TORT 116 Strict Liability and Negligence — Law of Torts Notes for Judiciary

Strict Liability and Negligence: Whether the Plaintiff Must Prove That Anybody Was at Fault

Negligence asks whether the defendant fell below the standard of the reasonable man. Strict liability asks only whether the activity he carried on was of the kind for which the law makes him answer. The first is a judgment about conduct; the second is an allocation of risk. The practical consequence is that reasonable care is a complete answer to a claim in negligence and no answer at all to a claim in strict liability, so a defendant who did everything right may be liable under one and not the other.

1. The Comparison

	Negligence	Strict liability
The basis of liability	Fault: a failure to take reasonable care	The activity itself, regardless of the care taken
What the plaintiff must prove	A duty of care, a breach, causation and damage	A dangerous thing, a non natural use, an escape and damage
The standard applied	That of the reasonable man in the circumstances	None. No standard of conduct is applied
Reasonable care as a defence	A complete answer	No answer whatever
What is in issue at the trial	The defendant's conduct: what he did, should have done, and knew	Causation, the character of the use, and the exceptions
Burden of proof	On the plaintiff, eased in a proper case by res ipsa loquitur	Lighter, since nothing about the defendant's care is in issue
Foreseeability	Central, both to the duty and to remoteness	Relevant to the type of damage, but not to the existence of liability
Defences	Contributory negligence, volenti, inevitable accident, act of God, statutory authority and the rest	The seven Rylands exceptions only, and none at all where the liability is absolute
The function of the rule	To set a standard of conduct and to sanction departures from it	To place a risk on the person who created it and profits from it

2. Where Strict Liability Operates

The rule in Rylands v. Fletcher, for the escape of a dangerous thing from a non natural use of land: TORT 055.
Absolute liability under M.C. Mehta, for harm from a hazardous or inherently dangerous activity, with no escape required and no exceptions: TORT 056 and TORT 115.
Liability for animals. The scienter action for an animal of a dangerous species, or one of a harmless species whose vicious propensity was known; and cattle trespass.
Fire, at common law, for a fire that began on the occupier's land and spread.
Vicarious liability, which is strict in the sense that the employer is liable without any fault of his own, though it requires fault in the servant: TORT 047.
Product liability under the Consumer Protection Act, 2019, where a manufacturer is liable for a defective product notwithstanding that he was not negligent: TORT 079.
The statutory no fault regimes: section 164 of the Motor Vehicles Act, 1988; the Public Liability Insurance Act, 1991; the Employees' Compensation Act, 1923.

3. What Each Rule Is For

	Negligence	Strict liability
The question it answers	Should this defendant have behaved differently	Who should bear this loss
Its moral basis	Blame. The defendant is liable because he was careless	Not blame. The defendant is liable because he created the risk
Its economic function	To induce actors to take cost justified precautions	To make the enterprise bear the accident costs of its activity, which it can price, spread and insure
Its effect on the level of activity	Little. A defendant who takes due care may carry on as much of the activity as he likes	Considerable. The cost rises with the volume of the activity, so the activity itself is deterred
Who is better placed to insure	Either party	The defendant, who knows the risk and carries on the activity repeatedly
What happens to the unexplained accident	The loss lies on the plaintiff, unless res ipsa loquitur assists him	The loss falls on the defendant, the cause of the escape being immaterial

4. The Middle Ground

The two are not sealed compartments, and several doctrines sit between them.
Res ipsa loquitur leaves the liability founded on fault but shifts the burden, so that the defendant who cannot explain the accident loses. In practice it produces an outcome close to strict liability while remaining, in theory, an application of negligence: TORT 030.
Non delegable duties make the defendant answerable for a contractor's carelessness, so that he is liable without personal fault though the liability still depends on somebody's fault: TORT 049.
Breach of statutory duty may be strict or fault based according to the words of the statute, and where the duty is absolute, as with the fencing of dangerous machinery, proof that it was impracticable to comply is no answer: TORT 078.
The higher standards applied to dangerous activities in negligence itself mean that the greater the risk, the greater the precautions required, and at the extreme the standard approaches a guarantee.
The statutory no fault schemes remove fault but cap the compensation, and leave the claimant to a fault based claim for the balance.

