Class Action Lawsuits: Group Litigation and Legal Requirements
When a company defrauds millions of consumers out of twenty dollars each, no individual has enough at stake to justify the cost of a lawsuit. The economic reality is that small injuries, spread across a large population, would go unredressed if each victim had to file their own claim. Class action lawsuits solve this problem by allowing one or more representative plaintiffs to sue on behalf of an entire group—the class—and obtain a judgment that binds all members.
The class action is one of the most powerful procedural devices in American civil litigation. It aggregates hundreds, thousands, or even millions of individual claims into a single action, creating leverage that individual plaintiffs could never command. The Federal Rules of Civil Procedure Rule 23 governs class actions in federal courts, and most states have analogous procedural rules for class actions filed in state court.
The Origins and Purpose of Class Actions
The class action has deep roots in equity practice, where courts of chancery allowed representative suits to avoid a multiplicity of actions. The modern class action was shaped by the 1966 amendments to FRCP Rule 23, which created the current framework for class certification. The Advisory Committee Notes to the 1966 amendments explained that the rule was designed to cover situations in which “the prosecution of separate actions by or against individual members of the class would create a risk of inconsistent or varying adjudications.”
The policy goals of class actions include judicial economy (resolving many claims in one proceeding), access to justice (enabling claims that would otherwise be uneconomical to pursue individually), behavior modification (deterring wrongful conduct that causes dispersed harm), and consistent adjudication (ensuring that similarly situated plaintiffs receive similar treatment).
Prerequisites for Class Certification
FRCP Rule 23(a) establishes four prerequisites that must be satisfied for any case to proceed as a class action. These requirements are known as numerosity, commonality, typicality, and adequacy of representation.
Numerosity
The class must be so numerous that joinder of all members is impracticable. There is no fixed numerical threshold, but classes with fewer than twenty-five members are rarely certified, while classes with more than forty members typically satisfy the requirement by a wide margin. Courts consider the geographic dispersion of class members, the practicality of individual suits, and the size of each individual claim in evaluating impracticability of joinder.
Commonality
There must be questions of law or fact common to the class. The Supreme Court’s decision in Wal-Mart Stores, Inc. v. Dukes (2011) significantly tightened the commonality requirement. The Court held that commonality requires the plaintiff to demonstrate that the class members “have suffered the same injury” and that their claims depend upon “a common contention” that is “capable of classwide resolution.” The key inquiry is whether classwide proceedings “will generate common answers apt to drive the resolution of the litigation.”
Typicality
The claims or defenses of the representative parties must be typical of the claims or defenses of the class. Typicality ensures that the class representatives’ interests are aligned with those of absent class members. The requirement is satisfied when the named plaintiffs’ claims arise from the same event or course of conduct and are based on the same legal theory as the class claims.
Adequacy of Representation
The representative parties and their counsel must fairly and adequately protect the interests of the class. This requirement has two components: the named plaintiffs must not have interests antagonistic to the class, and class counsel must be qualified, experienced, and able to conduct the litigation. Courts scrutinize potential conflicts of interest, such as a representative plaintiff who has a unique claim for damages that diverges from the class majority.
Types of Class Actions Under Rule 23(b)
Once the Rule 23(a) prerequisites are satisfied, the plaintiff must show that the case falls within one of three categories under Rule 23(b).
Rule 23(b)(1): Risk of Inconsistent Adjudications
This category applies when individual actions would create a risk of inconsistent or varying adjudications that would establish incompatible standards of conduct for the party opposing the class. It also applies when individual adjudications would, as a practical matter, be dispositive of the interests of other nonparties or substantially impair or impede their ability to protect their interests. This category is commonly used for “limited fund” cases where multiple claimants seek to recover from a finite pool of assets.
Rule 23(b)(2): Injunctive or Declaratory Relief
This category applies when the party opposing the class has acted or refused to act on grounds generally applicable to the class, making final injunctive or declaratory relief appropriate. Rule 23(b)(2) classes are common in civil rights, employment discrimination, and institutional reform cases. In Wal-Mart v. Dukes, the Court held that a (b)(2) class cannot be certified when the plaintiffs primarily seek monetary damages.
Rule 23(b)(3): Predominance and Superiority
This is the most common category for damages class actions. Certification under Rule 23(b)(3) requires the court to find that questions of law or fact common to class members predominate over any questions affecting only individual members and that a class action is superior to other available methods for fairly and efficiently adjudicating the controversy. Courts evaluate predominance by considering the complexity of individual issues such as damages calculations, reliance, and affirmative defenses.
Class Action Procedure
Class Certification
The plaintiff must move for class certification early in the litigation. The court conducts a “rigorous analysis” to determine whether the Rule 23 requirements are satisfied. Wal-Mart v. Dukes requires courts to probe behind the pleadings and resolve factual disputes necessary to determine whether the requirements have been met. The class certification order defines the class and the claims, issues, or defenses that will be tried on a classwide basis.
Notice to Class Members
For Rule 23(b)(3) class actions, the court must direct the best notice practicable to class members, including individual notice to all members who can be identified through reasonable effort. The notice must inform class members of the nature of the action, the definition of the class, the right to opt out (exclude themselves from the class), and the binding effect of the judgment on class members who do not opt out.
Settlement of Class Actions
Class action settlements require court approval. The court must find that the settlement is fair, reasonable, and adequate. Class members must receive notice of the proposed settlement and an opportunity to object. Courts hold fairness hearings where class members can present objections, and the court evaluates factors such as the strength of the plaintiffs’ case, the amount of the settlement, the stage of the proceedings, and the opinion of class counsel.
Appeals of Class Certification Decisions
A party may seek interlocutory review of a class certification order under FRCP Rule 23(f), which gives the court of appeals discretion to permit an appeal from an order granting or denying class certification. This mechanism allows appellate courts to resolve class certification issues before the case proceeds to trial on the merits. See appeals in civil cases for more on the appellate process.
Frequently Asked Questions
How do I join a class action lawsuit? If a class has been certified and you are a member of the defined class, you will receive notice describing the action and your rights. You are automatically included in the class unless you exercise your right to opt out. You can choose to opt out if you want to pursue your own individual lawsuit. You generally do not need to take any action to join—the class representative and class counsel represent you.
How much money will I get from a class action settlement? The amount each class member receives depends on the size of the settlement fund and the number of claimants. In consumer class actions with large classes, individual recoveries can be very small—sometimes just a few dollars or a coupon. In securities or mass tort class actions, individual recoveries can be substantial. Attorneys’ fees are typically deducted from the settlement fund, often 25 to 30 percent, subject to court approval.
What is the difference between a class action and a mass tort? In a class action, the court resolves common issues collectively for all class members, and absent class members are bound by the judgment unless they opt out. In mass tort litigation (such as asbestos or pharmaceutical injury cases), individual plaintiffs file separate lawsuits that are consolidated for pretrial proceedings through multidistrict litigation (MDL) under 28 U.S.C. § 1407. MDL cases are not class actions—each plaintiff retains their own case and must prove individual causation and damages.
Can I sue as a class action without a lawyer? No. Class actions require experienced class counsel who can satisfy the adequacy of representation requirement. FRCP Rule 23(g) requires the court to appoint class counsel, considering the work counsel has done, counsel’s experience in class actions, counsel’s knowledge of the applicable law, and the resources counsel will commit to representing the class.