Damage (OCR A-Level Law): Revision Notes
Damage
To establish liability in negligence, the claimant must prove that they suffered actual damage as a result of the defendant's breach of duty. This is the third essential element of a negligence claim, following the establishment of a duty of care and breach of that duty.
Damage serves as the crucial link between the defendant's wrongful conduct and the harm suffered by the claimant. Without provable damage, a negligence claim cannot succeed, even if a duty was owed and breached. The law requires the claimant to demonstrate two key aspects: that the damage was factually caused by the breach, and that it was not too remote a consequence of the defendant's actions.
Requirements for establishing damage
For damage to be legally recoverable in negligence, two fundamental requirements must be satisfied:
Causation: The damage must have been caused by the defendant's breach of duty. This is established through the 'but for' test, which asks whether the harm would have occurred if the defendant had not breached their duty.
Remoteness: The damage must not be too remote from the breach. This means there must be a sufficient legal connection between the defendant's wrongful act and the harm suffered. If the damage is deemed too remote, the law will not hold the defendant responsible, even if factual causation is established.
These two requirements work together to ensure that defendants are only liable for harm that was genuinely caused by their breach and that bears a reasonable relationship to their wrongful conduct. Both causation and remoteness must be satisfied for a successful negligence claim.
Factual causation and the 'but for' test
Factual causation establishes whether there is a direct causal link between the defendant's breach of duty and the claimant's injury or property damage. This is determined by applying the 'but for' test: would the claimant have suffered the harm but for the defendant's breach?
If the answer is no – meaning the harm would not have occurred without the breach – then factual causation is established. However, if the harm would have happened anyway, regardless of the breach, then causation fails and the claim cannot succeed.
Barnett v Chelsea Hospital (1969)
Facts: A nightwatchman attended a hospital casualty department complaining of severe vomiting after drinking tea. The doctor on duty refused to examine him and told him to go home and see his own doctor. The man died several hours later from arsenic poisoning.
Legal principle: The court held that while the doctor had breached his duty of care by failing to examine the patient, the claim failed on causation. Medical evidence showed that even if the doctor had examined and treated the man, he would still have died from the poisoning – it was too advanced to be treatable.
Application: This case demonstrates that a breach of duty alone is insufficient for liability. The claimant must prove that the breach actually caused the damage. Here, the man would have died anyway, so the 'but for' test was not satisfied. The harm would have occurred but for the breach, meaning the breach did not cause the death.
Legal causation (remoteness of damage)
Even when factual causation is established, the damage must not be too remote from the breach. Legal causation asks whether the type of harm suffered was a reasonably foreseeable consequence of the defendant's breach. This principle prevents defendants from being held liable for bizarre or highly unusual consequences that could not have been anticipated.
The test for remoteness focuses on foreseeability: was the type or kind of damage that occurred reasonably foreseeable at the time of the breach? If the damage was unforeseeable, it is considered too remote, and the defendant will not be liable even though their breach factually caused the harm.
The Wagon Mound (1961)
Facts: The defendants negligently spilled oil into Sydney Harbour from their ship. The oil spread to a wharf where welding work was taking place. The oil ignited unexpectedly, causing a fire that destroyed the wharf and several boats moored there.
Legal principle: The Privy Council held that the defendants were not liable for the fire damage. While it was foreseeable that the oil spillage might cause pollution damage or fouling of the wharf, it was not reasonably foreseeable that the oil would ignite and cause fire damage.
Application: This landmark case established that damage must be of a foreseeable type. The test is whether a reasonable person in the defendant's position would have foreseen the general type of harm that occurred. Here, fire damage was too remote from the foreseeable consequences of an oil spill, so the claim failed.
Refinements to the remoteness test
While the basic test requires foreseeability of the type of damage, the courts have developed important refinements that make the remoteness test more flexible and fair:
Novus actus interveniens (new intervening acts): Sometimes an event occurs after the defendant's breach that contributes to or causes the damage. If this intervening act is foreseeable, it will not break the chain of causation, and the damage will not be considered too remote. However, if the intervening act is unforeseeable and independent, it may be a novus actus interveniens that breaks the causal link.
The precise chain of events need not be foreseeable: While the type of damage must be foreseeable, the exact sequence of events leading from the breach to the damage does not need to be predicted.
