Causation Flashcards
(89 cards)
After breach is established
Claimant must prove that this breach caused the damage.
Without it the claim will fail.
To determine if there is causation two points must be considered
1) Factual causation
2) Legal causation
Factual causation
Deals with establishing the link between breach and damage
Legal causation
Involves considering whether there are any grounds upon which the link should be regarded as having been broken
Factual Consideration Test
On the balance of probabilities, “but for” the defendant’s breach of duty, would the claimant have suffered their loss at that time and in that way?
Satisfaction of the “but for” test
The claimant would not have suffered their loss were it not for the defendant’s breach
“But for” test is not satisfied
Claimant would have suffered their loss even without the defendant’s breach
Barnett v Chelsea and Kensington Hosp 1969
FACTS
Hosp breached DoC as Dr fail to carry out proper examination.
Patient died of arsenic poisoning after drinking poisoned tea.
He would have died even if Dr has examined him.
Little to no chance antidote could have been administered to him
Barnett v Chelsea and Kensington Hosp 1969
HELD
Claim failed for causation
On the balance of probabilities
Still would have died.
The “but for” test must be proved
Must be proved on the balance of probabilities
With a more than 50% chance that the defendant’s breach caused the claimant’s loss.
Wilsher v Essex AHA 1988
FACTS
- Claimant was born prematurely and suffered a condition that caused him to go blind.
- could have been caused by any one of five equally probable different factor
- Only one was tortious.
- Evidence suggested that only one factor caused the loss.
Wilsher v Essex AHA 1988
HELD
Claimant had to prove that but for the defendant’s breach he would not have suffered blindness.
Had to establish more than 50%, could only establish 20%
Failed
Case used for factual causation in clincial negligence where the breach is to advise on risks
Chester v Afshar 2004
Chester v Afshar 2004
FACTS
- Failed to disclose very small risk of paralysis
- Claimant suffered paralysis in one leg
- Causation only proved if claimant could show they would not have had the operation having known the risk
Chester v Afshar 2004
HELD
“But for” test satisfied if claimant can proof on the balance of probabilities they would not have had the operation or deferred it to a later date
Claimant proved it
Bonnington Castings v Wardlow 1956
**FACTS*
- Sued employers in negligence for a respiratory disease
- Clear that the cause was exposure to dust, only part was due to breach of duty
- Tortious and non tortious dust worked together
- Medical evidence = evidence - could not satisfy the but for test
Bonnington Castings v Wardlow 1956
**HELD*
HoL deviated for the “but for” test.
Introduced the material contribution test.
This means a “more than negligible” contribution.
Claimant was successful
Material contribution test
Court meant a “more than negligible” contribution to the loss
Bailey V Ministry of Defence 2008
FACTS
- Choked on vomit due to weakness causing brain damage
- Weakness caused by natural progression of claimants condition
- Negligent lack of care by the defendant
Medics could not use the “but for” test
Bailey V Ministry of Defence 2008
HELD
Cllaim succeeded.
The claimant could prove that the negligent treatment (the breach) made a material (more than negligble) contribution to her brain damage.
Cases where medical science cannot establish the probability that “but for” an act of negligence the injury would not have happened…
But can establish that the contribution of the negligent cause was more than negligible, the “but for” test is modified
Sequential cumulative causes
Material contribution test applies
Simultaneous cumulative causes
Material Contribution Test Applies
Material Increase In Risk Case
McGhee v National Coal Board 1973