Ontario Severance

Mitigation of Damages — Ontario Employment Law

106 casesDecisions from 1916–2025

About Mitigation of Damages

Many employees in Ontario believe that if they are wrongfully dismissed, they are automatically entitled to a large payout covering a lengthy period of unemployment. However, the law imposes a crucial responsibility on the dismissed employee known as the 'duty to mitigate damages.' In simple terms, this means you cannot sit back and wait for a cheque; you have a legal obligation to take reasonable steps to find a new, comparable job to reduce your financial losses. This principle is rooted in common law and significantly impacts the amount of damages you can recover in a wrongful dismissal claim.

The core of mitigation is the job search. You are expected to actively and diligently look for work that is similar in status, responsibility, and pay to the position you lost. This doesn't mean you have to accept the very first offer, especially if it's a significant step down. However, you cannot be overly picky, such as only applying for senior executive roles if you were a mid-level manager. The burden of proof is on the employer to show that you failed to mitigate. They must demonstrate that comparable jobs were available and that you did not take reasonable steps to secure one.

It's critical to distinguish between common law reasonable notice damages and statutory entitlements under Ontario's Employment Standards Act, 2000 (ESA). The duty to mitigate applies only to common law damages. Your entitlement to minimum termination pay and severance pay under the ESA is a fixed amount based on your service and is not reduced by any income you earn from a new job. Understanding this distinction is vital. Because the reasonableness of a job search is highly dependent on individual facts like your age, seniority, and the job market, navigating a mitigation dispute often requires tailored legal insight.

Frequently Asked Questions

What exactly does 'mitigation of damages' mean after being fired in Ontario?

It's your legal duty as a wrongfully dismissed employee to make reasonable efforts to find a new, comparable job. The goal is to minimize your financial losses, and any income you earn from a new job during your notice period will typically reduce the damages your former employer owes you.

Do I have to accept any job I'm offered to mitigate my damages?

No. You are only required to seek and accept 'comparable employment,' which means a job similar in salary, status, and responsibilities. You are not obligated to take a significant demotion or a job in a completely different field just to mitigate.

What proof do I need to show I tried to find a new job?

You should keep a detailed record of your job search. This includes a log of all jobs you applied for, copies of cover letters and resumes sent, emails with recruiters, and notes from interviews or networking events. This documentation is crucial evidence to counter an employer's claim that you failed to mitigate.

Does my duty to mitigate affect my statutory severance or termination pay under the ESA?

No, it does not. The duty to mitigate only applies to common law reasonable notice damages. Your minimum entitlements to termination pay and severance pay under the Employment Standards Act, 2000 are separate and are not reduced by income from a new job.

What if I was constructively dismissed? Do I have to accept the 'new' bad job to mitigate?

In some situations, yes. If the changes to your job are not objectively humiliating or unreasonable, a court might expect you to stay in the modified role to mitigate your losses while you search for other work. This is a very complex area and depends heavily on the specific facts.

How long do I have to keep looking for a job?

Your duty to mitigate damages lasts for the duration of your common law reasonable notice period. Once that period expires, your legal obligation to mitigate in relation to that specific wrongful dismissal claim also ends.

My former employer is accusing me of not trying hard enough to find a job. When should I get legal advice?

You should seek legal advice immediately. An employer's allegation that you failed to mitigate is a direct challenge to your damages claim. A lawyer can help you assess the strength of your job search evidence and formulate a legal response to protect your entitlement.

Common Scenarios

  • A senior marketing director is wrongfully dismissed and keeps a detailed spreadsheet of over 100 job applications, networking coffees, and interviews, which is later used as evidence to prove she properly mitigated her damages.
  • After being terminated, a software developer takes a four-month vacation before starting his job search. His former employer argues they are not responsible for damages during that four-month period due to his failure to mitigate.
  • A long-service administrative assistant is terminated and refuses to apply for any jobs paying less than her previous role, even though similar roles in her city now pay 10% less on average.
  • An employee is constructively dismissed when her sales territory is cut in half. She quits immediately, but the court later finds she should have stayed in the role to mitigate her damages while looking for a new job, reducing her overall award.