Hughes v Lord Advocate (1962)
Facts: Post Office workers left a manhole uncovered and surrounded by paraffin lamps as a warning. Two young boys took one of the lamps to explore the manhole. One boy accidentally knocked the lamp into the hole, causing an unexpected explosion that severely burned him.
Legal principle: The House of Lords held that the defendants were liable. While the precise manner in which the injury occurred (the explosion) was not foreseeable, the general type of harm – burns from the paraffin lamps – was foreseeable.
Application: This case shows that the law does not require defendants to foresee the exact way in which damage will occur. It is sufficient that the general type of harm was reasonably foreseeable. The explosion was an unusual sequence of events, but burns from paraffin were a foreseeable type of injury.
The extent of damage need not be foreseeable (the thin-skull rule): Defendants must take their victims as they find them. If the claimant has a particular vulnerability or pre-existing condition that makes them more susceptible to injury, the defendant is liable for the full extent of the harm, even if a normal person would have suffered less serious consequences.
Smith v Leech Brain (1962)
Facts: Due to the defendant's negligence, the claimant suffered a minor burn to his lip while working. The burn was relatively trivial, but it triggered cancer in pre-malignant cells that were already present in the claimant's lip. The claimant died from cancer three years later.
Legal principle: The court held that the defendant was liable for the death from cancer. While the extent of harm was unforeseeable, the burn itself was foreseeable. The defendant must take the victim as they find them, including any unusual susceptibilities or pre-existing conditions.
Application: This case establishes the thin-skull rule in negligence. Once it is established that some harm of a foreseeable type was caused (here, the burn), the defendant is liable for all consequences of that harm, even if the severity is magnified by the claimant's particular vulnerability. The rule is sometimes expressed as "you must take your victim as you find them" or the "eggshell skull" principle.
Key cases on damage
The following table summarizes the leading authorities on causation and remoteness:
| Case | Facts | Legal principle |
|---|---|---|
| Barnett v Chelsea Hospital (1969) | A doctor refused to examine a man who had been poisoned. Even if the doctor had examined him, medical evidence showed he could not have saved the patient's life. | Damage must have been caused by the breach. The 'but for' test must be satisfied – if the harm would have occurred anyway, causation fails. |
| The Wagon Mound (1961) | A ship negligently leaked oil into Sydney Harbour. The oil unexpectedly ignited, causing a fire that destroyed a wharf and boats. | Damage must be of a foreseeable type. If the kind of harm that occurred was not reasonably foreseeable, it is too remote and not recoverable. |
| Hughes v Lord Advocate (1962) | Two boys exploring an uncovered manhole caused an unforeseeable explosion with a paraffin lamp, resulting in serious burns. | The precise chain of events leading to the damage need not be foreseeable. It is sufficient that the general type of harm was reasonably foreseeable. |
| Smith v Leech Brain (1962) | A minor burn to the claimant's lip triggered cancer in pre-existing malignant cells. The claimant died from cancer three years later. | It is not necessary for the extent of the damage to be foreseeable. Defendants must take their victims as they find them (the thin-skull rule). |
Exam technique for damage questions
When answering problem questions on damage in negligence, use a structured approach to ensure you address all relevant issues:
Identify the legal issue: Determine whether you need to discuss factual causation, legal causation, or both.
Describe the relevant legal principles: Explain the 'but for' test and/or the remoteness test, depending on the issue.
Provide examples from case law: Use cases like Barnett, The Wagon Mound, Hughes, or Smith v Leech Brain to illustrate the principles.
Apply the law to the scenario: Analyse the specific facts of the question and reach a conclusion about whether causation and remoteness are established.
Remember to consider whether any special rules apply, such as the thin-skull rule or the principle that the precise chain of events need not be foreseeable.
Key Points to Remember:
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Two requirements for damage: The harm must be (1) caused by the breach (factual causation), and (2) not too remote from the breach (legal causation).
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'But for' test: Apply this test for factual causation – would the harm have occurred but for the defendant's breach? If it would have happened anyway, causation fails (Barnett v Chelsea Hospital).
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Foreseeability is key to remoteness: The type or kind of damage must be reasonably foreseeable. If it was unforeseeable, it is too remote (The Wagon Mound).
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Flexible application of remoteness: The precise chain of events need not be foreseeable, only the general type of harm (Hughes v Lord Advocate).
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Thin-skull rule: Defendants take their victims as they find them. The extent of damage need not be foreseeable if the type of harm was foreseeable (Smith v Leech Brain).