5. How a Pleading Uses Both

In an escape case they are pleaded together and in the alternative, and the pleading of both is not an inconsistency but an ordinary precaution.
The strict claim relieves the plaintiff of proving fault, which in an industrial or utility accident he is frequently unable to do, the material facts being inside the defendant's premises and the technology beyond him.
The negligence claim survives if an exception is made out, since an exception to Rylands is no answer to a want of care. A defendant who escapes under the act of a stranger exception is still liable if he failed to guard against interference he ought to have anticipated, which is exactly how M.P. Electricity Board v. Shail Kumari was decided: TORT 107.
The converse also holds. A defendant who took every precaution is liable under Rylands and not in negligence, so the strict claim does the work in the case of the careful defendant and the negligence claim does the work in the case of the exception.
Nuisance is ordinarily pleaded with both, since an escape that damages land is usually also an unreasonable interference with its enjoyment.
And where the activity is hazardous, absolute liability is pleaded first, with Rylands and negligence behind it, because the characterisation of the activity is a question on which the court may differ from the plaintiff.

6. Two Illustrations of the Difference

The facts	The result under each rule
A reservoir built by a competent engineer bursts because of disused shafts nobody could have discovered	Negligence: the defendant fails, having taken all reasonable care. Strict liability: the defendant succeeds, the thing having escaped from a non natural use. This is Rylands itself
A live wire falls on a public road because a third party tapped the line, and a passer by is electrocuted	Negligence: turns on whether the Board should have anticipated the tapping and guarded against it. Strict liability: the Board answers for the escape of the energy, and after Shail Kumari the stranger exception does not assist it

⚠ Why the law did not simply choose one rule or the other

A system of pure negligence would leave the victims of the most dangerous activities without a remedy, because those are precisely the activities whose accidents are hardest to explain: the evidence is inside the plant, the expertise belongs to the defendant, and the cause may never be established at all. A system of pure strict liability would be worse in a different way. It would make every actor an insurer of every consequence of what he does, remove any reason to distinguish careful conduct from careless, and impose on ordinary life a burden that only the most profitable activities could carry. The law has therefore kept negligence as the general principle, because most accidents are caused by carelessness and the standard of reasonable care is the mechanism by which the law tells people how to behave, and has carved out strict liability for a narrow class of activities marked by three features: the risk is created deliberately by the defendant for his own purposes, it is beyond the capacity of those exposed to it to assess or avoid, and its realisation is catastrophic. Where those three features are present, the ordinary contest about carelessness is not merely difficult but beside the point, because the question the community is really asking is not whether the defendant was careful enough but whether he should bear the cost of what his activity does.

7. The Position Stated Shortly

1. Negligence rests on fault and asks whether the defendant fell below the standard of the reasonable man.

2. Strict liability rests on the character of the activity and asks only whether the defendant carried it on.

3. Reasonable care is a complete answer in negligence and no answer at all in strict liability.

4. In negligence the plaintiff proves duty, breach, causation and damage; under Rylands he proves a dangerous thing, a non natural use, an escape and damage.

5. Negligence sets a standard of conduct; strict liability allocates a risk to the person who created it and profits from it.

6. Strict liability operates under Rylands, under M.C. Mehta, for animals and fire, in vicarious liability, in product liability and in the statutory no fault schemes.

7. Res ipsa loquitur, non delegable duties, absolute statutory duties and the raised standard for dangerous activities all occupy the ground between the two.

8. In an escape case both are pleaded in the alternative, together with nuisance, and pleading both is a precaution and not an inconsistency.

9. The strict claim relieves the plaintiff of proving fault; the negligence claim survives if an exception to Rylands is made out.

10. The law keeps both because pure negligence would leave the victims of hazardous activity without a remedy, and pure strict liability would make every actor an insurer of everything he does.