Duty of Care — Neighbour Principle, Foreseeability

A negligence action begins where a duty begins. Before the court asks whether the defendant fell short of the standard of care, it has to be satisfied that the defendant owed the plaintiff a legal duty to take care at all. The doctrinal home of that threshold question is the neighbour principle, traced from Heaven v. Pender, (1883) 11 QBD 503 through Lord Atkin's celebrated formulation in Donoghue v. Stevenson, [1932] AC 562, and refined in modern times by the two-stage test in Anns v. Merton London Borough Council, [1978] AC 728, and the three-stage test in Caparo Industries plc v. Dickman, [1990] 2 AC 605. The Indian Supreme Court applied the same architecture in Municipal Corporation of Delhi v. Subhagwanti, AIR 1966 SC 1750 and Jay Laxmi Salt Works v. State of Gujarat, (1994) 4 SCC 1.

This chapter explains how each of those tests works, what reasonable foreseeability really requires, and where the Indian courts have drawn the line between an actionable wrong and a misfortune. It sits in the larger Law of Torts notes, between the chapter on the essentials of the tort of negligence and the chapter on breach of duty and causation. The duty enquiry is the gateway; the standard-of-care and the causation enquiries lie beyond it.

From Heaven v. Pender to Donoghue v. Stevenson

The formative authority is Heaven v. Pender, where Brett, M.R. proposed a general formula: actionable negligence consists in "the neglect of the use of ordinary care or skill towards a person to whom the defendant owes the duty of observing ordinary care and skill, by which neglect the plaintiff has suffered injury, to person or property." The formula did the work of organising scattered duty-categories — the duty of carriers, surgeons, occupiers, manufacturers — but it left the fundamental criterion of duty implicit.

The criterion was made explicit by Lord Atkin in Donoghue v. Stevenson, [1932] AC 562. A retailer sold a bottle of ginger beer to A, who poured part of it into a tumbler for the appellant. When the remainder was poured out, the decomposed body of a snail floated out with the drink. The appellant alleged that she suffered shock and gastro-enteritis as a consequence. The bottle was of dark opaque glass and closed with a metal cap, so that the contents could not be ascertained by inspection. She sued the manufacturer in tort, with no contractual privity to support her claim. The House of Lords held the manufacturer liable. Lord Atkin's reasoning supplied the modern law of negligence with its general principle:

Two doctrinal moves flow from this. First, the duty to take care arises out of relations that the courts cannot enumerate exhaustively, and Lord Macmillan's famous remark — "the categories of negligence are never closed" — captures the open-ended texture of the inquiry. Second, the privity-of-contract fallacy, on which Winterbottom v. Wright, (1842) 10 M & W 109 had earlier denied a remedy to a non-contracting consumer, was disposed of: an action in tort exists independently of contract, and a manufacturer who puts an article into circulation in a sealed form for the consumer's use owes the consumer a duty of care directly.

Reasonable foreseeability of injury

The neighbour formula identifies the duty by reference to reasonable foreseeability. The defendant owes a duty to the plaintiff if, at the time of the act or omission, the defendant could reasonably foresee injury to the plaintiff. The duty is owed to those to whom injury may reasonably and probably be anticipated if the duty is not observed. The standard is impersonal — it eliminates the personal equation and is independent of the idiosyncrasies of the particular defendant.

Lord Macmillan in Glasgow Corporation v. Muir, [1943] AC 448 explained the standard in often-quoted language: the reasonable man is presumed to be free both from over-apprehension and from over-confidence; some persons are unduly timorous and imagine every path beset with lions, others are nonchalant and disregard even the most obvious dangers, and the law sets its face against both. There is, however, a subjective remainder — it is left to the judge to decide what, in the circumstances of the particular case, the reasonable man would have had in contemplation. "What to one Judge may seem far-fetched may seem to another both natural and probable."

Three propositions flow from the case-law on foreseeability:

