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Fourth Circuit Enforces Employee's Pre-Filing Release of Qui Tam Action under the False Claims Act, Dismisses Suit

Client Alert | 3 min read | 04.21.10

The Fourth Circuit recently ruled that an employee who signed a general release of all federal, state and local claims in connection with his separation from his employer was subsequently barred from bringing a qui tam action under the False Claims Act (FCA). United States ex rel. Radcliffe v. Purdue Pharma, No. 09-1202, __ F.3d __ (4th Cir. 2010). The court held that where the federal government was aware of the fraudulent conduct prior to the filing of the qui tam action, the federal interest served by enforcing releases outweighed the need to provide incentives to individuals to bring qui tam claims.

This case related to Purdue Pharma's allegedly fraudulent marketing of the drug OxyContin to the government between 1996 and 2005. The relator in this case, Mark Radcliffe, was a former Purdue Pharma sales representative. During his employment, he contacted the federal government anonymously and disclosed concerns regarding Purdue Pharma's allegedly fraudulent marketing of OxyContin.

Subsequent to these disclosures, Radcliffe negotiated a separation agreement with the company that included a broad release of all federal, state and local claims. Nevertheless, after his separation, Radcliffe filed a qui tam action in 2005 relating to the marketing of OxyContin. Prior to the filing of the qui tam action, the Department of Justice had already begun an investigation into the alleged fraudulent activity. In 2007, the DOJ declined to intervene in the qui tam action.

Purdue Pharma argued that Radcliffe's release barred his claim and should be enforced because the government knew of the potential claim prior to the filing of the suit.. Radcliffe disagreed, asserting that the release he executed upon his separation from Purdue Pharma violated public policy and, therefore, was unenforceable. Releases signed before the filing of a qui tam suit, he argued, would prevent potential relators from exposing potential violations of the FCA.

The Fourth Circuit held that the employment release, executed before the filing of the qui tam action, barred Radcliffe's claim. The court reasoned that when the government has no knowledge of a potential FCA violation prior to a relator filing a claim, enforcing a release would violate the public interest in bringing such claims to light. However, when the government is aware of allegations prior to the filing of the qui tam action, the "public policies supporting the private settlement of suits heavily favor the enforcement of a pre-filing release." As the DOJ had been investigating Purdue Pharma before the filing of the qui tam action, the Fourth Circuit enforced the release as a bar to Radcliffe's claim.

In Radcliffe, the Fourth Circuit joined other courts, including the Ninth and Tenth Circuits, in using a public policy balancing approach to determine that releases executed by employees are not presumptively invalid when used by employers to bar FCA claims. This balance, these courts have reasoned, enables the government to conduct its own inquiry into fraud while allowing companies to settle qui tam claims prior to litigation.

For other articles by Crowell & Moring professionals regarding the validity of releases of qui tam claims under the False Claims Act, click here and here. If you have any questions regarding waivers of qui tam claims, please contact any of the professionals listed to the left or your usual Crowell & Moring contact.

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Client Alert | 5 min read | 12.12.25

Eleventh Circuit Hears Argument on False Claims Act Qui Tam Constitutionality

On the morning of December 12, 2025, the Eleventh Circuit heard argument in United States ex rel. Zafirov v. Florida Medical Associates, LLC, et al., No. 24-13581 (11th Cir. 2025). This case concerns the constitutionality of the False Claims Act (FCA) qui tam provisions and a groundbreaking September 2024 opinion in which the United States District Court for the Middle District of Florida held that the FCA’s qui tam provisions were unconstitutional under Article II. See United States ex rel. Zafirov v. Fla. Med. Assocs., LLC, 751 F. Supp. 3d 1293 (M.D. Fla. 2024). That decision, penned by District Judge Kathryn Kimball Mizelle, was the first success story for a legal theory that has been gaining steam ever since Justices Thomas, Barrett, and Kavanaugh indicated they would be willing to consider arguments about the constitutionality of the qui tam provisions in U.S. ex rel. Polansky v. Exec. Health Res., 599 U.S. 419 (2023). In her opinion, Judge Mizelle held (1) qui tam relators are officers of the U.S. who must be appointed under the Appointments Clause; and (2) historical practice treating qui tam and similar relators as less than “officers” for constitutional purposes was not enough to save the qui tam provisions from the fundamental Article II infirmity the court identified. That ruling was appealed and, after full briefing, including by the government and a bevy of amici, the litigants stepped up to the plate this morning for oral argument....