ARTICLE
9 July 2025

Breach Of Contract In Ontario: Your Legal Roadmap To Protecting Business Interests

Pacific Legal PC

Contributor

Pacific Legal is a corporate and commercial law firm dedicated to helping businesses succeed through expert legal counsel. Specializing in mergers and acquisitions, private equity, cross-border transactions, and complex contracts, the firm offers the capabilities of a large practice with the personalized service of a boutique. With a client-focused approach, Pacific Legal delivers tailored legal solutions that address immediate needs while supporting long-term growth. Clients benefit from strategic insight, efficient execution, and a strong commitment to lasting partnerships that deliver measurable results.

When a breach of contract undermines trust in a business relationship, be it a missed service deadline, a vendor failing to deliver, or a partner violating the terms of an agreement...
Canada Ontario Corporate/Commercial Law

When a breach of contract undermines trust in a business relationship, be it a missed service deadline, a vendor failing to deliver, or a partner violating the terms of an agreement, the consequences can be financially and professionally damaging. In such situations, clients need not just a legal technician, but a strong, strategic ally who understands the real-world implications of contractual failures. They need a team that can guide them from initial evaluation and negotiations through to successful dispute resolution or courtroom advocacy.

Pacific Legal applies its knowledge, experience, and client-focused representation to support businesses in Ontario through contract challenges. Having knowledge and experience in the management of contract disputes, contract enforcement, and commercial litigation, we offer individualized legal solutions based on both statutory law and judicial precedent.

Pacific Legal handles both routine contract matters and complex disputes, including material breaches and cross-border issues, drawing on its experience with diverse commercial clients in Ontario. Our approach combines legal precision, clear communication, and strategic advocacy tailored to the needs of individuals and businesses navigating breach of contract matters.

What Is a Breach of Contract?

A breach of contract occurs when one party fails to meet its performance obligations, violating the terms of the agreement without a lawful excuse. Ontario law recognizes two main types of breaches: a material breach of contract, which goes to the heart of the agreement and significantly impairs its value, and a minor breach, which affects only a peripheral obligation. The nature and severity of the breach determine the available legal remedies in contract disputes. A material breach often entitles the non-breaching party to terminate the contract and seek substantial damages for breach of contract, while a minor breach typically allows the contract to continue with a claim for limited damages.

To illustrate, consider a scenario where a business hires a marketing agency to develop and launch a full-scale campaign before a critical holiday season. If the agency is unable to provide any promotional materials prior to the set launch date, the opportunity to enjoy high sales during peak season will be lost. This would possibly amount to a material breach, as the purpose of the contract is frustrated by the deadline that was not met. On the other hand, if the agency delivers the campaign a day late but with all promised materials intact and usable, it might be classified as a minor breach, resulting in only nominal compensation. Understanding the difference between these classifications is essential to determining your legal options.

Wastech Services Ltd. v. Greater Vancouver Sewerage and Drainage District (2021 SCC 7, CanLII)

In this case, the Supreme Court of Canada clarified the duty of good faith in the performance of contracts, particularly in discretionary clauses. According to the Court, one party should exercise contractual discretion in good faith, which is reasonable and cannot be arbitrarily and capriciously established. This ruling reaffirmed the fact that even though parties are in business to enter contracts, their actions should be geared towards following the larger rule of acting in good faith, particularly when discretion comes in.

Common Types of Contract Disputes in Ontario

Contract disputes in Ontario often arise from:

  1. Commercial contract breach – e.g., supply agreements, M&A, joint ventures
  2. Breach of service agreement – missing deadlines or inferior quality
  3. Real estate and commercial contract issues
  4. Employment and consultant agreements
  5. Verbal agreements in consumer contracts

Despite the enforceability of verbal agreements in Ontario, oral promises are often hotly contested. While enforceable under certain conditions, they're vulnerable in complex matters.

Pacific Legal offers individualized legal strategies supported by negotiation and dispute resolution experience.

