Penal damages

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Contract Law
Part of the common law series
Contract
Contract formation
Offer and acceptance  · Mailbox rule
Mirror image rule  · Invitation to treat
Firm offer  · Consideration
Defenses against formation
Lack of capacity to contract
Duress  · Undue influence
Illusory promise  · Statute of frauds
Non est factum
Contract interpretation
Parol evidence rule
Contract of adhesion
Integration clause
Contra proferentem
Excuses for non-performance
Mistake  · Misrepresentation
Frustration of purpose  · Impossibility
Impracticability  · Illegality
Unclean hands  · Unconscionability
Accord and satisfaction
Rights of third parties
Privity of contract
Assignment  · Delegation
Novation  · Third party beneficiary
Breach of contract
Anticipatory repudiation  · Cover
Exclusion clause  · Efficient breach
Fundamental breach
Remedies
Specific performance
Liquidated damages
Penal damages  · Rescission
Quasi-contractual obligations
Promissory estoppel
Quantum meruit
Subsets: Conflict of law Commercial law
Other areas of the common law
Tort law  · Property law
Wills and trusts
Criminal law  · Evidence

Penal damages are best seen as quantitatively excessive liquidated damages and are invalid under the common law. While liquidated damages are a priori calculations of expectation loss under the contract, penal damages go further and seek to penalise a party in some way for breach of a clause above and beyond the loss suffered by the innocent party as a result of this breach. Many clauses which are found to be penal are expressed as liquidated damages clauses but are seen by courts as excessive and thus invalid.

The judicial approach to penal damages is conceptually important as it is one of the few examples of judicial paternalism in contract law. Even if two parties genuinely and without coercion wish to consent to a contract which includes a penal clause, they are unable to. So, for example, a person wishing to give up smoking cannot contract with a third party to be fined $100 each time they smoke as this figure does not represent the expectation loss of the contract.

[edit] As distinguished from other types of damages

Penal damages are to be distinguished from punitive damages, which are awarded in certain types of tort actions for actions which caused harm to the plaintiff. Penal damages are also different from treble damages, which are generally set by statute for certain violations competition law and related laws.