- Ontario law protects opinions — even sharp, unfair, or exaggerated ones — because free expression about businesses and services is a public interest.
- To win a defamation action over a review, you must establish: 1.
- Before you decide to sue, understand Ontario's anti-SLAPP (Strategic Lawsuit Against Public Participation) legislation under the Courts of Justice Act.
A one-star review with false claims can follow your business for years. Whether it appears on Google, Yelp, a Facebook page, or a niche industry platform, a damaging review that contains lies — not just harsh opinions — may cross the line into defamation. In Ontario, suing over a negative online review is possible, but the legal bar is specific, and getting it wrong can make things worse.
This article explains when a bad review becomes actionable, what you need to prove, and what risks come with pursuing the claim.
Opinion vs. False Fact: The Critical Divide
Not every negative review is defamation. Ontario law protects opinions — even sharp, unfair, or exaggerated ones — because free expression about businesses and services is a public interest. The line is drawn at false statements of fact.
Consider the difference:
| Likely protected opinion | Potentially defamatory |
|---|---|
| "Worst meal I've ever had." | "I found rat droppings in my food." (false) |
| "This contractor is unprofessional." | "This contractor stole tools from my home." (false) |
| "I'd never hire them again." | "They billed me for work they never did." (false) |
A review can also be problematic even when worded as opinion if the overall impression it creates implies false, specific facts. Courts look at the full context, not just individual sentences.
What You Must Prove
To win a defamation action over a review, you must establish:
- The review contains a defamatory statement — a false assertion of fact that lowers you or your business in the eyes of reasonable people.
- The statement refers to you — identifying your business by name, location, or context is usually enough.
- The statement was published to third parties — an online review satisfies this automatically, since it is visible to the public.
Once you prove these three elements, the burden shifts to the reviewer to raise a defence. The most common defences are:
- Truth (justification): If the reviewer can prove the statement is substantially true, the claim fails — even if the truth is uncomfortable.
- Fair comment: A genuine expression of opinion on a matter of public interest, based on facts that are stated or known.
- Responsible communication: A qualified defence for communication on matters of public interest, even if not fully provable.
The Anti-SLAPP Risk
Before you decide to sue, understand Ontario's anti-SLAPP (Strategic Lawsuit Against Public Participation) legislation under the Courts of Justice Act. A reviewer who is sued can bring a motion to have the claim dismissed as an attempt to silence public discourse.
On such a motion, the court weighs:
- Whether the proceeding arises from an expression relating to a matter of public interest.
- Whether the plaintiff has grounds to believe the proceeding has substantial merit and the defendant has no valid defence.
- Whether the harm caused by the expression is serious enough to justify the proceeding.
If the court dismisses the claim on anti-SLAPP grounds, you can be ordered to pay the reviewer's full indemnity costs — a significant financial consequence. This is why suing over a review requires careful legal analysis before filing anything.
Steps to Take Before Suing
A lawsuit is rarely the first move. Consider this sequence:
1. Document everything
Take timestamped screenshots of the review, the platform URL, and any reviewer profile information. Online content can be edited or deleted.
2. Respond professionally (and carefully)
A calm, factual public response can limit reputational damage and shows potential customers your side. Do not admit liability or make counter-accusations in your response.
3. Report the review to the platform
Google, Yelp, and other platforms have policies against reviews that contain false factual claims, harassment, or content from people who are not genuine customers. A successful removal request resolves the problem without litigation. Success rates vary widely — platforms tend to protect reviewers — but it costs nothing to try.
4. Send a demand letter
A lawyer's letter formally identifying the false statements and demanding removal often prompts compliance without a lawsuit. Many reviewers do not expect a legal response and will take the review down.
5. Consider the anti-SLAPP risk
If the reviewer refuses to comply and you are considering litigation, get legal advice on whether the anti-SLAPP provisions create serious exposure for you. A well-counselled, targeted claim against a reviewer who made provably false statements is different from a broad suppression attempt.
Identifying an Anonymous Reviewer
If the review was posted under a pseudonym or anonymous account, you may need a court order (called a Norwich order in Ontario) to compel the platform to disclose the reviewer's identity before you can serve a statement of claim. This adds a step — and cost — to the litigation.
What Damages Can You Recover?
If you succeed, Ontario courts can award:
- General damages for harm to your business reputation.
- Special damages for proven lost revenue or contracts you can directly link to the review.
- Aggravated damages where the reviewer repeated the false claim, refused to remove it after being told it was false, or acted maliciously.
Courts look at how widely the review was read (number of views, star-rating impact), how long it stayed up, and whether the false facts were serious in nature.
Frequently asked questions
Can I sue someone for a bad review that is just mean, not factually false?
No. Ontario law protects harsh opinions. If the review contains no false statements of fact — only the reviewer's negative experience and opinions — it is very unlikely to succeed as a defamation claim.
Does the business have to be named to sue?
Not necessarily. If the review identifies your business by its nature, location, or context such that readers would reasonably understand who is being reviewed, the identification element is met.
What if the reviewer used a fake name?
You can apply to the court for an order requiring the platform to disclose the account information they hold. Success depends on whether the platform has useful data and whether Ontario courts have jurisdiction over the platform.
What does a defamation lawsuit over a review cost?
Litigation costs vary. Treadstone Law offers flat-fee pricing for many litigation steps so you know what you are spending before you commit. Call us to discuss your situation.
This is a litigation question
Start a file online — flat, published fees, reviewed by a licensed Ontario lawyer before a dollar is owed.