1. Foreseeable injury, not bare possibility. Reasonable foreseeability does not include any idea of likelihood at all — the duty is to guard against probabilities, not against fantastic possibilities. In Fardon v. Harcourt-Rivington, (1932) 146 LT 391, the defendant parked his car by the road-side and left a dog inside. The dog jumped about and smashed a glass panel. A splinter from the glass injured the plaintiff while he was walking past. The accident, being very unlikely, could not have entered the contemplation of a reasonable man, and there was no negligence in not taking a precaution against it. Lord Dunedin: "People must guard against reasonable probabilities but they are not bound to guard against fantastic possibilities."
2. The chance must be substantial. In Bolton v. Stone, [1951] AC 850, a batsman hit a ball that flew over a seven-foot fence and seventeen feet above the cricket pitch and injured the plaintiff on an adjoining highway about 100 yards away. The ground had been used for ninety years and during the last thirty years a ball had been hit into the highway only six times. The House of Lords held that there was no liability — "the test to be applied here is whether the risk of damage to a person on the road was so small that a reasonable man in the position of the appellants...would have thought it right to refrain from taking steps to prevent the danger."
3. Latent defects. If the harm is not foreseeable because the defect is latent and could not have been discovered by a reasonable inspection and could not have been discovered by a reasonable inspection, no duty is breached. In Cates v. Mongini Bros., ILR (1917) 41 Bom 56, a ceiling fan fell on a restaurant visitor due to a latent defect in the metal of the suspension rod. The defect could not have been discovered by a reasonable man. Since the harm was not foreseeable, the proprietors were not negligent. The same reasoning explains why a wholly unanticipated event is treated as an inevitable accident rather than negligence.

The Anns two-stage test

For two generations after Donoghue v. Stevenson, the courts applied the neighbour principle by extension to fresh relations. The most ambitious attempt to recast it was Lord Wilberforce's two-stage test in Anns v. Merton London Borough Council, [1978] AC 728. Lord Wilberforce reduced the duty enquiry to two questions:

1. Is there a sufficient relationship of proximity or neighbourhood between the alleged wrongdoer and the person who has suffered damage, such that, in the reasonable contemplation of the former, carelessness on his part may be likely to cause damage to the latter? If yes, a prima facie duty of care arises.
2. Are there any considerations which ought to negative, reduce or limit the scope of the duty, the class of person to whom it is owed, or the damage to which a breach of it may give rise?

The Anns test treats foreseeability and proximity as the foundation, and policy as the residual filter. It produced an expansive period in which novel duties — to a local authority issuing planning approvals, to a public authority maintaining a register, to a bank giving an unsought reference — were imposed in successive cases.

The Caparo three-stage test

The expansion was checked by Caparo Industries plc v. Dickman, [1990] 2 AC 605, where the House of Lords retreated from the Anns formula and substituted a three-stage test. The plaintiff company had relied on the audited accounts prepared by the defendant auditors of a target company, taken over the target, and then complained that the accounts had been negligently prepared. The House of Lords held that the auditors owed no duty to a takeover bidder. Lord Bridge identified three ingredients of the duty enquiry:

1. Reasonable foreseeability. The damage that occurred must have been a reasonably foreseeable consequence of the defendant's conduct.
2. Proximity. There must be a relationship of proximity between the parties — "a relationship characterised by the law as one of 'proximity' or 'neighbourhood'".
3. Fair, just and reasonable. It must be fair, just and reasonable to impose a duty of the scope contended for.

The third element is the policy filter that Anns placed at stage two. It allows the courts to consider whether the imposition of a duty would, for example, expose a defendant to liability of the kind seen in joint and several tortfeasor cases — "in an indeterminate amount for an indeterminate time to an indeterminate class" — Cardozo, J.'s warning in Ultramares Corporation v. Touche, 174 NE 441 (1931), reproduced in Caparo. The contemporary English law of duty is therefore a three-step incremental approach in which novel categories are recognised cautiously, by analogy with established categories, and only where all three elements are satisfied.

Duty must be owed to the plaintiff

The duty must be owed to this plaintiff, not merely to plaintiffs at large. The classic illustration is Bourhill v. Young, [1943] AC 92, where a pregnant fish-wife alighting from a tram heard the noise of a motor-cycle accident some distance away. She did not see the accident; later she saw blood on the road. She suffered nervous shock and a still-birth. The motor-cyclist was negligent vis-a-vis the other road-user with whom he collided, but the House of Lords held that he owed no duty to a person in the position of the plaintiff because injury to her was not reasonably foreseeable. The case is the answer to the popular impression that Donoghue v. Stevenson made every wrongdoer liable to the world at large.

The same point is made in Booker v. Wenborn, [1962] 1 WLR 162. The defendant boarded a train which had just started moving but kept the door of the carriage open. The door, opening outwards, created a danger to those standing on the platform. The plaintiff, a porter standing on the edge of the platform, was hit by the door. The court held that a person boarding a moving train owed a duty of care to a person standing near it on the platform — the plaintiff was within the zone of danger, the injury was reasonably foreseeable, and the duty was therefore owed to him. For the analytic frame in which duty sits alongside the other ingredients of the wrong, see the chapter on the mental elements in tort.

