Employer s Defamation Claim Dismissed -Anti-SLAPP Risks in Workplace Disputes
Date: September 17, 2025

Employer’s Defamation Claim Dismissed: Anti-SLAPP Risks in Workplace Disputes

Defamation claims can seem like a straightforward tool when an employer believes a former employee has damaged their reputation. Contrans Tank Group GP Inc. v. Chen, 2024 ONSC 5441 is a sharp reminder that in Ontario, reaching for defamation in a workplace dispute without solid legal grounds can backfire significantly. The employer's claim was dismissed under Ontario's anti-SLAPP legislation, the former employee was awarded damages, and the employer was ordered to pay full costs.

This case sits at the intersection of employment litigation and defamation law and illustrates how quickly a reputational claim can become a significant legal and financial liability when the underlying dispute involves public interest speech.

Case
Contrans Tank Group GP Inc. v. Chen
Citation
2024 ONSC 5441
Court
Ontario Superior Court of Justice
Date
August 16, 2024
Legislation
Courts of Justice Act, s. 137.1
Outcome
Employer's claim dismissed; $5,000 damages and full costs awarded to employee

Background: a wage dispute that became a defamation claim

Z.C. was a truck driver employed by Contrans Tank Group in Woodstock, Ontario. He alleged that during his employment he was underpaid and that the company targeted immigrant and minority workers for improper pay deductions. He also alleged that he was pressured to work on holidays as a Chinese immigrant.

After leaving the company, Z.C. sent an email to former colleagues warning them to check their paycheques and stating that Contrans was not an honest company. The statement was not posted publicly: it was directed to former coworkers who had direct personal experience of the same employment relationship.

Contrans responded by commencing a defamation action against Z.C. and seeking an injunction preventing him from contacting employees or discussing the company's pay practices. Z.C. responded by bringing a motion under section 137.1 of the Courts of Justice Act, Ontario's anti-SLAPP provision.

What is a SLAPP lawsuit?
A SLAPP, or Strategic Lawsuit Against Public Participation, is a lawsuit used not to resolve a genuine legal grievance but to silence, intimidate, or financially drain someone who has spoken out on a matter of public interest.

Section 137.1 of Ontario's Courts of Justice Act allows defendants to bring an early dismissal motion where the claim arises from an expression relating to a matter of public interest. Once the motion is brought, the plaintiff must satisfy the court that there are grounds to believe the proceeding has substantial merit and that the public interest in allowing it to continue outweighs the public interest in protecting the expression. If they cannot, the claim is dismissed.

What the court decided and why

Step one: was the expression on a matter of public interest?

The court had no difficulty finding that Z.C.'s email arose from an expression on a matter of public interest. Pay practices that may disadvantage workers, particularly those from immigrant and minority communities, are matters of genuine public concern. The fact that the email was sent to former coworkers rather than published publicly did not remove it from the public interest category: the substance of the expression, not its medium, determines whether the provision applies.

Step two: could Contrans justify proceeding?

Once the anti-SLAPP motion was brought, the burden shifted to Contrans. The company had to satisfy the court that there were grounds to believe the defamation claim had substantial merit and that the public interest in allowing the lawsuit to continue outweighed the public interest in protecting Z.C.'s expression. The court found Contrans could not meet this threshold. There was a reasonable basis to believe Z.C. might successfully defend the claim on the grounds of truth or justification, and the potential reputational harm to Contrans did not outweigh the chilling effect the lawsuit would have on legitimate workplace speech.

The improper purpose finding

The most significant aspect of the decision was the court's finding on purpose. After Z.C. brought the anti-SLAPP motion, Contrans attempted to discontinue the lawsuit. The court found this timing telling: the employer moved to drop the claim only after Z.C. had completed the procedural steps necessary to bring it to a hearing. The court found the action was brought to silence and intimidate Z.C., not to resolve a legitimate legal grievance about reputational harm. This finding directly informed the damages and costs award.

The outcome: damages and full costs against the employer

The court dismissed Contrans' defamation claim. Z.C. was awarded $5,000 in statutory damages under section 137.1(9) of the Courts of Justice Act. Contrans was ordered to pay full indemnity costs associated with the anti-SLAPP motion.

The combination of statutory damages and full indemnity costs is a significant financial consequence for a claim that was brought but could not be sustained. It reflects the legislature's deliberate design: anti-SLAPP costs are awarded on a full indemnity basis precisely to deter the use of defamation litigation as a silencing tool.

Under section 137.1 of the Courts of Justice Act, costs on a successful anti-SLAPP motion are awarded on a full indemnity basis as the default. This is a deliberate legislative choice: partial indemnity costs would still leave the defendant with a financial burden for having spoken out, which would partially achieve the SLAPP's chilling purpose. Full indemnity costs remove that advantage entirely.

What this case means for employers considering defamation claims

The decision in Contrans is a practical illustration of the risks that arise when defamation is used to respond to workplace criticism rather than to address a genuine legal harm. Four lessons emerge directly from the court's analysis.

Workplace speech is frequently public interest speech

Courts apply the public interest category broadly. Statements about pay practices, workplace discrimination, and treatment of vulnerable workers are not merely private grievances between an employer and an employee. They are matters other workers, regulators, and the public have a legitimate interest in knowing about. An employer who treats such speech as pure defamation without engaging with its public interest dimension faces a significant anti-SLAPP risk.

