Class Action Lawsuits: How They Work, Notices, and Payouts

A class action lawsuit is a single case brought by one person or a small group on behalf of a much larger group of people who suffered the same kind of harm. Instead of thousands of individual lawsuits over the same defective product, billing practice, or workplace policy, one case resolves the claims for everyone at once. Class action lawsuits exist because some wrongs affect too many people to litigate one by one, and because the harm to any single person is often too small to make hiring a lawyer alone worthwhile.

If you’re in the class, you’re generally included automatically. You don’t hire a lawyer, you don’t pay anything up front, and if the case produces money, you get a share only if you file a claim by the deadline stated in the notice you receive.

What Kinds of Cases Become Class Actions

Class actions show up across a wide range of disputes: consumer fraud, defective products, employment violations, securities fraud, data privacy breaches, and civil rights cases. What ties them together is a common injury traceable to common conduct by the defendant.

In federal court, the rules for group treatment come from Rule 23 of the Federal Rules of Civil Procedure. Before a case can proceed as a class action, a judge has to certify the class — a formal finding that the lawsuit is suitable for group handling. Four things have to be true:¹

The group is large enough that individual suits would be impractical. Courts often find this satisfied above roughly 40 members, though there’s no fixed cutoff.
The class members share common questions of law or fact whose answers would resolve an issue central to every member’s claim.
The named plaintiffs’ claims are typical of the rest of the class.
The named plaintiffs and their lawyers will adequately protect the interests of everyone in the group, including people who never participate directly.

Meeting those four is necessary but not enough. The case also has to fit one of the categories in Rule 23(b), and which category it falls under changes what rights class members have.

The Three Types of Class Actions

A Rule 23(b)(1) class covers situations where separate lawsuits would create a risk of inconsistent rulings or effectively decide the rights of people who aren’t in court, such as when a fixed pool of money has to be divided among many claimants.

A Rule 23(b)(2) class applies when the defendant has acted in a way that affects the whole group and the remedy sought is an injunction or a declaratory ruling rather than money. Civil rights discrimination cases often fall here.²

A Rule 23(b)(3) class is the most common, and it’s the one most consumers encounter. It covers cases seeking money damages, and it requires the court to find that common questions predominate over individual ones and that a class action is superior to other ways of resolving the claims. Only (b)(3) classes come with mandatory notice to members and the right to opt out.¹

How a Class Action Moves Through the Courts

A class action starts with a complaint that lays out the facts, the alleged wrongdoing, the proposed class definition, and the legal claims. Defendants usually respond with a motion to dismiss. If the case survives, the parties enter discovery — exchanging documents, answering written questions, and taking depositions. Discovery in class actions is often complex and can take years.³

The turning point is the motion for class certification. Plaintiffs argue the case meets Rule 23’s requirements, and the defense pushes back hard. The party seeking certification carries the burden of proof, and courts must conduct what the Supreme Court has called a “rigorous analysis,” sometimes weighing evidence that overlaps with the merits.⁴ If the court denies certification, the named plaintiffs can still pursue their own individual claims, but the group case is over.

If certification is granted, settlement talks often intensify. Trials are rare. By some estimates, fewer than one percent of class actions go to trial.³ Most cases that don’t get dismissed end in a negotiated settlement.

Notice, Settlement Approval, and What You Actually Have to Do

Because class members are bound by the outcome even if they never participated, judges act as fiduciaries for absent members when they review proposed settlements. There are two checkpoints: preliminary approval and final approval.

At preliminary approval, the court decides whether the deal is strong enough to justify sending notice to the class. Judges are expected to look critically at the terms rather than rubber-stamp them, examining whether the negotiation was at arm’s length and whether the proposed recovery is reasonable given the strength of the claims.⁵

Once preliminary approval is granted, notice goes out. For (b)(3) classes, the court must direct “the best notice that is practicable.” Since 2018 amendments to Rule 23, that notice can be delivered by email, digital media, or social media as well as traditional mail. The notice has to explain the case in plain language, describe the settlement, and tell you about your right to opt out or object.⁶

A final fairness hearing follows. The court considers objections, counts opt-outs, and decides whether the settlement is “fair, reasonable, and adequate.” Judges look for warning signs: coupon-only settlements with low redemption rates, agreements where attorney fees dwarf what the class receives, “clear sailing” clauses in which defendants agree not to contest the fee request, and reversion clauses that send unclaimed money back to the defendant.⁵

