Performance Reviews in Ontario: Legal Risks Employers Must Avoid

Performance reviews are not just internal HR tools. When an employee is terminated, disciplined, or denied a promotion, your performance reviews become legal evidence. Courts and tribunals examine them to determine whether the decision was justified, whether proper process was followed, and whether any discrimination occurred. Employers who treat performance reviews casually are often the ones who lose employment disputes that could have been avoided entirely.

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Inconsistent performance reviews, inflated feedback that contradicts the termination, or missing documentation can significantly undermine your defence. Get legal advice before responding to a claim.

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Why performance reviews create legal risk for Ontario employers

Most employer-side cases that go wrong in Ontario courts share a common pattern. The performance review record does not support the termination decision. Courts look for consistency between what was documented during employment and the reasons given for termination. Where that consistency is missing, the employer's credibility suffers.

Reviews that are consistently positive followed by a sudden termination for performance reasons create an immediate credibility problem for the employer

Vague feedback that does not identify specific issues leaves no evidence that the employee understood what was expected or had a genuine opportunity to improve

Missing documentation means the employer cannot prove what was communicated, when it was communicated, or what the employee's response was

Sudden discipline or termination without a documented record of prior concerns looks like bad faith, which courts may compensate separately from the notice award

Inconsistent standards across employees where some are held to strict account and others are not can support a discrimination allegation regardless of the employer's intent

If it is not written down, it may not exist legally. An employer who verbally counselled an employee about performance issues for months but never documented those conversations will struggle to establish just cause or even a genuine without-cause termination narrative in court.

What a legally defensible performance review looks like

Principle 1

Objective

Based on specific, measurable job duties and outcomes rather than personality, attitude, or general impressions. Objective criteria are harder to challenge as biased or discriminatory.

Principle 2

Consistent

Applied in the same way across employees in comparable roles. Inconsistency in how standards are applied is one of the most common bases for a successful discrimination allegation.

Principle 3

Timely

Issues documented when they arise, not months later. A performance concern that is raised for the first time in a termination letter will not support a for-cause dismissal and undermines any without-cause narrative.

Principle 4

Accurate

Inflated or overly positive reviews that do not reflect actual performance are a significant liability. Courts regularly award higher damages where the termination is inconsistent with a record of positive reviews.

Principle 5

Documented

Written records of feedback, expectations set, and follow-up conversations. The employee should sign or acknowledge the review. Documentation of what was communicated and when is what allows the review to serve as legal evidence.

Principle 6

Action-oriented

Where performance concerns are identified, the review should include specific expectations, timelines for improvement, and any support or training the employer will provide. A performance improvement plan without follow-through carries little legal weight.

Human rights risks in the performance review process

This is where many Ontario employers face unexpected liability. Performance issues are sometimes connected to a protected ground under Ontario's Human Rights Code without the employer recognizing it. Where an employee's performance is affected by a disability, a mental health condition, a family status obligation, or a medical leave, the employer's response to those performance concerns may trigger accommodation obligations rather than disciplinary ones.

Disability and mental health

An employee whose performance declines as a result of a disability or mental health condition may be entitled to accommodation rather than discipline. Penalizing absences or reduced productivity without first exploring accommodation may constitute discrimination under the Human Rights Code.

Family status

Employees with caregiving responsibilities for children or dependent family members may require scheduling or workload accommodation. Performance standards that are applied without any consideration of these obligations carry human rights risk.

Medical leave

Negative performance reviews completed shortly after an employee returns from medical leave, or that penalize the employee for the leave itself, are a significant human rights risk. The timing of reviews relative to leaves is closely scrutinized in discrimination complaints.

Unconscious bias

Subjective criteria, inconsistent standards, and personality-based assessments often reflect unconscious bias. Even where no discriminatory intent exists, outcomes that disproportionately affect employees with protected characteristics can give rise to successful complaints.

Are you managing underperformance and considering termination?

The documentation you build now determines the strength of your position if a claim is filed later. Our team advises employers across Ontario on terminations and layoffs and on building defensible performance management processes. Get advice before you act.