What You Should Know

  • Start your job search immediately after termination and document everything. Create a log to track applications, interviews, and networking efforts.
  • Focus your search on roles that are comparable to your previous one in terms of pay, seniority, and type of work to satisfy your duty to mitigate.
  • Be aware that any income earned from new employment during your common law notice period will likely be deducted from the damages your former employer owes you.
  • Remember that your statutory entitlements under the Employment Standards Act, 2000 (ESA) are separate and are not reduced by mitigation income.
  • If your former employer raises the issue of mitigation, consult with an employment lawyer to review your job search efforts and ensure your claim for damages is protected.

Featured Cases

S. v. Ontario Research and Innovation Network

2025 ONSC 1839 (CanLII) · 2025-04-01

Wrongful Dismissal: 2.25 Years Service Awarded 6 Months Notice

This wrongful dismissal case involved a plaintiff terminated without cause after two years and three months of service. The court awarded six months' reasonable notice based on Bardal factors and determined the plaintiff was entitled to commissions based on the original employment agreement despite the draft plan never being finalized. Damages were calculated for the notice period, unpaid commissions, and loss of benefits, subject to mitigation for earnings from new employment.

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D.C. v. Arista Homes Limited

2024 ONSC 1035 (CanLII) · 2024-02-23

This is a wrongful dismissal case involving a dispute over the contract of employment and termination without cause. The legal issues addressed include the determination of reasonable notice and the employee's duty to mitigate damages.

mitigation of damages reasonable notice termination without cause wrongful dismissal

Monterosso v. Metro Freightliner Hamilton Inc.

2023 ONCA 413 (CanLII) · 2023-06-14

This is an appeal to the Court of Appeal from a trial judge's decision regarding the early termination of an independent contractor. The employer engaged the worker on a 72-month fixed-term contract but terminated his services without cause with 65 months remaining. The trial judge awarded the worker $552,500 plus HST for the balance of the term and held that he was not required to mitigate his damages. The Court of Appeal decided that the trial judge erred in law, clarifying that independent contractors on fixed-term contracts do have a duty to mitigate. However, because the employer failed to prove that the worker did not take reasonable steps to find new work, the Court of Appeal dismissed the appeal and upheld the $552,500 award.

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S. v. Oz Optics Limited

2022 ONSC 6225 (CanLII) · 2022-11-03

Wrongful Dismissal: 6 Months Notice for 61-Year-Old Employee

This wrongful dismissal case addressed the appropriate common law notice period for a 61-year-old employee with 3.5 years of service in a specialized technical position. The court awarded six months' notice, finding the employee reasonably mitigated damages and that the employer failed to prove otherwise. Additionally, the termination clause was found void for non-compliance with the ESA, entitling the employee to full common law notice.

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K. v. Gard-X Automotive Refinish Inc.

2020 ONSC 37 (CanLII) · 2020-01-06

Wrongful Dismissal: Mitigation and Overtime Earnings

This is an appeal from a trial judge's decision in a wrongful dismissal case involving an employee dismissed with three months' working notice. The Divisional Court addressed whether the trial judge erred in calculating damages by excluding overtime earnings from the employee's new employment and whether surplus earnings reduced damages for a period of unemployment. The appellate court reversed the trial judge's decision, holding that all earnings from replacement employment should apply as mitigation.

damages calculation mitigation of damages overtime earnings surplus earnings wrongful dismissal

B. v Cascades Canada ULC

2017 ONSC 2583 (CanLII) · 2017-04-27

Wrongful Dismissal: Mitigation and Retraining After 28 Years

This wrongful dismissal case addressed whether a plaintiff terminated after 28 years of service failed to mitigate damages by choosing to retrain as a welder rather than applying for comparable positions offered by the employer. The court applied the Michaels v. Red Deer College test, finding that the employer met its onus to show comparable positions were available and that the plaintiff could have procured them. Consequently, the plaintiff's entitlement to damages ended when they failed to seek available comparable employment, and the employer was not liable for retraining costs.

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RJM56 Investments Inc. v. K.

