduct themselves or choose to leave due to diminished trust and respect for senior leadership.
A well‑known case illustrating this dynamic involved Wells Fargo and its widely reported fake-accounts scandal. For years, employees were pressured to meet aggressive sales targets, leading thousands of staff to open unauthorized customer accounts. When the misconduct began surfacing, many frontline employees reported that they felt unable to speak up internally due to fear of retaliation or dismissal. Leadership initially downplayed the issue and emphasized sales performance over accountability. This response signaled to employees that ethical concerns were secondary to business targets, reinforcing a tone at the top that suggested senior Wells Fargo executives tolerated questionable practices.ˣᶦ
In contrast, organizations that actively protect whistleblowers develop stronger ethical cultures. Employees feel empowered to raise concerns early, allowing leadership to address problems before they escalate into crises.
The role of the forensic accountant
Evidence of retaliation can present unique challenges for forensic accountants.
Are forensic accountants required to report indicia of retaliation that they encounter during their investigations? The answer is that it depends; it might hinge on the terms of the engagement, which might in turn need to be clarified by legal counsel or the client.
For example, assume that a forensic accountant engaged to quantify the losses from an alleged asset misappropriation discovers during the investigation that the whistleblower who gave rise to the investigation has been demoted. The forensic accountant faces an ethical dilemma. They were hired by the company to investigate the alleged asset misappropriation from an accounting perspective. Retaliation against employees may not be an accounting issue, but its existence may affect evidence integrity and employee cooperation with the investigation.
There is no bright-line rule that dictates what a forensic accountant should (or should not) do in such circumstances. However, there are factors that forensic accountants should consider, such as
the nature and scope of the engagement;
which party engaged the forensic accountant;
the standards that apply to the circumstances, including the AICPA Code of Professional Conduct and the Statement on Standards for Forensic Services No. 1;
the legal status and regulatory environment of the company the investigation is taking place in (distinctions between publicly traded companies, financial institutions, and government entities might affect the forensic accountant’s responsibilities); and
whether advice from counsel should be sought.
Ultimately, a forensic accountant must understand the limitations of their role.
Forensic accountants do not make legal determinations. Just as a forensic accountant cannot make a determination that fraud has occurred, they cannot determine if retaliation has occurred.
However, to the extent that retaliation may affect the results of a forensic engagement, the forensic accountant should document the facts encountered objectively, avoid speculation or legal conclusions, and alert counsel or the client if necessary.
Strategies to prevent retaliation
Preventing retaliation requires strong leadership commitment and well-designed governance structures, including
confidential reporting channels, such as anonymous ethics hotlines or secure digital reporting systems;
clear anti-retaliation policies that define prohibited conduct and establish enforcement mechanisms;
meaningful consequences for managers who engage in retaliatory behavior; and
training programs that reinforce ethical reporting expectations and clarify available reporting options.
A recent whistleblower case involving health insurer Humana illustrates the importance of these safeguards. In that matter, a former actuary alleged that the company submitted fraudulent bids for Medicare prescription drug contracts, ultimately resulting in a $90 million settlement ordered by a federal court in 2024.ˣᶦᶦ Such cases highlight how fraud allegations can prompt increased scrutiny of internal reporting practices and underscore the need for robust whistleblower programs.
In the wake of cases like this, regulators and compliance experts continue to stress the role of strong whistleblower programs — including confidential hotlines — as a frontline defense against fraud. These systems are seen as critical for surfacing concerns early, before they escalate into costly legal actions or government enforcement proceedings.
Boards of directors and audit committees should also play an active role in overseeing whistleblower programs and ensuring that reported concerns are investigated independently and without undue influence.
Practitioner takeaways
For forensic accountants, auditors, and compliance professionals, several practical lessons emerge:
Employee tips remain the most effective method for detecting fraud.
Retaliation significantly reduces the likelihood that employees will report misconduct.
Independent reporting channels and audit committee oversight are critical safeguards.
Strong ethical leadership reduces organizational risk.
Whistleblower protections strengthen — not weaken — corporate governance and have a positive impact on corporate culture (tone at the top).
