General Defences to an action in Torts
Volenti non fit injuria, plaintiff the wrongdoer, inevitable accident, act of God, private defence, necessity and statutory authority
In one minute
A claimant may prove a wrongful act and legal damage and still lose. The defendant may plead a general defence. These are grounds that excuse or reduce liability in most torts.
The main ones are volenti non fit injuria (consent to risk), plaintiff the wrongdoer, inevitable accident, act of God, private defence, necessity and statutory authority. In exams, volenti non fit injuria is the most asked, usually as a long answer, so learn its two elements and its limits.
Exam focus
- Frequency: Frequently asked
- Usually asked as: Both (long answer and short answer)
Legal provision
- No Act lists the general defences. They come from decided cases.
- Sections 34 to 44, Bharatiya Nyaya Sanhita, 2023: the right of private defence of body and property, with its limits. Civil courts use the same principles of proportion.
- Statutory authority: an Act that authorises an act may take away the right to sue for harm that is an inevitable result of that act.
- Section 164, Motor Vehicles Act, 1988: fixed compensation is payable without proof of fault, so these defences do not reduce that sum.
Meaning and definition
A general defence is a ground that the defendant pleads and proves to escape liability, in whole or in part, even though the claimant has proved the elements of a tort. It differs from a special defence, such as justification in defamation, which belongs to one tort only.
The burden of proof is on the defendant. The defences fall in three groups.
- Those based on the claimant's own act: volenti non fit injuria, plaintiff the wrongdoer, and contributory negligence.
- Those based on events no one could control: inevitable accident and act of God.
- Those based on the defendant's justified act: private defence, necessity and statutory authority.
Detailed explanation
Step 1: volenti non fit injuria, consent to risk
Volenti non fit injuria means that no wrong is done to a person who consents. A claimant who freely accepts a known risk cannot sue when that risk happens. Two elements must be present.
- Knowledge. He must know the nature and extent of the risk. Mere knowledge is not enough: scienti non fit injuria is the rule that knowledge alone is no defence.
- Voluntary agreement. He must freely agree to run the risk, with no pressure or deceit. Consent obtained by fraud, force or an emergency the defendant created is not valid.
In Hall v. Brooklands Auto Racing Club (1933), two racing cars collided and one crashed into the crowd. The Court of Appeal held that a spectator at a motor race accepts the ordinary risk of a car leaving the track, so the club was not liable. In Smith v. Baker (1891), a worker who knew his work was dangerous did not lose his claim, because knowing of a danger is not the same as agreeing to bear it.
Example. Venu buys a ticket to watch a cricket match in Visakhapatnam. A six hits him in the stand. He cannot sue the club, as watching cricket carries an accepted risk of that kind. If instead the club had left a broken railing that caused him to fall, that risk was not one he agreed to.
Limits of the defence:
- It does not apply where a statute protects a class of persons, such as workers under safety laws.
- Rescuers are not volenti. A person who risks himself to save another from danger created by the defendant's wrong can still sue (Haynes v. Harwood, 1935).
- It is not easily applied to a passenger who accepts a lift. In motor cases, courts require clear proof that the passenger agreed to bear the risk of the driver's negligence.
Step 2: plaintiff the wrongdoer, ex turpi causa
The maxim ex turpi causa non oritur actio says that no action arises from a base cause. A claimant cannot recover for harm that flows directly from his own crime or serious wrongdoing. The defence is narrow. It applies only where the illegality is the foundation of the claim.
Example. Two burglars in Hyderabad break into a house. One is injured when his partner carelessly drops a heavy item on him. He cannot sue his partner for damages, because the claim arises directly from their joint crime.
Step 3: inevitable accident
An inevitable accident is an event that could not be avoided by the exercise of ordinary care, caution and skill. The defendant is not liable if the harm is of this kind. In Stanley v. Powell (1891), a shooting party member fired at a pheasant, the shot glanced off a tree and hit another man. The court held it an inevitable accident, as ordinary care had been taken.
Step 4: act of God
An act of God is a natural event of extraordinary force that no reasonable foresight could have guarded against. Normal rain, tides or winds do not qualify. In Nichols v. Marsland (1876), an unprecedented rainfall burst artificial lakes and swept away four bridges. The defendant was not liable.
Example. A water tank built to the correct standard in a Chennai suburb collapses in a cyclone that has no precedent in the area. Neighbours' houses are flooded. The owner may plead act of God.
Step 5: private defence
A person may use reasonable force to protect his body or property, or another person's, from imminent unlawful harm. The danger must be real and immediate and the force proportionate. Force that is excessive forfeits the defence. Setting a spring gun to injure trespassers is not proportionate. Sections 34 to 44 of the Bharatiya Nyaya Sanhita, 2023 state the limits for criminal law and guide civil courts.
Step 6: necessity
An act that is otherwise a tort is excused if it was done to prevent a greater harm and the harm caused was less. The danger may come from any source, such as fire or flood. In Cope v. Sharpe (1912), a gamekeeper burned heather on another's land to stop a fire reaching his employer's land. The court held that he acted reasonably in the circumstances, so he was not liable for trespass. The danger must reasonably have appeared real at the time.