Remedies for Breach of Contract in Ontario

The Ontario law contains a variety of legal remedies for contract disputes to either restore the non-breaching party to the original position or ensure that the breaching party meets its obligations. Such remedies differ with the extent and kind of breach:

  • Damages: This is the most common remedy and involves monetary compensation for losses suffered due to the breach. Courts may award general, consequential, or liquidated damages depending on the case specifics.
  • Specific performance: This equitable remedy compels the breaching party to fulfill their contractual duties when monetary compensation is inadequate, particularly in contracts involving unique goods or real estate.
  • Rescission: When a contract is fundamentally undermined by a material breach, the court may cancel it entirely, restoring both parties to their pre-contract positions.
  • Injunction: Used to prevent a party from engaging in actions that would cause irreparable harm, such as misusing confidential business information or violating non-compete clauses.
  • Penalty for breach of contract: While Ontario courts respect agreed-upon liquidated damages clauses, they will not enforce penalties that are excessive or punitive. The clause must reasonably estimate the actual loss likely to result from a breach.

In practice, a demand letter for breach is a powerful pre-litigation tool. It describes specifically the supposed violation, demands corrective measures, and alerts that legal repercussions will follow in case it is not taken into account. To illustrate, consider the case of a professional contractor who promises to finish the renovation of a commercial establishment in a span of 60 days. There is no significant change after 90 days. The client may issue a demand letter seeking damages or contract termination, which can often prompt a settlement without escalating to court. At Pacific Legal, crafting effective and legally sound demand letters is one of the many strategies we use to resolve disputes efficiently and favourably for our clients.

Awad v. Dover Investments Ltd. (2021 ONSC 5437, CanLII)

In this Ontario Superior Court decision, the enforceability of a 500% penalty clause in a shareholder agreement came under scrutiny. One party failed to meet capital contribution obligations (commonly known as "cash calls"), triggering the high penalty clause. The defendant argued that this amounted to an unenforceable penalty for breach of contract. However, the court upheld the clause, finding that it represented a genuine pre-estimate of loss given the potential financial damage to the partnership and the commercial sophistication of the parties. The judgment reinforced that Ontario courts will enforce even steep penalties if they are not arbitrary or punitive in nature, particularly in arm's-length commercial contracts.

When You Need a Breach of Contract Lawyer

Consider consulting a lawyer if:

  • You've suffered financial loss from a material breach of contract.
  • A counterparty refuses to perform a commercial contract.
  • Enforcement of verbal contracts is challenged.
  • You're facing litigation in Superior Court or Small Claims.
  • Legal assistance may be necessary if urgent relief is needed (e.g., injunction or specific performance)

While civil litigation lawyers in Toronto and contract litigation lawyers have solid reputations, Pacific Legal combines tailored legal services with the capability to manage sophisticated contract issues.

What a Breach of Contract Lawyer Does for You

A dedicated breach of contract lawyer offers:

  • Initial review to determine if the incident constitutes a material vs minor breach
  • Issuance of a demand letter to clarify obligations or seek remedies
  • Negotiation or alternative dispute resolution (mediation, arbitration)
  • Preparation and filing of court claims (Small Claims or Superior Court)
  • Strategic court advocacy, including specific performance or indemnity
  • Post‑judgment assistance with enforcement

A multidisciplinary team of contracts, arbitration, and transactional practitioners at Pacific Legal enable you to see through every step of the way with a clear and confident outlook.

How to Choose the Right Breach of Contract Lawyer in Ontario

Selecting the right lawyer requires attention to several factors:

1. Technical Expertise

2. Jurisdictional Experience

3. Reputation & Resources

  • Infrastructure to support complex contract disputes
  • Testimonials and peer recognition in directories

4. Strategic Mindset

  • Proficient in ADR (mediation, arbitration, negotiation)
  • Aggressiveness in court + negotiation finesse
  • Analytical ability to differentiate material vs minor breach, target appropriate legal remedies

A knowledgeable and strategic legal partner can make all the difference.

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

Mondaq uses cookies on this website. By using our website you agree to our use of cookies as set out in our Privacy Policy.

Learn More