Indian application — public-authority cases

The Indian courts adopted the neighbour principle without controversy. The clearest early application is Municipal Corporation of Delhi v. Subhagwanti, AIR 1966 SC 1750. A clock tower situated in the heart of Chandni Chowk, Delhi, collapsed and caused the death of a number of persons. The structure was eighty years old; its normal life, given the kind of mortar used, was forty to forty-five years. The Municipal Corporation, which had control of the tower, had failed to get periodical inspections done. The Supreme Court held that the Corporation owed a duty of care to those passing by the tower; the failure to inspect and to repair was a breach of that duty; and the Corporation was liable for the consequences of the collapse. The case is the Indian textbook authority for the proposition that a public authority in control of a structure on a public thoroughfare owes a duty of care to road-users.

The same Court applied the principle to a dead tree in Municipal Corporation of Delhi v. Sushila Devi, AIR 1999 SC 1929. A passer-by died because of the fall of a dried-out branch of a tree standing on the road. The Horticulture Department of the Corporation should have carried out periodical inspection of the trees and removed those that were dried, dead and dangerous. Subhagwanti was followed; liability was imposed.

For a more modern formulation of the duty owed by a state instrumentality engaged in public works, see Jay Laxmi Salt Works (P) Ltd. v. State of Gujarat, (1994) 4 SCC 1, where the Supreme Court applied the neighbour principle to a state-built bandh that breached and inundated the appellant's salt works. The Court held that an authority planning and executing a public-utility work owes a duty of care to the owners of property in the zone affected by the work; the existence of statutory authority does not displace the duty to plan and execute with reasonable care.

Indian application — operational cases

The duty enquiry has been applied across a wide range of operational settings — road-user, transport, electricity supply, dangerous premises and dangerous chattels among them. A cluster of cases on transport may be instanced. In Ishwar Devi v. Union of India, AIR 1969 Del 183, the conductor of a Delhi Transport Undertaking bus rang the starting bell while the deceased was still on the foot-board, and the driver tried to overtake another bus so closely that the deceased was squeezed between the two and died. Both the conductor and the driver owed a duty of care to a person boarding the bus and breached it. In Rural Transport Service v. Bezlum Bibi, AIR 1980 Cal 165, the conductor of an overcrowded bus invited passengers to travel on the roof; the driver swerved to overtake a cart and a passenger on the roof was struck by an overhanging branch. There was negligence on the part of both the driver and the conductor — the duty extended both to those inside the bus and to those whom the conductor had invited to the roof.

The duty owed by an electricity-supply authority has been applied repeatedly. In S. Dhanaveni v. State of Tamil Nadu, AIR 1997 Mad 257, a person fell into a pit filled with rain water and caught hold of a nearby electric pole to avert a fall; due to leakage of electricity in the pole, he was electrocuted. The respondent maintaining the pole owed a duty of care to road-users; failure to maintain the pole insulation was a breach of that duty. In T.G. Thayumanavar v. Secretary, P.W.D., AIR 2002 Mad 386, an overhead electric wire snapped and fell on a cyclist going on the road, who died from electrocution. The duty to keep the wire properly maintained was owed to all who passed under it.

The same logic explains the cases on dangerous premises and dangerous chattels — see the chapter on strict liability for the parallel rule that operates without proof of fault. Where the article concerns a hazard on a public thoroughfare, see also the chapter on public and private nuisance for the cognate doctrine of public nuisance.

Special-relationship duties

Beyond the general neighbour principle, the courts have recognised duties grounded in particular relationships. The carrier owes the passenger a duty of safe carriage; the occupier owes the visitor a duty appropriate to the visitor's status; the manufacturer owes the consumer the Donoghue v. Stevenson duty; the employer owes the employee a duty to provide a safe system of work; the school authority owes the pupil a duty to supervise. Each of these is now an established category in the modern law and may be invoked without re-arguing the neighbour principle from first principles.

The professional-negligence duty is treated separately in the chapter on medical and professional negligence, where the standard-of-care issues acquire their own apparatus. The negligent-misstatement duty, recognised in Hedley Byrne & Co. Ltd. v. Heller & Partners Ltd., [1964] AC 465, is treated in the chapter on negligent misstatement.

Reasonable foreseeability vs proximity

It is sometimes said that the modern Caparo formulation merely repeats Donoghue v. Stevenson in three steps. The objection has force, but the three-step formulation does useful analytic work. Foreseeability is concerned with the contemplated consequence of the act; proximity is concerned with the legal relation between the parties. The two are independent in principle. A driver can reasonably foresee that careless driving may injure a tram conductor down the road, but the conductor would not necessarily fall within the zone of proximity if the harm is too distant in space and time. Bourhill v. Young is itself an instance — the plaintiff was reasonably foreseeable as a member of the travelling public, but she was not in proximity to the motor-cyclist at the moment of the collision.

