A class action lawsuit is a single legal case filed on behalf of a large group of people who were all harmed by the same company in the same way, instead of each person filing a separate lawsuit. One or a few named plaintiffs represent the entire group, called the class, and the outcome (a settlement or a verdict) applies to every class member, whether or not they personally showed up in court.
That definition explains why class actions exist at all. If a company overcharges ten million customers $8 each, no individual has a strong enough reason to hire a lawyer and sue over $8. But $8 times ten million is $80 million, a real amount worth fighting over collectively. A class action turns thousands of small, individually unworkable claims into one case big enough to bring.
How a class action actually works, step by step
1. A lawsuit is filed. One or more people who believe a company harmed them file a complaint, usually through a law firm that specializes in class actions.
2. The court decides whether to certify the class. This is the step that separates a class action from an ordinary lawsuit. In federal court, this happens under Rule 23 of the Federal Rules of Civil Procedure, and the plaintiffs have to show the group is large enough that individual lawsuits would be impractical, that everyone’s claims share common legal questions, that the named plaintiffs’ situations are typical of the group, and that they can represent the class fairly. If the judge is not satisfied, the case does not proceed as a class action, though it can still continue as an individual case.
3. Notice goes out to the class. Once certified, or once a proposed settlement is reached, class members have to be told, usually by email, mail, or a public notice campaign, since that is what class action settlement emails and postcards are.
4. The case resolves, usually through a settlement. The large majority of class actions end in a negotiated settlement rather than a trial verdict. The company typically does not admit wrongdoing; it pays to end the case.
5. Class members file claims, or are paid automatically. Depending on the settlement, you may need to submit a claim form, or you may be paid without doing anything if the company already has your information on file.
Class action versus suing individually
| Class action | Individual lawsuit | |
|---|---|---|
| Who’s involved | You’re one of potentially thousands or millions of class members | Just you |
| Your control | Very limited. A few named plaintiffs and their attorneys make the decisions | Full control over strategy and settlement decisions |
| Cost to you | Nothing. Attorneys are paid from the settlement fund | You typically pay or share fees with your attorney |
| Typical payout | Usually modest per person, since the fund is divided among a large group | Can be much larger if your individual damages are significant |
| Effort required | Minimal. File a claim form or do nothing | Substantial. You have to actively litigate |
If your individual losses are large, a class action settlement is not always your best option, which is exactly what the opt-out right exists for. You can leave the class and pursue your own case instead, though this is a decision worth making with an attorney’s input rather than alone. Our guide to how class action settlements work covers the deadlines and mechanics of that choice in more depth.
What a class action is not
It is not a scam by default. The format, an unexpected email about money from a company you used years ago, resembles common scam patterns, which is exactly why so many people delete legitimate notices. Real settlement notices come from a claims administrator and never ask you to pay anything to receive money you’re owed. Our guide to class action settlement scams covers how to tell the difference.
It is not a guarantee that the company did something wrong. Most settlements explicitly state that the defendant denies all wrongdoing. A settlement resolves the dispute; it does not establish guilt the way a trial verdict would.
It is not the same as a mass tort. A mass tort (common in pharmaceutical and product injury cases) involves many individual lawsuits over similar injuries that may be coordinated for efficiency, but each case is evaluated somewhat individually. A class action treats the group as a single unit throughout.
How to know if you’re part of one
You generally find out one of two ways: you receive a notice by mail, email, or public announcement, or you actively check whether a company you’ve done business with has an open settlement. Notice is not a requirement for eligibility, it is simply an attempt to reach you, so plenty of eligible people never receive one. Our guide to checking your eligibility for a class action settlement walks through how to verify this yourself against the actual class definition rather than waiting for a notice to arrive.
If you’re looking for settlements currently accepting claims, our list of open class action settlements is updated regularly and verified against each administrator’s own site.
Frequently asked questions
What is a class action lawsuit in simple terms?
A single lawsuit filed on behalf of a large group of people harmed the same way by the same company, rather than each person suing separately. The court’s decision or the settlement applies to the whole group at once.
How do you become part of a class action?
You typically don’t sign up to join. If you meet the class definition, the specific group of people the case covers, you’re automatically a class member unless you actively opt out. You may receive a notice, but eligibility depends on the class definition, not on receiving a notice.
Do I have to pay anything to join a class action lawsuit?
No. Attorneys’ fees in a class action come out of the settlement fund itself, approved by the court, not out of your pocket. Any request for payment to file a claim or receive your settlement money is a scam.
What’s the difference between a class action and a class action settlement?
A class action is the lawsuit itself. A settlement is one possible outcome of that lawsuit, an agreement to resolve the case, usually by paying money to the class, without going to trial. Most class actions end in a settlement rather than a trial verdict.
Can I sue on my own instead of joining a class action?
Generally yes, by opting out of the class before the exclusion deadline. This gives up your right to a settlement payment but preserves your right to pursue an individual case, which can make sense if your personal damages are significantly larger than what the class settlement would pay. This decision is worth discussing with an attorney before the deadline passes.
How long does a class action lawsuit take?
There’s no fixed timeline. Many class actions take two to five years from filing to a final settlement, and payment typically follows several months to over a year after final court approval, once any appeal period expires.
Disclaimer: This article is general information, not legal advice. Class action procedures are governed by court rules that vary somewhat by jurisdiction. Consult a qualified attorney for guidance on your specific situation.