Explain 'necessity' as a defence for the liability of tort and also mention the classes of necessity.
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Core Legal Answer & Context: 'Necessity' is a common law defense in tort law that allows a defendant to escape liability for an act that would otherwise be tortious, on the grounds that the act was necessary to prevent a greater harm. The defense is based on the principle that the law permits an individual to infringe upon the rights of another if such infringement is essential to avert a more significant danger, either to themselves, others, or property. The act must be reasonable, proportionate to the threat, and the harm prevented must be greater than the harm caused. It is an exception to the general rule that one is liable for their wrongful acts, acknowledging that in certain exigent circumstances, a lesser evil may be chosen to prevent a greater one. However, the defense is not absolute and is subject to strict scrutiny regarding the imminence of the danger and the reasonableness of the defendant's actions.
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Relevant Statutes and Sections:
- Necessity is primarily a common law defense and is not codified in specific statutes in India. However, its principles are recognized and applied by courts.
- Analogous principles can be found in criminal law under the 'General Exceptions' of the Indian Penal Code, such as:
- Section 81 (Act likely to cause harm, but done without criminal intent, and to prevent other harm): While this is a criminal law provision, it embodies the same underlying principle of choosing a lesser evil to prevent a greater one, which is central to the defense of necessity in torts.
- Important Landmark Cases:
- Cope v. Sharpe (No. 2) (1912): This English case is a classic example of private necessity. A gamekeeper set fire to heather on a moor to create a firebreak to prevent a larger fire from spreading to his master's property. The court held that his actions were justified by necessity, as they were reasonably necessary to protect property from imminent danger, and the harm caused (burning heather) was less than the harm prevented (destruction of the entire moor).
- Southwark London Borough Council v. Williams (1971): This case involved public necessity. Homeless individuals squatted in empty council houses, claiming necessity due to their desperate situation. The court rejected the defense, stating that while their plight was sympathetic, allowing necessity as a defense in such circumstances would open the floodgates and undermine the rule of law. This case highlights the limitations of the defense, particularly in public necessity, where the harm prevented must be of a public nature and the action must be for the public good.
- Clear Conclusion: The defense of necessity in tort law provides a crucial justification for otherwise tortious acts when undertaken to avert a greater, imminent harm. It is categorized into two main classes: private necessity (where the act is for the protection of the defendant's own person or property, or that of a third party) and public necessity (where the act is for the protection of the community or a significant portion of it). While it offers a shield against liability, the defense is narrowly construed, requiring the defendant to demonstrate that their actions were genuinely necessary, reasonable, and proportionate to the threat, and that the harm prevented was indeed greater than the harm caused. This balance ensures that while individuals can act decisively in emergencies, their actions remain within the bounds of legal justification.