Contributory negligence is where an injured claimant is held to have been partly to blame for their accident and injuries. It is a common pleading by a defendant in road traffic collisions, accidents at work and in claims against the Crown.
The burden of proof is on the defendant throughout. In English law, the defendant must:
1. Plead and Prove the Claimant’s Lack of Reasonable Care
- The defendant must allege, plead, and prove that the claimant failed to take reasonable care for their own safety, and that this failure contributed to the occurrence of the injury or loss.
2. Establish Causation
- The defendant must show that the claimant’s lack of reasonable care was causative of the damage suffered. In other words, the claimant’s own negligence must have materially contributed to the harm.
- Can the Crown sue the Crown?
3. Just and Equitable Apportionment
- If contributory negligence is established, the court will then determine to what extent it is just and equitable to reduce the claimant’s damages, having regard to the claimant’s share in the responsibility for the damage (see s.1(1) Law Reform (Contributory Negligence) Act 1945).
Key Principles
- There is no special rule for contributory negligence in personal injury claims; the same principles apply as in other negligence actions.
- The court will conduct a comparative exercise between the blameworthiness of the parties and the causal potency of their respective acts or omissions.
- The reduction in damages is discretionary and based on what the court considers just and equitable in the circumstances.
Practical Steps for Defendants
- The defence must be specifically pleaded in the defence statement.
- Evidence must be adduced to show both the claimant’s fault and its causal connection to the injury.
- The defendant should be prepared to address both the factual and legal basis for the allegation, and to propose an appropriate percentage reduction in damages.
Case Law and Guidance
- The leading statutory provision is the Law Reform (Contributory Negligence) Act 1945
- The courts have considered contributory negligence in a range of contexts, including road traffic accidents (e.g., Froom v Butcher [1976] QB 286, where not wearing a seatbelt led to a reduction in damages).
- The Pre-Action Protocol for Personal Injury Claims requires that any allegation of contributory negligence be raised at an early stage.
(C) Grant Evatt
Solicitor and Managing Director
Alma Law
09.06.25
