Proving that someone acted carelessly isn’t enough to win a personal injury case. You must also prove their carelessness actually caused your injuries. This element—causation—connects the defendant’s breach of duty to the harm you suffered.
Without causation, there’s no case. Even if a driver ran a red light, you can’t recover damages from them unless that specific action caused your accident and injuries.
Two Types of Causation
North Carolina recognizes two types of causation that must be established in a personal injury case: cause-in-fact and proximate cause. Both must be proven to hold a defendant liable.
Cause-in-Fact (The “But For” Test)
Cause-in-fact asks a simple question: Would your injuries have occurred “but for” the defendant’s actions?
If your injuries wouldn’t have happened without what the defendant did, cause-in-fact is established. According to the Legal Information Institute at Cornell Law School, this test serves to exclude conduct that didn’t actually contribute to the plaintiff’s harm.
For example, if a drunk driver rear-ends your car at a stoplight and you suffer whiplash, the but-for test is satisfied. But for the drunk driver hitting you, you wouldn’t have whiplash.
Proximate Cause (Foreseeability)
Proximate cause goes a step further. It asks whether your injuries were a foreseeable result of the defendant’s conduct.
The law doesn’t hold people responsible for every possible consequence of their actions—only those that were reasonably predictable. If the harm that occurred was a foreseeable consequence of the defendant’s negligence, proximate cause is established.
Consider this example: A driver runs a red light and hits another car. The driver of that car suffers a broken arm. A broken arm is a foreseeable result of a car collision, so proximate cause exists.
But what if the collision caused a chain reaction that led to an unforeseeable outcome? Courts examine whether the type of harm was predictable, even if the exact sequence of events wasn’t.
Intervening Causes
Sometimes, events occur between the defendant’s negligent act and your injury. These are called intervening causes, and they can affect whether proximate cause exists.
If an intervening cause was foreseeable, the defendant typically remains liable. But if something completely unexpected breaks the chain of events—an unforeseeable intervening cause—the defendant may not be held responsible for the ultimate harm.
For instance, if a negligent driver causes a minor fender-bender, but then a third party pulls out a weapon and assaults one of the drivers, that criminal act would likely be considered an unforeseeable intervening cause that breaks the chain of causation.
How Causation Applies in Common Cases
Car Accidents
In most car accident cases, causation is relatively straightforward. A driver runs a stop sign, hits your vehicle, and you’re injured. The connection between their negligence and your harm is direct and clear.
Causation becomes more complex when there are pre-existing conditions or multiple factors at play. Insurance companies often argue that your injuries were caused by something other than the accident—or that a prior condition is really to blame.
Medical Malpractice
Medical malpractice cases often hinge on causation. It’s not enough to show a doctor made an error. You must prove that error—rather than the underlying illness or condition—caused your harm.
If a store owner fails to clean up a spill and you slip, causation requires proving that the spill (not something else, like your own footwear or an unrelated medical condition) caused your fall and resulting injuries.
Proving Causation
Establishing causation requires evidence that links the defendant’s conduct to your injuries. This may include:
- Medical records showing when symptoms began and their likely cause
- Expert testimony from doctors or accident reconstruction specialists
- Photographs and documentation from the accident scene
- Timeline evidence showing the sequence of events
- Testimony from witnesses who saw what happened
In complex cases, expert witnesses often play a crucial role in explaining how the defendant’s actions led to your specific injuries.
Causation and Contributory Negligence
In North Carolina, causation cuts both ways. Because the state follows contributory negligence, defendants often try to argue that your own actions—not theirs—were the true cause of your injuries.
If the defendant can show that your negligence was a proximate cause of your harm, you may be barred from recovery entirely. This makes it essential to clearly establish that the defendant’s conduct was the direct and foreseeable cause of what happened to you.
Talk to a Charlotte Personal Injury Attorney
Causation can be one of the most contested elements in a personal injury case. Insurance companies frequently dispute whether their policyholder’s actions truly caused your injuries—or whether something else is to blame.
The Layton Law Firm has over 15 years of experience helping accident victims in Charlotte prove every element of their claims, including causation. We work with medical experts and accident reconstruction specialists when needed to build the strongest possible case.
Contact us today to schedule your free consultation.