When someone dies because of another person’s carelessness or intentional act, the surviving family members have the right to file a wrongful death lawsuit. But winning one is not automatic. Courts follow a specific set of rules to decide who is legally responsible for the death. Understanding how these rules work can help you know what to expect if you ever need to bring a claim.

The first and most important thing a court looks at is whether the person who caused the death was negligent. Negligence simply means failing to act with the ordinary care that a reasonable person would use in the same situation. For example, a driver who runs a red light and hits a pedestrian is negligent because any reasonable driver knows to stop at a red light. A doctor who leaves a surgical instrument inside a patient during surgery is negligent because that falls far below the accepted standard of medical care. In a wrongful death case, you must show that the defendant’s negligence directly caused the death.

To prove negligence, the family’s lawyer must establish four things. First, the defendant owed a duty of care to the deceased person. In plain terms, the defendant had a legal obligation to act in a way that would not harm the deceased. A driver owes a duty to everyone on the road to drive safely. A property owner owes a duty to keep their premises free of hidden dangers. A product manufacturer owes a duty to make sure their products are not defective. If no duty existed, the case ends right there.

Second, the defendant breached that duty. A breach happens when the defendant does something they should not have done, or fails to do something they should have done. Speeding, failing to fix a broken step, selling a car with faulty brakes—all are breaches of duty. The court compares the defendant’s actions to what a reasonably careful person would have done, not what a perfect person would have done.

Third, the breach must be the direct cause of the death. This is often the hardest part to prove. The family must show that “but for” the defendant’s actions, the death would not have occurred. If the deceased was already dying from a terminal illness when the accident happened, the court may find that the defendant’s negligence was not the real cause. The death must be a foreseeable result of the breach. For instance, if a drunk driver runs a stop sign and hits a car, it is foreseeable that someone could die. If a store owner leaves a wet floor without a warning sign and a customer slips, it is foreseeable that the customer could hit their head and die.

Fourth, the death must have caused actual damages to the family. Damages include funeral expenses, lost income the deceased would have earned, and the emotional pain of losing a loved one. Without damages, there is no case—even if the defendant was clearly negligent.

Courts also consider something called comparative negligence. This is a fancy term for a simple idea: what if the person who died also did something careless? In many states, if the deceased was partly at fault for their own death, the amount the family can recover is reduced by that percentage. For example, if a pedestrian jaywalks and gets hit by a speeding driver, the court might find the pedestrian 30 percent at fault and the driver 70 percent at fault. The family would only get 70 percent of the total damages. In a few states, if the deceased was more than 50 percent at fault, the family gets nothing.

Another key point is that wrongful death cases are civil lawsuits, not criminal charges. The standard of proof is different. In criminal court, the prosecutor must prove guilt beyond a reasonable doubt. In a civil wrongful death case, the family only needs to prove liability by a preponderance of the evidence. That means it is more likely than not—over 50 percent—that the defendant’s negligence caused the death. This is a lower bar, but it still requires solid evidence like police reports, medical records, witness statements, and expert testimony.

Time limits also matter. Every state has a statute of limitations for wrongful death claims. This is a legal deadline that typically ranges from one to three years from the date of death. Miss it, and you lose your right to sue forever. Some exceptions exist, such as if the defendant intentionally hid the cause of death, but those are rare.

Finally, the court must decide who gets the money. Wrongful death damages are meant to compensate the survivors—spouse, children, parents, or other dependents—for their loss. The money does not go to the deceased person’s estate in most states, though some allow that for specific expenses. The court distributes the award according to state law, based on each survivor’s relationship to the deceased and the financial and emotional harm they suffered.

In short, winning a wrongful death case requires proving that someone else’s carelessness or intentional act caused the death, that the deceased was not primarily at fault, and that the family suffered real losses. It is a straightforward legal test, but the evidence must be strong. If you are considering a claim, the sooner you gather facts and talk to a lawyer, the better your chances.