The third Caparo limb — fair, just and reasonable — admits considerations of policy such as the indeterminate-liability concern in pure-economic-loss cases, the floodgates concern in nervous-shock cases, and the immunity concern in cases against public authorities exercising statutory discretion. Indian courts use these labels less doctrinally but reach the same conclusions through the discipline of their own reasoning.

Pure economic loss and the limits of the duty

Where the loss is purely economic — unaccompanied by physical injury or property damage — the duty enquiry tightens. The classical exclusionary rule is in Cattle v. Stockton Waterworks Co., (1875) LR 10 QB 453: a man whose negligent excavation interrupts the supply of water to a contractor's premises is not liable for the contractor's economic loss. The retreat of the Anns expansion in Caparo was directly responsive to the special hazards of pure-economic-loss recovery. Indian courts have generally maintained the exclusionary rule, with departures confined to cases of negligent misstatement on the Hedley Byrne model and cases where the economic loss is consequential on physical injury or property damage.

Exam angle and common pitfalls

Three traps recur in objective papers. First, candidates conflate Donoghue v. Stevenson (the neighbour principle, which establishes a general duty of care) with Hedley Byrne (which extends the duty to careless statements causing economic loss): the two cases sit at different ends of the duty spectrum. Second, candidates miss that the Anns two-stage formulation has been departed from — the present test is the three-stage Caparo test of foreseeability, proximity, and fair-just-reasonable. Third, candidates state the neighbour principle without remembering that the duty must be owed to this plaintiff: Bourhill v. Young is the corrective. The chapter that follows on the standard of care and the but-for test explains what happens once the duty is established; the chapter on the essentials of tort places the duty enquiry in its larger doctrinal frame.

Frequently asked questions

Who is a 'neighbour' under the Donoghue v. Stevenson test?

Lord Atkin defined the neighbour as "persons who are so closely and directly affected by my act that I ought reasonably to have them in contemplation as being so affected when I am directing my mind to the acts or omissions which are called in question." The test is one of reasonable foreseeability filtered through proximity. The plaintiff need not have any contractual or other antecedent relation with the defendant; what matters is that injury to a person in the plaintiff's position must be a reasonably foreseeable consequence of want of care on the defendant's part.

What is the difference between the Anns two-stage test and the Caparo three-stage test?

The Anns test in Anns v. Merton London Borough Council, [1978] AC 728 reduced duty to two questions — proximity-foreseeability, then policy considerations that might negative the prima facie duty. The Caparo test in Caparo Industries plc v. Dickman, [1990] 2 AC 605 broke the enquiry into three independent ingredients — reasonable foreseeability, proximity, and fair-just-reasonable. The third Caparo limb is a freestanding policy filter, not a residual subtraction. Caparo is incremental and category-by-category; Anns was expansive and general. The Caparo formulation is the modern law.

Does the duty of care extend to every conceivable plaintiff?

No. The duty is owed only to those whom the defendant ought reasonably to have had in contemplation as being affected by the act or omission. Bourhill v. Young, [1943] AC 92 is the corrective: a motor-cyclist riding negligently owed a duty to other road-users with whom he might collide, but he owed no duty to a fish-wife who heard the crash from some distance away and suffered nervous shock. The plaintiff must lie within the foreseeable zone of injury; mere foreseeability of harm to someone is not enough.

What did the Supreme Court hold in MCD v. Subhagwanti?

In Municipal Corporation of Delhi v. Subhagwanti, AIR 1966 SC 1750, the Court held that a public authority in control of a structure on a public thoroughfare owes a duty of care to road-users. The Chandni Chowk clock tower had been allowed to stand for eighty years against a normal life of forty to forty-five years; the Corporation's failure to inspect and repair was the breach; the deaths caused by the collapse were the damage. The case is the Indian textbook authority for the duty owed by a public authority in control of a public structure.

Are the categories of negligence closed?

No. Lord Macmillan's celebrated remark in Donoghue v. Stevenson — "the categories of negligence are never closed" — captures the open texture of the duty enquiry. The courts recognise novel duties when the proximity, foreseeability and fair-just-reasonable elements are made out, even where there is no antecedent authority. The growth has been incremental in the modern phase: the courts proceed by analogy to established categories and resist sweeping general extensions of the kind exemplified by the Anns era.

Is reasonable foreseeability the same as bare possibility?

No. The duty is to guard against probabilities, not against fantastic possibilities. Fardon v. Harcourt-Rivington, (1932) 146 LT 391 holds that a possibility "which would never occur to the mind of a reasonable man" is not a foreseeable risk; Bolton v. Stone, [1951] AC 850 holds that the chance must be substantial — a one-in-many-decades occurrence is too remote to give rise to a duty to take precautions. The threshold is one of reasonable likelihood judged from the standpoint of the reasonable man in the defendant's position.