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Performance management before termination: what courts expect

Where a termination is performance-based, Ontario courts examine whether the employer followed a fair process before dismissing the employee. This typically means identifying specific performance gaps in writing, setting measurable expectations and timelines for improvement, providing any support or training reasonably available, giving the employee a genuine opportunity to meet those expectations, and documenting each step. A sudden termination without this record is very difficult to defend as a for-cause dismissal and may attract additional damages for bad faith even in a without-cause termination.

The most common and costly employer mistake is giving an employee consistently positive reviews and then terminating them for performance without any documented record of the concerns. Courts interpret this pattern as evidence that either the performance was not genuinely an issue or that the employer acted in bad faith. Either outcome increases the employer's liability significantly.

Performance review compliance checklist for Ontario employers

Review criteria are based on specific, measurable job duties rather than personality or subjective impressions

The same standards are applied consistently across employees in comparable roles

Performance concerns are documented when they arise, not reconstructed at termination

Employees are made aware of specific concerns and given a genuine opportunity to improve with clear timelines

Accommodation considerations are assessed before any discipline where performance may be connected to a disability, medical condition, or protected ground

Reviews are acknowledged or signed by the employee to establish that the concerns were communicated

Managers are trained to avoid subjective, personality-based, or inconsistent assessments

Legal advice is obtained before any termination where performance is the stated reason, particularly where the review record is thin

Frequently asked questions about performance reviews and employment law in Ontario

Can performance reviews be used as evidence in court in Ontario?

Yes, and they frequently are. Performance reviews are often the most important evidence in wrongful dismissal and human rights cases in Ontario. Courts use them to assess whether the stated reason for termination is credible, whether proper process was followed, and whether there is consistency between the employer's documented concerns and the termination decision. Employers who have maintained accurate, timely, and consistent review records are far better positioned to defend termination decisions.

What happens if our performance reviews are inaccurate or overly positive?

Inaccurate or inflated reviews that contradict the reason for termination significantly undermine the employer's credibility in any subsequent dispute. Courts regularly award higher damages in wrongful dismissal cases where the termination is inconsistent with a record of positive reviews. If your review history does not support the termination decision, get legal advice before proceeding.

Do employers need to document performance issues before terminating in Ontario?

For a for-cause termination based on performance, courts expect documented evidence of specific concerns, communication to the employee, and a genuine opportunity to improve. Without that record, a for-cause termination is very difficult to defend. For a without-cause termination, documentation of performance issues is not strictly required, but a strong paper trail of documented concerns reduces the risk that the termination will be characterized as bad faith.

Can a performance review process lead to a human rights complaint in Ontario?

Yes. Where performance standards are applied inconsistently, where subjective criteria disproportionately affect employees with protected characteristics, or where performance concerns are linked to a disability, medical condition, or other protected ground and the employer fails to explore accommodation, a human rights complaint may arise alongside or instead of a wrongful dismissal claim. Human rights damages are awarded in addition to, not instead of, standard notice entitlements.

Should we get legal advice before terminating an employee for performance reasons?

Yes, particularly where the review record is thin, inconsistent, or where the employee has recently returned from a medical leave, raised a human rights concern, or has a long tenure. A lawyer can assess the strength of your documentation, identify whether accommodation obligations have been met, and advise on the least risky path forward. Getting advice before the termination is far less expensive than defending a wrongful dismissal claim after it.

Are you managing a difficult performance situation or preparing for a termination?

The documentation and process you have in place now determines your legal exposure later. Our team advises employers across Ontario on terminations and layoffs, performance management, and employment disputes. Contact us for a confidential consultation.

Call us at 1-800-771-7882 or fill out the form below and we will be in touch.

The article in this client update provides general information and should not be relied on as legal advice or opinion. This publication is copyrighted by Achkar Law Professional Corporation and may not be photocopied or reproduced in any form, in whole or in part, without the express permission of Achkar Law Professional Corporation. ©

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