Breach of Contract in Ontario: Your Legal Options

A breach of contract occurs when one party fails to fulfill their obligations under a legally binding agreement without a valid legal excuse. Contract breaches are among the most common civil disputes in Ontario, ranging from unpaid invoices to failed business deals.

What Makes a Contract Legally Enforceable?

For a contract to be enforceable in Ontario, it needs:

• Offer and acceptance: One party makes an offer, the other accepts
• Consideration: Something of value exchanged by both parties (money, services, goods)
• Intention to be legally bound: Both parties understood it was a serious agreement
• Certainty of terms: Key terms are clear enough to be enforced

Contracts don't need to be in writing to be enforceable — verbal contracts are valid in Ontario for most purposes. However, certain agreements (real estate, guarantees) must be in writing.

Types of Breach

• Material breach: A significant failure that goes to the heart of the contract — entitles the innocent party to treat the contract as ended and claim damages
• Minor (partial) breach: A technical failure that doesn't justify terminating — entitles you to damages but not to walk away
• Anticipatory breach: When a party indicates in advance they won't perform — you don't have to wait for the breach to occur before taking legal action

Remedies for Breach of Contract

• Damages: Money to put you in the position you would have been in if the contract had been performed. This includes direct losses and reasonably foreseeable consequential losses.
• Specific performance: A court order requiring the party to perform their obligations — typically available for unique goods or real property
• Injunction: A court order preventing the party from doing something that would breach the contract
• Rescission: Setting aside the contract and returning both parties to their original position

Your Duty to Mitigate

When a contract is breached, you have a legal duty to take reasonable steps to minimize your losses. Failing to mitigate can reduce the damages you're entitled to recover. For example, if a contractor abandons your project, you should arrange for another contractor rather than leaving the work incomplete indefinitely.