Truth is a complete defence and courts assess its viability early

On an anti-SLAPP motion, the court does not fully adjudicate the truth of the statements. But it does assess whether there is a reasonable basis to believe the defendant might succeed on a defence of truth or justification. Where the underlying statements relate to verifiable facts about employment practices that the employee experienced directly, this threshold is often met. A defamation claim against an employee who is describing their own experience requires a very strong legal position to survive anti-SLAPP scrutiny.

Timing and conduct are scrutinised for improper purpose

The court's finding that Contrans acted for an improper purpose was grounded in the timing of the attempted discontinuance. Attempting to drop a lawsuit after the defendant has incurred the cost and effort of bringing an anti-SLAPP motion does not avoid the consequences: the court will assess why the claim was brought in the first place. Litigation conduct throughout the proceeding is relevant to the improper purpose analysis.

The costs risk is asymmetric and substantial

Full indemnity costs on a successful anti-SLAPP motion can be substantial. The employer in Contrans not only failed to obtain any relief but was also left paying the former employee's legal costs in full plus statutory damages. For employers considering defamation claims in workplace contexts, the potential costs exposure on an anti-SLAPP motion must be part of the risk assessment before proceedings are commenced.

Considering a defamation claim arising from a workplace dispute?

The anti-SLAPP risk is real and the costs consequences of an unsuccessful claim are significant. Get legal advice on whether the claim has the legal foundation to withstand a section 137.1 motion before it is filed. A claim that cannot survive an anti-SLAPP motion will cost more to bring than to abandon.

Call: 1-800-771-7882 Assess Your Defamation Claim Before You File

What this case means for employees facing defamation claims

The anti-SLAPP provision in section 137.1 of the Courts of Justice Act is a genuine and powerful defence for employees who face defamation actions in response to legitimate workplace speech. The decision in Contrans confirms that courts will scrutinise the purpose behind such claims and will not allow the litigation process itself to be used as a silencing mechanism.

An employee who has made statements about their employer's pay practices, workplace treatment, or other matters of genuine employment concern and who then faces a defamation claim should assess anti-SLAPP protection early. The motion must be brought before delivering a defence, and it halts the rest of the proceeding while it is determined. The costs incentives, full indemnity costs if successful, make it a remedy worth pursuing where the legal basis exists.

Facing a defamation claim after raising workplace concerns, or assessing whether to bring one?

Both positions carry specific legal risks that require careful analysis before any steps are taken. Achkar Law advises on defamation claims and employment litigation across Ontario.

Understand Your Position Before You Act Or call us: 1-800-771-7882

The anti-SLAPP framework under section 137.1 of the Courts of Justice Act

For completeness, the anti-SLAPP motion process under section 137.1 of the Courts of Justice Act works as follows. Once a defendant brings the motion, the proceedings are stayed. The defendant must establish that the claim arises from an expression relating to a matter of public interest. If they do, the burden shifts to the plaintiff to satisfy the court on two grounds: first, that there are grounds to believe the proceeding has substantial merit and that the defendant has no valid defence; and second, that the public interest in allowing the proceeding to continue outweighs the public interest in protecting the expression.

If the plaintiff cannot satisfy either branch, or if the court finds the proceeding was brought for an improper purpose, the claim is dismissed. Costs are awarded on a full indemnity basis to the successful defendant, and the court may also award damages under section 137.1(9).

The framework is deliberately weighted in favour of defendants who have spoken on matters of public interest. The legislature's concern was that the cost of litigation itself, regardless of outcome, could deter legitimate public interest speech. The full indemnity costs provision and the statutory damages award address this concern directly.

Practical takeaways

Defamation claims arising from workplace speech face significant anti-SLAPP risk in Ontario. Courts treat statements about pay practices, workplace discrimination, and treatment of vulnerable workers as public interest speech subject to section 137.1 protection.
On an anti-SLAPP motion the burden shifts to the plaintiff to justify the claim. An employer who cannot demonstrate substantial merit and that the public interest in the lawsuit outweighs the public interest in the expression will have the claim dismissed.
Costs on a successful anti-SLAPP motion are awarded on a full indemnity basis. For employers, this means the costs exposure of an unsuccessful defamation claim is significantly higher than in ordinary litigation.
Attempting to discontinue a defamation claim after the defendant has brought an anti-SLAPP motion does not avoid the consequences. Courts assess the purpose behind the original claim and will award damages and costs where an improper purpose is found.
Employees facing defamation claims after raising workplace concerns should assess anti-SLAPP protection early. The motion must be brought before a defence is delivered and stays all other proceedings while it is determined.
Defamation should rarely be the first response to workplace criticism. Internal investigations, contractual remedies, and targeted legal advice on the specific statements in question are lower-risk starting points for employers concerned about reputational harm.

Dealing with a defamation claim or workplace dispute that has escalated into litigation? Tell us what's happening.

Whether you are an employer assessing the risk of a defamation claim arising from a workplace dispute, or an individual who has been served with a defamation action after raising legitimate concerns, Achkar Law can assess your position and advise on the right strategy. We handle defamation claims and employment litigation across Ontario.

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