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Liability of the Manufacturer in Negligence

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August 02, 2026
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This answer will analyse whether the manufacturer of the fruit juice may be liable in negligence for the illness Maria suffered. For Maria to make a successful claim, she must prove three elements. First, that the manufacturer owed her a duty of care. Second, that the manufacturer breached that duty. Third, that the breach of duty caused her to suffer harm. Each of these elements will be considered in turn.

Duty of Care

The first element Maria must establish is that a duty of care was owed to her by the manufacturer. The law on this area was established in the case of *Donoghue v Stevenson* (1932). In this case, Mrs Donoghue’s friend bought her a bottle of ginger beer. The bottle was made of dark, opaque glass. After drinking some of it, Mrs Donoghue poured out the rest and a decomposed snail fell out. She suffered from shock and gastroenteritis. The House of Lords held that the manufacturer was liable. It was decided that a manufacturer owes a duty of care to the final consumer of their products.

Lord Atkin in this case developed the ‘neighbour principle’. He stated that you owe a duty to your ‘neighbours’. Neighbours are persons who are so closely and directly affected by your act that you ought reasonably to have them in mind when acting (Donoghue v Stevenson, 1932). In the context of manufacturing, the final consumer is considered a neighbour. The manufacturer should be able to foresee that a consumer might be injured if the product is not made carefully. A key factor in *Donoghue* was that the opaque bottle and sealed cap meant there was no reasonable opportunity for inspection by anyone before it reached the consumer.

Applying this to Maria’s situation, the facts are very similar. The manufacturer produces a drink intended for consumption. Maria is the final consumer of that drink. The manufacturer should reasonably foresee that if the drink is contaminated, the consumer could become ill. The bottle was dark, which means Maria could not see the insect inside before she drank from it. This prevented any intermediate examination. Therefore, following the principle in *Donoghue v Stevenson* (1932), it is clear that the manufacturer owed Maria a duty of care. This principle that manufacturers are responsible for hidden defects was confirmed in other cases, such as *Grant v Australian Knitting Mills* (1936).

Breach of Duty

The second element Maria must show is that the manufacturer breached its duty of care. A breach occurs if the defendant’s actions fall below the standard of care expected of them. The standard is that of the ‘reasonable person’. In this case, it would be the standard of a reasonable fruit juice manufacturer. A reasonable manufacturer would be expected to have systems in place to ensure their products are safe for consumption. This would include processes to prevent foreign objects, such as insects, from contaminating the drinks during bottling.

The presence of a dead insect in a sealed bottle is strong evidence that the manufacturer’s process was faulty. It suggests that they failed to take reasonable care in the production of the juice. It is not something that would happen if the manufacturer had met the required standard. Therefore, it is highly likely that a court would find that the manufacturer breached its duty of care to Maria.

Causation and Damage

The final element is causation. Maria must prove that the manufacturer’s breach of duty caused her loss. This has two parts: factual causation and legal causation.

Factual causation uses the ‘but for’ test. The question is: ‘but for’ the manufacturer’s negligence, would Maria have suffered the illness? The answer is no. If the manufacturer had used reasonable care, there would not have been an insect in the juice, and Maria would not have become ill after drinking it. Therefore, factual causation is established.

Legal causation concerns remoteness of damage. The harm suffered must be a reasonably foreseeable consequence of the defendant’s breach. It is reasonably foreseeable that a person who consumes a drink containing a dead insect might suffer from a resulting illness. The type of harm Maria suffered is not too remote. The damage she can claim for is her personal injury (the illness) and any financial losses that resulted from it, such as the cost of her medical treatment.

Conclusion

In conclusion, it is very likely that Maria will succeed in a claim of negligence against the manufacturer. All three elements required for negligence appear to be present. First, the manufacturer owed Maria a duty of care as the ultimate consumer of its product. Second, the manufacturer breached that duty by allowing the drink to be contaminated with an insect. Third, this breach directly caused Maria’s illness and need for medical treatment, which was a foreseeable type of harm. As a result, Maria should be able to claim compensation from the manufacturer.

References

  • Donoghue v Stevenson [1932] AC 562.
  • Grant v Australian Knitting Mills [1936] AC 85.

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