2016 ONCA 821 (CanLII) · 2016-11-04

Withholding Taxes on Settlement Funds in Trust for Costs

This is an appeal to the Court of Appeal from a judgment on an application and summary judgment motion about interpreting minutes of settlement. An employer and employee settled actions, with the employer agreeing to pay $250,000 for costs to the employee's lawyers in trust with no deductions, and $1,250,000 to the employee. Based on tax advice, the employer paid the costs amount without deductions but deducted the tax withholding for that amount from the employee's share. The application judge found the employer breached the minutes and ordered it to pay the deducted amount to the employee. The Court of Appeal allowed the appeal, finding the minutes were ambiguous and the employee suffered no loss because the withheld amount was remitted to the CRA to his credit.

contract interpretation damages mitigation of damages settlement agreement

R. v ZoomerMedia Limited

2016 ONSC 1567 (CanLII) · 2016-03-04

Severance Pay: Contractual Entitlements Not Subject to Mitigation

This is a summary judgment motion concerning a breach of employment agreement where the plaintiff sought severance and sabbatical payments. The court applied contract interpretation principles to determine that the plaintiff was entitled to these fixed contractual payments and was not required to mitigate damages for them. The court also rejected the defendant's argument that the plaintiff had waived these rights and dismissed claims for bad faith or aggravated damages due to lack of evidence of high-handed conduct.

employment agreement mitigation of damages severance pay summary judgment waiver

410784 Ontario Limited v. Little Zinger Inc. (Corktown Esso)

2016 ONCA 90 (CanLII) · 2016-02-02

Appeal Dismissed in Fiduciary Duty Case Over Secret Lease

This was an appeal to the Court of Appeal from a trial judgment dismissing a counterclaim by a former employer. The employer counterclaimed against two former employees, alleging breach of fiduciary duty after the employees negotiated a lease for the employer's premises behind its back. The trial judge found the claim statute-barred but stated that if it wasn't, she would have found a breach of fiduciary duty. The Court of Appeal upheld the trial judge's finding that the claim was statute-barred and dismissed the appeal.

fiduciary duties limitation periods breach of contract mitigation of damages appellate review

M. v Motion Industries (Canada) Inc.

2014 ONSC 7556 (CanLII) · 2014-03-12

Constructive Dismissal: 16 Months Notice for Role Change

This constructive dismissal case involved a project manager whose role was fundamentally altered to an outside sales representative upon recall from lay-off. The court determined that the plaintiff was entitled to treat the employment as terminated due to the employer's failure to offer a comparable position and was not obligated to mitigate damages by accepting the ill-defined role. A sixteen-month notice period was awarded, with damages calculated based on lost commissions.

constructive dismissal damages in lieu of notice fundamental change mitigation of damages reasonable notice

D. v. Great West Life Assurance Co. et al.

2014 ONSC 389 (CanLII) · 2014-01-29

Disability Benefits: Employer Obligations & Mitigation

This case addresses the employer's obligations under an employee benefit plan regarding short-term and long-term disability benefits for an employee suffering from anxiety, depression, and panic disorders. The court found that the plaintiff was disabled under the plan and that the employer failed to provide necessary supports, including rehabilitation and workplace accommodations. Additionally, the court ruled that the denial of the short-term disability claim was unjustified based on medical evidence and that the plaintiff did not fail to mitigate damages by not pursuing therapy.

disability benefits employee benefit plan employer obligations mitigation of damages

T. v. R.

2010 ONSC 1896 (CanLII) · 2010-03-30

Wrongful Dismissal: Stock Options Damages and Tax Gross-Up

A wrongful dismissal case where an employee was dismissed without cause and denied the opportunity to exercise stock options. The court is tasked with determining damages for the lost opportunity, considering valuation dates, the plaintiff’s financial circumstances, and whether the plaintiff failed to mitigate damages by purchasing equivalent shares on the open market.

damages valuation mitigation of damages stock options tax gross-up wrongful dismissal

W. v. Ritz Lutheran Villa

2010 ONSC 1867 (CanLII) · 2010-03-29

Wrongful Dismissal: 13.5-Year Employee Awarded 10 Months Notice

A wrongful dismissal case where an employee with 13.5 years of service was terminated without notice or severance for allegedly violating employer policies by accompanying a resident on a cruise. The court found the termination unjustified due to inconsistent policy application and lack of progressive discipline, awarded 10 months' notice, and calculated damages of $28,159.03 based on wages, benefits, and mitigation efforts.