Automatic Inclusion, and How to Opt Out

Most class actions are opt-out proceedings. If you fit the class definition, you’re in unless you take steps to exclude yourself. The notice will tell you the deadline and the address for requesting exclusion. Opting out frees you to file your own lawsuit, but you give up any share of the class recovery.¹

There is one significant exception. Certain employment cases, particularly wage-and-hour claims under the Fair Labor Standards Act, are opt-in. Workers have to affirmatively join to be included.⁷

Is opting out worth it? Research on large securities and antitrust cases has shown that plaintiffs who opted out and filed their own suits sometimes recovered many times what the class settlement would have paid. In the $7.25 billion Visa/Mastercard interchange fee settlement, thousands of retailers opted out. But individual litigation is expensive, slow, and uncertain, and a better result is never guaranteed.⁸

Filing a Claim

When a settlement is finalized, class members who want money usually have to file a claim form by the stated deadline, online or by mail. Some settlements require proof of purchase or other documentation. Simpler ones accept claims without receipts. Instructions come with the notice or on a dedicated settlement website. Participation is free. You don’t pay a lawyer, and attorney fees come out of the settlement fund after court approval, not from your check.⁷

If you do nothing when notice arrives, you stay in the class, you’re bound by the outcome, and you don’t get paid. Filing the claim form is what triggers payment.

When money remains unclaimed after distribution, courts sometimes direct it to charitable organizations whose work relates to the class’s interests, a practice called cy pres. The approach has drawn criticism for benefiting charities rather than injured people, and for potential conflicts when class counsel or judges have ties to the recipient organization. The Supreme Court acknowledged these concerns in 2013 but has not set firm limits on the practice.⁹

How Attorney Fees Work

In class actions, attorney fees almost always come out of the settlement fund rather than getting billed to clients. This is called the “common fund” doctrine. Courts use two main methods to set the fees and increasingly require both as a check on each other.

The percentage-of-fund method awards fees as a share of the total recovery. Empirical research covering nearly 700 cases from 1993 to 2008 found the average fee-to-recovery ratio was about 23 percent.¹⁰ Class counsel typically request between 20 and 45 percent.¹¹ Some circuits, including the Ninth and Eleventh, use 25 percent as a starting benchmark.

The lodestar method multiplies the hours class counsel worked by a reasonable hourly rate, sometimes with a multiplier for case complexity. Used as a crosscheck on a percentage-based award, it can flag effective hourly rates that have run away from reason. In a 2024 Eighth Circuit case involving T-Mobile, the court found that a fee award translating to an effective rate of $7,000 to $9,500 per hour was excessive.¹¹

Courts have also begun setting the fee percentage based on what class members actually receive rather than the nominal settlement value. That shift responds to a longstanding criticism: lawyers collecting large fees while class members collect little.

Why the Payout Is Often Small

One of the persistent facts about consumer class actions is how few class members actually collect. In cases settled on a claims-made basis, claims rates are typically under 10 percent and frequently below one percent.¹² When notice is delivered through media advertisements rather than direct mail, the median claims rate has been reported at 0.023 percent.

The gap between a headline settlement number and what any individual receives can be stark. A Mayer Brown study of 148 federal class actions found that claims-made structures routinely produced payouts far below the announced figure. In one case involving RadioShack, a potential class of about 16 million customers produced roughly 83,000 claims, a rate just above half of one percent.¹² Across cases with public distribution data, the percentage of the class receiving funds ranged from 0.000006 percent to about 12 percent, with a single outlier at nearly 99 percent in a high-value ERISA case.¹³

Two takeaways matter for anyone receiving a class notice. First, filing the claim is what puts you in the small share who actually get paid. Second, expect individual amounts to be modest unless the case involves a large per-person injury.

Class Action vs. Mass Tort vs. Multidistrict Litigation

People often confuse class actions with two related procedures. If you were physically injured by a drug or a product, what you have is probably not going to be a class action.

