A cause of action is the legally recognized basis for suing and asking a court for relief.
Cause of action means the legally recognized basis for suing and asking a court for relief.
A lawsuit is not just a statement that something bad happened. The plaintiff must usually identify a recognized claim that the law allows the court to hear. That recognized claim is the cause of action.
This matters because facts alone do not tell you whether relief is available. A reader needs to know which legal theory turns those facts into a claim. If no valid cause of action exists, the complaint may be dismissed even if the underlying story sounds unfair.
Cause of action appears in complaints, motions to dismiss, summary-judgment arguments, and appellate review. It often appears when courts ask whether the plaintiff pleaded the required elements of the claim.
A buyer says a seller lied during a transaction. To proceed in court, the buyer still needs a recognized cause of action such as fraud, negligent misrepresentation, or breach of contract, depending on the facts and governing law.
A cause of action is different from a remedy. The cause of action tells the court why the plaintiff may sue. The remedy tells the court what form of relief may be appropriate. It is also different from jurisdiction, which asks whether the court has power to hear the dispute at all.