The 3M Combat Arms Earplug Litigation: How It Started and Where It Stands Today
The 3M Combat Arms earplug litigation became one of the largest mass tort cases in U.S. history, ultimately involving hundreds of thousands of claims from veterans and service members who alleged the earplugs issued to them during deployment failed to protect their hearing. What began as a whistleblower fraud case against the federal government eventually grew into a $6 billion settlement program that has taken years to fully distribute.
This article traces the origins of the case, the allegations at its core, and how the litigation and settlement have unfolded since. Note: Our firm is no longer accepting new 3M earplug cases. This article is provided as a resource for those following the litigation or trying to understand where their existing claim stands. What Was Actually Wrong With the Earplugs The earplugs at the center of this litigation — the Combat Arms Earplugs, Version 2 — were dual-ended devices designed to give service members two options: block out all sound, or filter loud blasts while still allowing them to hear commands and conversation.
3M supplied roughly 750,000 pairs annually to the military from 2006, when it acquired the earplugs’ original designer, through 2015, when the product was discontinued. The core allegation was a design flaw: the earplugs were too short on both ends to seat properly and stay in place in a user’s ear canal. When they shifted, even slightly, they lost their seal and stopped providing the hearing protection they were designed for — without the wearer necessarily realizing it had happened.
For service members exposed to blasts, gunfire, and other loud noise during deployment, that silent failure translated into hearing loss and tinnitus that, in many cases, wasn’t discovered until years later.
How the Case Started: A Whistleblower, Not a Veteran Unlike most product liability litigation, this case didn’t begin with an injured consumer. It began with a competitor. Moldex-Metric, a longtime rival of 3M in the hearing-protection market, filed a qui tam lawsuit in 2016 under the False Claims Act — a Civil War-era statute that lets private citizens (“relators”) sue on behalf of the government when they believe a contractor has defrauded it, in exchange for a share of any recovery.
Moldex-Metric alleged that 3M’s own internal testing had shown the earplugs were defective, that 3M knew about the problem years before it ever sold a pair to the military, and that the company falsified certifications claiming the product met military specifications anyway. The Department of Justice took over the case, and in 2018, 3M agreed to pay $9.1 million to resolve it — split between restitution and punitive damages. Under the False Claims Act’s incentive structure, Moldex-Metric received roughly $1.9 million of that settlement, with another $645,000 going toward its legal costs. The remainder went to the U.S. Treasury, not to injured service members. Critically, 3M did not admit liability, and the settlement did nothing to compensate veterans directly — it simply established, on the public record, the allegation that 3M had known about a defect and sold the product anyway.
That qui tam settlement became the spark for a much larger wave of litigation, as veterans and their attorneys began filing individual product liability claims against 3M directly. From Individual Claims to the Largest MDL in U.S. History As claims multiplied across federal courts nationwide, they were consolidated into a multidistrict litigation (MDL) in early 2019, centralized before Judge M. Casey Rodgers in the Northern District of Florida.
At its peak, the MDL held roughly 300,000 pending cases — making it the largest MDL ever filed in the United States. To test how juries would respond to the underlying allegations, the court held a series of bellwether trials — early test cases used to gauge likely outcomes and encourage settlement. Of the 16 bellwether trials that reached verdict, plaintiffs won 10 and 3M won 6.
Those mixed results shaped the negotiating posture on both sides for years: strong enough plaintiff verdicts to create real exposure for 3M, but enough defense wins to keep the company from feeling compelled to settle quickly or comprehensively. The $6 Billion Settlement By August 2023, reports surfaced that 3M was nearing a global settlement, with early estimates around $5.5 billion. The final agreement, announced later that month, set the total at $6 billion — $5 billion in cash and $1 billion in company stock, structured to be paid out over several years through 2029. (3M later converted the stock portion to cash as well, opting to pay $1 billion in cash instead of issuing unregistered shares, likely to avoid the administrative complexity of managing a stock distribution.)
The settlement was built around a tiered system rather than a single flat payment: Claimants who wanted a fast, no-frills resolution could take a flat Expedited Payment Program (EPP) award, without submitting detailed medical documentation. Awards were relatively modest — for example, tinnitus without corroborating medical records was valued around $5,000, while documented moderate-or-greater hearing loss could reach roughly $24,000 (claimants qualifying for multiple categories received the higher amount, not a combined total). Claimants willing to undergo a more detailed review of their medical records, service history, and the severity of their injury could pursue the Deferred Payment Program (DPP), which used a points-based system to calculate a potentially larger award. An Extraordinary Injury Fund (EIF) was set aside for claimants with especially severe or unusual injuries. A small number of bellwether (“Wave”) verdict cases were paid according to their trial outcomes rather than the standardized formulas.
