Uniting for Justice: A Guide to Starting a Class Action

By BMA Law Research Team

Direct Answer

Starting a class action begins with filing a complaint that meets the requirements of Rule 23 of the Federal Rules of Civil Procedure. The complaint must describe the common injury, identify the class, and explain why the named plaintiff is a suitable representative. Before a court will allow the case to proceed, it must certify the class under one of Rule 23’s subsections, most commonly (b)(1) for cases based on a common question of law or fact, or (b)(3) for cases seeking damages for a common injury.

To be eligible, the plaintiff must satisfy the statutory prerequisites found in 28 U.S.C. § 1332 (diversity jurisdiction) or 28 U.S.C. § 1331 (federal question jurisdiction). The plaintiff also must show that the class is so numerous that joinder of all members is impracticable, that the claims of the class members are typical of the representative’s claims, and that the representative will fairly and adequately protect the interests of the class. After filing, the court will hold a certification hearing where parties present evidence and argument on these points.

• Draft a complaint that clearly defines the class, common injury, and representative’s standing.
• Verify jurisdiction under 28 U.S.C. § 1332 (diversity) or § 1331 (federal question).
• Prepare to satisfy Rule 23’s numerosity, commonality, typicality, and adequacy requirements.
• File the complaint in the appropriate federal district court and serve the named defendant(s).
• Expect a certification hearing; the court’s order will determine whether the case proceeds as a class action.

Why This Matters

Class actions allow individuals with similar, often small‑value claims to pool resources and obtain relief that would be impractical on a case‑by‑case basis. Successful certification can give a plaintiff the leverage to negotiate a settlement, obtain injunctive relief, or achieve systemic change that benefits thousands of consumers, employees, or investors.

Conversely, failure to meet the procedural thresholds can result in dismissal, wasted litigation costs, and missed opportunities for collective redress. Understanding the exact steps and legal standards at the outset helps potential plaintiffs assess the viability of their case and avoid costly procedural missteps.

How It Actually Works

1. Identify the claim pattern. Gather the facts that link many individuals to the same wrongful conduct, such as a defective product, deceptive marketing, or a widespread breach of contract.
2. Assess numerosity and commonality. Verify that the potential class is large enough to justify a class action and that the legal questions are the same for all members.
3. Check Rule 23 eligibility. Review the Federal Rules of Civil Procedure, especially Rule 23(a) and (b), to confirm that the case meets the statutory criteria for a class action.
4. Draft a complaint that meets pleading standards. Include a clear statement of the plaintiff’s claim, the alleged injury, and the class definition. Cite relevant statutes such as the Fair Credit Reporting Act or the Telephone Consumer Protection Act when applicable.
5. File the complaint in the proper venue. Choose a federal district court or state court that has jurisdiction over the claims and the defendants.
6. Serve the defendants. Follow the Federal Rules of Civil Procedure for service of process, ensuring that each named defendant receives proper notice.
7. Seek class certification. File a motion for certification and be prepared to present evidence of numerosity, commonality, typicality, and adequacy of representation.
8. Manage discovery and settlement negotiations. Conduct document production, depositions, and expert testimony while evaluating settlement offers that may be resolved through mediation or arbitration.

Common Mistakes

• Failing to demonstrate that the alleged injury is the same for every potential class member.
• Choosing a court that lacks subject‑matter jurisdiction over the statutory claims.
• Neglecting to include a clear and concise definition of the class in the complaint.
• Skipping the requirement to show that the named plaintiff will adequately represent the class’s interests.
• Delaying the filing of a class certification motion until after extensive discovery, which can weaken the court’s view of commonality.
• Overlooking mandatory procedural deadlines, such as the statute of limitations or the deadline for class certification under local court rules.

Frequently Asked Questions

What is the first step to take if I think I have a class‑action claim?

The first step is to gather all relevant documents and evidence that show how you were harmed in the same way as other potential plaintiffs. Then contact a qualified attorney or a self‑directed case‑preparation service to evaluate whether the facts satisfy the requirements for a class action under Rule 23 of the Federal Rules of Civil Procedure.

Do I need to file a lawsuit on my own, or can I join an existing class action?

If an existing lawsuit already covers the same legal and factual issues, you can file a claim of “intervention” or ask the court to add you as a member of the class. If no such case exists, a new complaint must be filed and the court will decide whether the case qualifies as a class action.

What are the key criteria a court looks at to certify a class?

The court evaluates numerosity, commonality, typicality, and adequacy of representation as outlined in Rule 23. The class must be large enough that individual lawsuits would be impractical, and the legal questions must be common to all members.

How long does it usually take for a class action to be certified?

Certification can take several months to more than a year, depending on the complexity of the case and the court’s schedule. The parties often exchange extensive discovery before the court holds a certification hearing.

Next Steps

Collect your evidence, write a concise summary of the alleged wrongdoing, and reach out to an experienced attorney or a reputable case‑preparation service. They can help you assess the merits of a class‑action claim and guide you through the filing process.