Training on reporting suspected fraud and on whistleblower protections from retaliation strengthens resolve and awareness for employees across organizations. Employees should receive such training annually.
Forensic accountants should understand the potential effect that retaliation can have on the veracity of their findings, document evidence of retaliation objectively, avoid speculation or legal conclusions, and report indicia of retaliation in certain circumstances.
Conclusion
In many of the most significant fraud cases investigated over the past several decades, someone inside the organization recognized that something was wrong. Organizations that detect fraud early — whose culture encourages safe reporting of concerns by employees — are often distinguished from those that suffer catastrophic failures.
From the perspective of a forensic accountant, retaliation against whistleblowers represents a serious governance failure. It discourages transparency, weakens internal controls, and allows misconduct to grow unchecked. Organizations that protect whistleblowers send a different message: accountability matters, transparency is valued, and ethical conduct is expected.
Institutions that embrace this message are far more likely to build resilient organizations capable of maintaining public trust.
i Merriam-Webster.com Dictionary, s.v. “retaliation,” accessed April 24, 2026, https://www.merriam-webster.com/dictionary/retaliation.
ii Whistleblowers International, “Whistleblowing History Overview,” n.d., https://whistleblowersinternational.com/what-is-whistleblowing/history/.
iii NAVEX, “A History of Whistleblowing in America,” July 29, 2022, https://www.navex.com/en-us/blog/article/a-history-of-whistleblowing-in-america/.
iv U.S. Department of Justice, “The False Claims Act and Whistleblower Provisions,” January 15, 2025, https://www.justice.gov/civil/false-claims-act.
v Bethany McLean and Peter Elkind, The Smartest Guys in the Room: The Amazing Rise and Scandalous Fall of Enron (Portfolio Trade: 2004).
vi Robert S. Kaplan and David Kiron, “Accounting Fraud at WorldCom,” Harvard Business School (case study), April 29, 2004 (revised September 2007), https://store.hbr.org/product/accounting-fraud-at-worldcom/104071.
vii Association of Certified Fraud Examiners, Occupational Fraud 2024: A Report to the Nations (ACFE: 2024), 23, https://legacy.acfe.com/report-to-the-nations/2024/.
viii U.S. Securities and Exchange Commission, “Whistleblower Program,” accessed April 21, 2026,https://www.sec.gov/enforcement-litigation/whistleblower-program.
ix Ken Dilanian and Laura Strickler, “‘Doing the Right Thing’ Was Worth $40 Million,” NBC News, August 29, 2023, https://www.nbcnews.com/news/investigations/marine-sarah-feinberg-whistleblower-booz-allen-69-million-rcna102098.
x Billy Perrigo, “Inside Frances Haugen's Decision to Take on Facebook,” TIME, updated December 11, 2023, https://time.com/6121931/frances-haugen-facebook-whistleblower-profile/.
xi U.S. Department of Justice, “Wells Fargo Agrees to Pay $3 Billion to Resolve Criminal and Civil Investigations into Sales Practices Involving the Opening of Millions of Accounts without Customer Authorization,” February 21, 2020, https://www.justice.gov/archives/opa/pr/wells-fargo-agrees-pay-3-billion-resolve-criminal-and-civil-investigations-sales-practices; David Unyime Nkanta, “Wells Fargo’s Reckoning: Who Paid the Price for the Bank’s Scandal?”, International Business Times (UK), June 6, 2025, https://www.ibtimes.co.uk/wells-fargos-reckoning-who-paid-price-banks-scandal-1735009.
xii Theresa Houck, “Court Orders Humana to Pay $90M in Groundbreaking Whistleblower Medicare Fraud Case Settlement,” Healthcare Innovation, October 10, 2025, https://www.hcinnovationgroup.com/policy-value-based-care/health-insurance/article/55322697/court-orders-humana-to-pay-90m-in-groundbreaking-whistleblower-medicare-fraud-case-settlement.
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File name: EOF - Retaliation and Whistleblower Complaints_Spring 2026.pdf
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