A mass tort is a description, not a procedure — an event or pattern in which large numbers of people are harmed in a similar way, such as a defective drug or a toxic exposure. Those injuries can then be handled through a class action, through multidistrict litigation, or through separate individual suits.¹⁴

Multidistrict litigation, or MDL, consolidates separate federal lawsuits from different districts before a single judge for pretrial proceedings such as discovery, motions, and the selection of “bellwether” trial cases to gauge settlement values. Each plaintiff keeps their own case and, in theory, their own right to a trial. An MDL doesn’t produce one verdict for everyone the way a class action does. Personal injury and wrongful death cases usually end up in MDLs rather than class actions because the damages vary too much from person to person for class treatment.¹⁵

In a class action there is one lawsuit and one outcome. If the class wins or settles, all members share in the result and are generally barred from filing their own suits over the same harm.¹⁴

Where Class Actions Are Active Now

Data Privacy and Biometrics

Illinois’ Biometric Information Privacy Act continues to generate significant litigation, with at least 100 putative class actions filed under the statute in 2025. The law provides statutory damages of $1,000 per negligent violation and $5,000 per willful violation. Recent resolutions include a facial recognition MDL settlement of roughly $51.75 million and a separate $47.5 million settlement over facial image data.¹⁶ The Texas Attorney General secured a $1.375 billion settlement with Google related in part to biometric data collection.

Online privacy litigation more broadly has surged: nearly 4,000 online privacy lawsuits were filed in 2024, up from just over 200 in 2023. As of January 2026, 20 states have comprehensive privacy laws in effect, though most do not include a private right of action, so plaintiffs pursue claims under wiretap statutes, common-law invasion of privacy theories, and other routes.¹⁷

Recent Large Settlements

Class-action activity spans multiple sectors. A $332 million settlement was finalized in June 2025 in an ERISA case against Colgate-Palmolive over improper pension calculations. A $200 million settlement was reached in the generic drug price-fixing MDL involving Sun Pharmaceutical and Taro Pharmaceutical, covering an alleged conspiracy to inflate prices on at least 18 drugs. A $30 million settlement resolved claims that Google and YouTube unlawfully tracked children under 13 for targeted advertising.¹⁸

Historically, the largest class-action-related settlement in U.S. history is the 1998 Tobacco Master Settlement Agreement, in which Philip Morris, R.J. Reynolds, Brown & Williamson, and Lorillard agreed to pay $206 billion over 25 years to 46 states for tobacco-related healthcare costs. Other landmark resolutions include BP’s $20 billion Deepwater Horizon settlement in 2016, Volkswagen’s $14.7 billion diesel emissions settlement between 2014 and 2016, and the $7.2 billion Enron securities fraud settlement in 2008.¹⁹

If You Get a Class Action Notice

The single practical thing to know: read the notice. It will tell you whether you’re a member, what the settlement offers, the claim deadline, the opt-out deadline, and how to file. If you want money, file the claim by the deadline, following the instructions on the notice or the settlement website. If you’d rather keep your right to sue on your own, follow the exclusion procedure before the opt-out deadline. If you do nothing, you remain in the class, you’re bound by whatever the court approves, and you won’t be paid.

1
Cornell Law Institute. Federal Rules of Civil Procedure, Rule 23
2
Congress.gov. Class Action Lawsuits: A Legal Overview
3
LawInfo. The Phases of a Class Action Lawsuit
4
Stanford Law School. Wal-Mart Stores v. Dukes, 564 U.S. 338
5
U.S. Courts. Manual for Complex Litigation – Class Action Settlements
6
Duke Law. Guidance on New Rule 23 Class Action Settlement Provisions
7
ClassAction.org. How to Join a Class Action Lawsuit
8
Molo Lamken LLP. Opting Out of a Class Action
9
Duke Law. Cy Pres in Class Action Settlements
10
U.S. Courts. Attorneys’ Fees in Class Actions
11
ClassActionsBrief.com. Courts Scrutinize High Attorneys’ Fees Awards in Class Action Settlements
12
Duke Law. Claims-Made Class Action Settlements
13
Institute for Legal Reform. Do Class Actions Benefit Class Members?
14
Massachusetts Bar Association. Multidistrict Litigation, Consolidated Actions, and Class Actions
15
Trial Lawyers Journal. What Is Multidistrict Litigation?
16
Privacy World. 2025 Year in Review: Biometric Privacy Litigation
17
Stinson LLP. A New Era of Comprehensive Privacy Laws and the Surge in Data Privacy Litigation
18
Expert Institute. Latest Class Action Payouts
19
Civille. The Largest Legal Settlements in History