3M could walk away from the deal entirely if participation fell short of 98% — an unusually aggressive threshold, though ultimately more than 98% of eligible claimants opted in. Was Opting Out a Realistic Alternative? For veterans dissatisfied with the settlement amounts, opting out and pursuing an individual case remained legally possible. In practice, though, virtually no one did — largely because no personal injury firm publicly stepped forward to accept opt-out cases on a contingency basis.
Without a mechanism to fund and litigate a case outside the settlement structure, most claimants concluded that participating in the settlement program, however imperfect, was the more realistic path to compensation. By the time the MDL formally wound down, its docket had gone from roughly 391,000 filed cases to zero pending.
Disputes That Emerged During the Payout Process A settlement of this size, spread across hundreds of thousands of claimants and dozens of law firms, inevitably generated its own secondary litigation over how the money would be handled: Attorney fee disputes. The court confirmed a 9% “common benefit” holdback from every claimant’s recovery, set aside to compensate the attorneys who did the foundational work benefiting the entire plaintiff pool, with a separate process established to divide those fees among firms. Insurance coverage fights.
3M spent years battling its own insurers over who should cover defense costs and settlement payments. Courts repeatedly sided against 3M on technical grounds — including a ruling that insurance policies were held by Aearo Technologies (the earplugs’ original manufacturer, which 3M acquired) rather than 3M itself, meaning insurers could decline to pay until Aearo satisfied its own coverage obligations first. Payment timeliness disputes. The court pushed firms handling claimant funds to comply with a “50% rule,” requiring that claimants receive at least half of their gross settlement after the common-benefit fee was deducted, and set deadlines for firms to actually distribute funds once received. Claims integrity issues.
A Special Master’s investigation into a batch of claims submitted through a foreign referral network in Uganda found significant deficiencies in supporting documentation and inadequate vetting by the law firm involved — though it stopped short of finding intentional fraud, attributing the problems instead to what it called reckless indifference to red flags during the submission process. Fraud warnings to claimants. The court also had to warn claimants directly about scammers impersonating settlement administrators and attempting to extract Social Security numbers and other personal information over the phone — a reminder that large, well-publicized settlements tend to attract fraud targeting the very people they’re meant to help.
Where Things Stand as of Mid-2026 The federal MDL itself is now closed. As of April 2026, all 391,283 cases filed in the MDL had been dismissed, leaving no cases pending in that court — though a handful of related claims continued in Minnesota state court outside the MDL structure. On the money side, distribution is well past the halfway mark but not yet complete. As of July 2026, more than $3.03 billion of the $6 billion settlement had been paid out. The Expedited Payment Program is essentially finished, with well over 230,000 claimants paid and only a small handful still outstanding.
Deferred Payment Program and Extraordinary Injury Fund claimants — those with more severe, individually evaluated injuries — have also received substantial payments, though the point-based award structure means final payment amounts and timing continue to be calculated and distributed in phases scheduled through 2029. What This Case Illustrates About Mass Tort Litigation The 3M earplug litigation offers a useful window into how large-scale product liability cases actually unfold in practice. A few themes stand out: Whistleblowers can trigger litigation that individual plaintiffs couldn’t have started alone. The entire case traces back to a competitor’s fraud claim against the government, not an injured veteran’s lawsuit. That qui tam case didn’t compensate a single service member directly, but it surfaced the internal evidence that made the later product liability claims viable.
Bellwether trials shape settlement leverage. A mixed trial record — meaningful wins on both sides — often does more to bring parties to the table than a string of one-sided verdicts would. Defendants who win a reasonable share of test cases have less incentive to settle quickly, while enough plaintiff wins keep the pressure on. A settlement doesn’t mean the case is over. Even after the headline $6 billion figure was announced, years of additional litigation followed over attorney fees, insurance coverage, claims administration, and fraud prevention — all before every eligible claimant received a final payment. Participation thresholds matter. 3M’s ability to walk away if participation fell below 98% gave the company significant leverage during the opt-in period, and it likely influenced how aggressively claimants’ attorneys encouraged their clients to enroll rather than risk the deal collapsing.
A Note on Related Litigation Attorneys who handled 3M earplug claims frequently field questions about other hearing-related and mass tort litigation, including cases involving Tepezza (a Graves’ disease treatment linked to hearing loss and tinnitus) and AFFF/PFAS firefighting foam exposure, both of which disproportionately affect military members and veterans. If you’re researching one of these other areas, it’s worth confirming with an attorney whether the case is currently accepting new clients, as intake windows for mass tort litigation open and close as cases develop. This article is for informational purposes only and does not constitute legal advice. If you have questions about an existing 3M earplug claim or a related case, consult with your attorney directly.