good faith mitigation of damages notice period termination for cause wrongful dismissal

Q. v. Reprodux Ltd.

2010 ONSC 837 (CanLII) · 2010-02-04

Constructive Dismissal: Employee Claims Poisoned Work Environment Due to Racist and Homophobic Slurs

A constructive dismissal case where the plaintiff alleged a poisoned work environment due to racist and homophobic slurs. The court examined whether the plaintiff was constructively dismissed, whether he condoned the abusive conduct, whether his employment was continuous, and whether he adequately mitigated his damages.

condonation constructive dismissal employment continuity mitigation of damages poisoned work environment

C. v. Canac

2010 ONSC 849 (CanLII) · 2010-02-03

Wrongful Dismissal: 20-Year Supervisor Awarded 18 Months Notice

A wrongful dismissal case involving a plaintiff who was employed for 20 years as a supervisor and was terminated due to business reorganization. The court awarded 18 months of reasonable notice, applying the Bardal factors. The plaintiff was also awarded overtime compensation during the notice period, while claims for pay increases and bonuses were dismissed due to insufficient evidence.

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L. v. Dot Benefits

2010 ONSC 534 (CanLII) · 2010-01-25

Wrongful Dismissal: Clerical Employee Awarded 9.5 Months Notice

A wrongful dismissal case where a plaintiff with nine and a half years of service was terminated due to restructuring and awarded nine and a half months' salary in lieu of notice. The court also addressed the enforceability of a termination clause in the employee handbook and whether the plaintiff was entitled to both disability and severance payments.

mitigation of damages reasonable notice severance pay termination clause wrongful dismissal

C. v. Corvex Manufacturing Ltd.

2009 CanLII 28395 (ON SC) · 2009-05-08

Just Cause: Manager's Relationship With a Subordinate

A wrongful dismissal case involving a senior manager with 19 years of service who was dismissed after a consensual sexual relationship with a subordinate he supervised, following an earlier written warning that further inappropriate conduct would be grounds for termination, and insubordination. The court found just cause for termination without notice. In case that finding was overturned, it assessed reasonable notice at 18 months, reduced to six months' damages for a 12-month failure to mitigate, and held that a clause limiting damages to the ESA minimums would not have applied.

employment contract just cause mitigation of damages reasonable notice wrongful dismissal

Panimondo v. Shorewood Packaging Corporation

2009 CanLII 16744 (ON SC) · 2009-04-16

Wrongful Dismissal: Journeyman Pressman Claims 11 Months Notice

A wrongful dismissal case where a journeyman pressman with 11 years of service was terminated and received 9 ½ months’ severance, but claimed entitlement to 11 months’ notice. The court examined the reasonableness of the notice period under Bardal factors, the adequacy of the severance package, and whether the plaintiff failed to mitigate damages by delaying job search efforts.

employment standards mitigation of damages reasonable notice severance pay wrongful dismissal

Z. v. Canac Kitchens Ltd. (Kohler Ltd.)

2009 CanLII 9413 (ON SC) · 2009-03-02

Wrongful Dismissal: 16-Year Accounts Payable Clerk Awarded 13 Months Notice

A wrongful dismissal case where the plaintiff, an accounts payable clerk with 16 years of service, was dismissed without cause. The court determined a 13-month reasonable notice period based on Bardal factors and ruled on the plaintiff's duty to mitigate damages by seeking comparable employment. The plaintiff was also awarded $1,467 for replacement insurance costs during the notice period.

employment standards mitigation of damages reasonable notice severance pay wrongful dismissal

A. v. Liturgical Publications of Canada Ltd.

2009 CanLII 10667 (ON SC) · 2009-03-02

Wrongful Dismissal: 14-Year Employee Awarded 10 Months Notice

A wrongful dismissal case involving a plaintiff employed for over 14 years as a press operator, terminated without cause. The employer provided eight weeks’ pay in lieu of notice, but the plaintiff was awarded ten months’ salary in damages, applying the Bardal factors. The court also addressed the plaintiff’s efforts to mitigate damages by seeking alternative employment.

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