Step 7: statutory authority
If an Act authorises an act, no action lies for the harm that is its inevitable result, although the act would otherwise be a tort. The protection covers only harm that cannot be avoided by reasonable care. Negligence in doing the authorised act is not excused. In Vaughan v. Taff Vale Railway (1860), sparks from a locomotive set fire to woods. The railway used all reasonable precautions and acted under statute, so it was not liable.
Step 8: contributory negligence
If the claimant's own carelessness helped cause the harm, damages are reduced in proportion to his share. It is a partial defence, and the note on negligence explains it in detail.
Don't confuse: inevitable accident, act of God and necessity
These three look alike because each excuses a harm. They differ in cause.
| Point | Inevitable accident | Act of God | Necessity |
|---|---|---|---|
| Cause | Any cause that ordinary care could not avoid | Extraordinary natural force, no human agency | Deliberate act of the defendant to prevent a greater harm |
| Defendant's act | Unintended | Not the cause | Intended and reasonable |
| Key test | Could ordinary care have avoided it? | Could any foresight have guarded against it? | Was the harm done less than the harm avoided? |
| Case | Stanley v. Powell | Nichols v. Marsland | Cope v. Sharpe |
Inside necessity. A neighbour in Rajahmundry breaks a fence and pulls a child from a burning hut. The fence is damaged, but the harm done is less than the harm avoided. He is not liable.
Just outside it (act of God). A cyclone of unheard-of force uproots a coconut tree, which falls on a neighbour's roof. The owner did nothing. This is act of God, with no act of the defendant to justify.
Common mistakes
- Writing that knowledge of a risk is enough for volenti. Voluntary agreement is also needed.
- Applying volenti to a rescuer. A rescuer is not treated as consenting.
- Treating every storm as an act of God. The event must be extraordinary.
- Confusing private defence and necessity. Private defence answers an unlawful attack. Necessity answers a danger from any source.
- Forgetting that statutory authority protects only harm that is the inevitable result of careful action.
Apply it
Problem
Meena, a spectator at a kabaddi match in Warangal, sits in the front row. A player is pushed off the mat and falls on her, breaking her arm. She sues the organisers. They plead volenti non fit injuria.
Issue. Did Meena consent to the risk, and was the risk one that the organisers were entitled to leave?
Rule. Volenti needs knowledge of the risk and voluntary agreement to bear it. A spectator accepts the ordinary risks of the game (Hall v. Brooklands Auto Racing Club), but not risks from the organiser's carelessness.
Application. Players falling into the front row is an ordinary risk of kabaddi, and Meena chose a front seat. If the organisers placed seats too close without a barrier, a risk arose from their carelessness.
Conclusion. If the fall was an ordinary risk of the game, the claim fails. If the seats were unsafe, she can succeed.
Leading case laws
- Hall v. Brooklands Auto Racing Club (1933)
Facts. Two racing cars collided at over 100 mph and one tore through a fence into the crowd, killing two spectators.
Principle. The Court of Appeal held that watching a race means accepting the ordinary risk that a car might leave the track.
Why it matters. The classic illustration of volenti non fit injuria.
- Rylands v. Fletcher (1868)
Facts. A reservoir burst through old mine shafts and flooded a neighbour's mine.
Principle. The owner was liable. Later cases such as Nichols v. Marsland recognised that an act of God can excuse an escape.
Why it matters. It marks where the act of God defence meets strict liability.
- Pushpabai Purshottam Udeshi v. Ranjit Ginning & Pressing Co. (P) Ltd. (1977)
Facts. A car left the road and hit a tree. No one saw how it happened, and the claimants sued for the death.
Principle. The Supreme Court used the wreckage as evidence of negligence. The accident was not shown to be inevitable.
Why it matters. It shows that a plea of inevitable accident needs proof.
How to write this answer in the exam
5-mark answer
- Define a general defence.
- State volenti non fit injuria with its two elements.
- Name the other defences in one line each.
- Cite Hall v. Brooklands Auto Racing Club.
10-mark answer
- Meaning and the three groups of defences.
- Volenti non fit injuria: elements, limits, Hall v. Brooklands and Smith v. Baker.
- Plaintiff the wrongdoer.
- Inevitable accident and act of God: Stanley v. Powell, Nichols v. Marsland.
- Private defence and necessity: Cope v. Sharpe.
- Statutory authority: Vaughan v. Taff Vale Railway.
- Contributory negligence. Conclusion.
Key points to remember
- General defences are pleaded and proved by the defendant.
- Volenti needs knowledge and voluntary agreement. It does not apply to rescuers or against protective statutes.
- Ex turpi causa bars a claim only where the illegality is its foundation.
- Inevitable accident: ordinary care could not avoid it. Act of God: an extraordinary natural event.
- Private defence: reasonable and proportionate force against an imminent unlawful harm.
- Necessity: harm done is less than harm avoided.
- Statutory authority: only the inevitable result of careful action is excused.
Quick self-test
1. What two elements make out volenti non fit injuria?
Knowledge of the nature and extent of the risk, and voluntary agreement to bear it.
2. How does an act of God differ from an inevitable accident?
An act of God is an extraordinary natural event with no human agency. An inevitable accident is any event that ordinary care could not avoid.
3. Is a rescuer treated as volenti?
No. A rescuer who risks himself to save someone from danger caused by the defendant's wrong can still sue.