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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Work & Employment Rights Ontario » Wrongful Dismissal & Severance Ontario » Proportionality in Just Cause Dismissals in Ontario

Proportionality in Just Cause Dismissals in Ontario

10 Jun 2026 4 min read No comments Wrongful Dismissal & Severance Ontario
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Under Ontario employment law, the punishment must fit the crime. The Supreme Court of Canada established the principle of “proportionality,” meaning an employer cannot fire you “for cause” over a minor mistake. If termination is too harsh for the offence, it is a wrongful dismissal and you are entitled to full severance.

The Principle of Proportionality in Ontario Workplaces

Firing an employee “for cause” is often referred to as the capital punishment of employment law. ⚖ When an employer in Ontario uses this designation, they are completely severing the relationship without providing a single cent of severance pay or notice. Because the financial consequences for the worker are so severe, courts across the province demand that employers use this option only in the most extreme circumstances.

This is where the legal doctrine of proportionality comes into play. 📍 According to binding Supreme Court precedents, an employer must consider the context of the misconduct, the employee’s length of service, and their prior disciplinary record. If a dedicated worker in Mississauga or Toronto makes a single, honest mistake, terminating them immediately is wildly disproportionate. Instead, the employer should use progressive discipline (like a warning or suspension). Firing them instead constitutes wrongful dismissal.

Step-by-Step Process for Challenging a Disproportionate Firing

If you were abruptly fired for a minor error or an isolated lapse in judgment, do not assume your employer has the final say. 📝 You have the right to challenge their decision and pursue your standard severance package. Here is the generally recommended path for workers in Ontario.

Step 1: Request Your Record of Employment (ROE)

Ask for your ROE immediately, as you need it to apply for Employment Insurance (EI). 📄 If the employer codes it as a dismissal for cause, you will need to explain to Service Canada that the termination was disproportionate and is actively being contested. Maintain all documentation regarding the incident that led to your firing.

Step 2: Analyze Your Disciplinary History

Ontario courts look closely at an employee’s history. 💻 Were you a loyal employee for 10 years with a spotless record? Was this your first offence? Make a timeline of your employment, noting your positive performance reviews, to demonstrate that immediate termination was an unjustified overreaction.

Step 3: Hire an Employment Law Firm

Because “just cause” allegations are highly complex, you need an employment lawyer. 👥 A legal professional will use the principle of proportionality to dismantle your employer’s arguments. They will draft a formal demand letter explaining how the penalty did not match the alleged misconduct, triggering negotiations for your severance package.

Step 4: Filing at the Superior Court of Justice

If the employer refuses to retract the just cause allegation, your lawyer will launch a wrongful dismissal lawsuit. 💼 In Ontario, most claims exceeding $35,000 CAD are filed at the Superior Court of Justice. Through mandatory mediation and discoveries, employers usually realize they cannot prove their case to a judge and offer a settlement.

How Much Does a Lawyer Cost to Fight a Just Cause Firing?

Do not let a lack of funds stop you from clearing your name. 💰 Wrongful dismissal lawyers in Ontario generally offer flexible payment options to ensure you have access to justice.

Service NeededAverage Cost in Ontario (CAD)Description
Full Representation25% to 35% ContingencyYou pay absolutely nothing upfront. The lawyer takes a cut only when your severance is successfully recovered.
Hourly Advice$250 to $800 per hourIf you prefer traditional billing, rates depend entirely on the lawyer’s seniority and location.
Mediation Fee$1,500 to $4,000 per dayCost of a private mediator, typically split evenly with your former employer to settle out of court.

How Long Does the Process Take?

Proving a dismissal was disproportionate can take some time if the employer is stubborn. 🕎 While a strong demand letter from a reputable law firm in Ottawa or Brampton can force a quick settlement in 1 to 2 months, heavily contested “just cause” lawsuits can take much longer. If your case requires a full trial at the Superior Court of Justice, expect the timeline to be roughly 1.5 to 2.5 years.

Frequently Asked Questions (FAQ)

What justifies immediate termination in Ontario?

To bypass proportionality and fire you immediately without severance, the misconduct must fundamentally destroy the employment relationship. This is usually reserved for extreme actions, such as severe workplace violence, major theft, or intentional, large-scale fraud against the company.

What is progressive discipline?

Progressive discipline is an HR practice where punishments gradually increase in severity. Instead of immediate firing, an employer should generally use verbal warnings, written warnings, and unpaid suspensions to correct minor misbehaviour before resorting to termination.

Can a single mistake justify a just cause dismissal?

It is incredibly rare. Ontario courts have repeatedly ruled that unless a single mistake was severely dangerous or involved deep deceit, it does not warrant termination without severance. Honest errors or simple carelessness should be met with training, not firing.

Can I claim bad faith damages if they falsely claim cause?

Yes. If an employer alleges “just cause” maliciously, or tries to intimidate you into accepting no severance by making up exaggerated claims of misconduct, a judge in Ontario can award you additional “aggravated” or “punitive” damages on top of your regular severance pay.

A single mistake should not cost you your livelihood and your financial security. If you were unfairly fired for an offence that did not fit the punishment, use our directory to connect with a top-rated Ontario employment lawyer who will advocate for your rights and your severance pay.

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