To successfully defend a wrongful dismissal lawsuit in Ontario, employers must prove the employee’s termination clause was legally valid, or that the severance offered meets common law standards based on the Bardal factors. You can also significantly reduce the payout if you prove the former employee failed to mitigate their damages by searching for a new job.
Letting an employee go is one of the most difficult decisions a business owner has to make. 💼 However, the stress multiplies exponentially when a former staff member hires an employment lawyer and serves your company with a Statement of Claim for wrongful dismissal. Ontario’s legal system is notoriously employee-friendly, and simply paying the minimums outlined in the Employment Standards Act (ESA) is rarely enough to protect your business from common law liabilities.
This guide will show you how to strategically defend your company against exaggerated severance claims. Whether your business operates in Toronto, Mississauga, or London, the principles of common law notice apply uniformly across the province. A strong defence relies on scrutinizing the employment contract, analyzing the employee’s efforts to find new work, and leveraging strategic settlement negotiations.
Step-by-Step Process in Ontario
Ignoring a lawsuit is a guaranteed way to lose by default. 📍 When your business is served in Ontario, you generally have 20 days to file a Statement of Defence (which increases to 40 days if served elsewhere in Canada or the US). Furthermore, your lawyer can secure an immediate, automatic 10-day extension (for a total of 30 days) by filing a standard Notice of Intent to Defend (Form 18A) under Rule 18.02 of the Rules of Civil Procedure. Here is how your corporate employment lawyer will structure your legal shield:
Step 1: Review the Employment Contract
The very first thing your lawyer will do is read the terminated employee’s original contract. They are looking specifically at the termination clause. If the clause is perfectly drafted and complies with all ESA minimums, it can legally restrict the employee’s severance to just a few weeks of pay. While the landmark Waksdale decision (2020) established that an invalid “for cause” provision voids the entire termination section, recent defining precedents like the Court of Appeal’s ruling in Dufault v. The Corporation of the Township of Ignace (2024 ONCA 915) and Baker v. Van Dolder’s Home Team Inc. (2025 ONSC 952) have set an even higher bar. Under these rulings, standard terms permitting termination “at any time” or in the employer’s “sole discretion” can automatically invalidate the termination clause, exposing businesses to substantial common law severance liabilities.
Step 2: Analyze the Bardal Factors
If the termination clause is void, your lawyer must calculate what the employee is actually owed under common law. 🔍 Ontario judges use the “Bardal factors” to determine reasonable notice. These include the employee’s age, their length of service, the character of their employment (e.g., senior executive vs. entry-level), and the current availability of similar jobs in the market. Your lawyer will argue that based on these factors, the employee’s demand for 24 months of pay is excessive and should be significantly reduced.
Step 3: Investigate the Duty to Mitigate
This is an employer’s strongest weapon. Under Ontario law, a fired employee cannot simply sit at home and collect a massive severance cheque; they have a strict legal “duty to mitigate” their damages by actively searching for comparable employment. Your law firm will demand to see their job search logs, interview records, and networking emails. If the employee cannot prove they aggressively looked for work, a judge will drastically reduce the severance your company has to pay.
Step 4: Attend Mandatory Mediation or Settlement Discussions
Very few wrongful dismissal cases actually reach a trial. ⚔ Once the Statement of Defence is filed, both sides typically exchange documents and schedule a formal mediation or settlement conference. Your lawyer will use the weaknesses in the employee’s case-such as a failure to mitigate or a strong employment contract-to negotiate a lower lump-sum settlement, allowing your business to move on without the unpredictability of a trial.
How Much Does it Cost in Ontario?
Defending an employment lawsuit requires a careful cost-benefit analysis. Fighting to the bitter end sometimes costs more in legal fees than the employee’s original severance demand. 💰 As of 2026, here is what employers can expect in CAD:
- Lawyer Retainer: Hiring a management-side employment law firm to draft your Statement of Defence and manage the initial stages typically requires a retainer of $5,000 to $10,000+ CAD.
- Mediation Costs: Attending a half-day private mediation usually costs between $1,500 and $3,000 CAD for your share of the mediator’s fee, plus your lawyer’s hourly preparation time.
- Settlement Payout: This varies wildly, but common law settlements often range from 3 to 4 weeks of pay per year of service, depending on the Bardal factors.
- Full Trial Costs: If the ex-employee refuses to settle and forces a trial in the Superior Court of Justice, your company’s legal fees can easily exceed $40,000 to $75,000+ CAD.
| Defence Strategy | What It Does | Impact on Severance |
|---|---|---|
| Valid Termination Clause | Enforces the signed contract limits | Limits payout to ESA minimums |
| Failure to Mitigate | Proves the employee didn’t look for work | Reduces payout significantly |
| Alleging Just Cause | Claims the employee committed severe misconduct | Eliminates common law notice; ESA minimums are still owed unless “wilful misconduct” is proven |
How Long Does the Process Take?
Employment lawsuits are a waiting game. ⏳ You must file your Statement of Defence within the required civil deadline after being served (usually 20 to 30 days, depending on whether a Notice of Intent to Defend is filed). After that, the “discovery” phase where documents (like mitigation logs) are exchanged typically takes 3 to 6 months. Most cases are successfully resolved at a mediation session roughly 6 to 12 months after the lawsuit began. If the matter proceeds all the way to a formal trial, it will generally take 1.5 to 3 years depending on the court’s backlog.
Frequently Asked Questions (FAQ)
Can I fire an employee simply because they are a poor fit?
Yes, in Ontario, you can terminate an employee “without cause” for almost any non-discriminatory reason (such as a poor culture fit or restructuring). However, if you terminate without cause, you are legally obligated to provide them with proper working notice or severance pay.
Why is it so hard to fire an employee for “Just Cause”?
In Canadian law, “Just Cause” is an extremely high threshold. However, you must distinguish between common law “just cause” and the much stricter statutory standard of “wilful misconduct” under the Ontario Employment Standards Act (ESA). Even if you have common law just cause for dismissal (such as systematic poor performance), you are still legally obligated to pay the employee their statutory ESA termination and severance pay unless their behavior rises to the level of “wilful misconduct, disobedience or wilful neglect of duty that is not trivial” (under O. Reg. 288/01). Failing to pay ESA minimums when asserting just cause is a critical legal risk that can invalidate your entire defence.
Does the employee collecting EI reduce what I owe them?
No. If the former employee is collecting Employment Insurance (EI) benefits, it does not reduce your severance obligations under common law. In fact, if you pay them a lump sum settlement later, the employee will likely have to repay a portion of their EI to Service Canada.
What if they sue my business in Small Claims Court?
If the employee is claiming $50,000 CAD or less, they can sue in the Ontario Small Claims Court. This venue is much faster and cheaper. You can defend your corporation using a licensed paralegal or a lawyer, and the matter is often resolved within 6 to 9 months.
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