Limitation Periods — Ontario Employment Law
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About Limitation Periods
In Ontario employment law, time is a critical factor that can determine the success or failure of a legal claim. A 'limitation period' is a strict deadline, set by law, for starting a legal proceeding. If you miss this deadline, your right to sue can be extinguished permanently, regardless of the strength of your case. This legal principle ensures that disputes are addressed in a timely manner and provides certainty for all parties.
The primary law governing these deadlines in Ontario is the Limitations Act, 2002. For most employment-related civil claims, such as wrongful dismissal, constructive dismissal, or breach of an employment contract, the basic limitation period is two years. The crucial question is: when does this two-year clock start ticking? The law uses a concept called 'discoverability.' The clock generally starts on the day the claim is 'discovered,' which is the day a reasonable person would have known that a loss or injury occurred and that a legal proceeding would be an appropriate way to seek a remedy. For a wrongful dismissal claim, this is almost always the date of termination, as established in numerous court cases. The law presumes you discovered the claim on the day the event happened, and it is your responsibility to prove otherwise, which is very difficult.
It's vital to understand that not all claims share the same deadline. For instance, claims for discrimination or harassment filed with the Human Rights Tribunal of Ontario under the Ontario Human Rights Code (OHRC) have a much shorter limitation period of one year from the date of the incident. Similarly, claims for unpaid wages or other entitlements under the Employment Standards Act, 2000 (ESA) filed with the Ministry of Labour also have their own specific time limits. Misunderstanding which deadline applies to your situation can have devastating consequences for your legal rights. Because the calculation of a limitation period can involve nuanced legal arguments, seeking timely professional guidance is a crucial first step in protecting your interests.
Frequently Asked Questions
What is the standard limitation period for suing an employer in Ontario?
For most civil employment lawsuits, like wrongful dismissal, the standard limitation period in Ontario is two years from the date the claim was 'discovered,' as outlined in the Limitations Act, 2002.
When does the two-year clock start for a wrongful dismissal claim?
In nearly all wrongful dismissal cases, the limitation period begins on the date your employment is terminated. This is considered the day you 'discover' the loss, and the two-year countdown starts from that point.
Does negotiating a severance package pause the limitation period?
No, it does not. The two-year clock continues to run even while you are in negotiations with your former employer. This is a critical mistake many people make; you must file a claim in court before the deadline, regardless of ongoing discussions.
Is the deadline different for a human rights complaint for discrimination?
Yes. A claim for discrimination or harassment under the Ontario Human Rights Code must be filed with the Human Rights Tribunal of Ontario within one year of the last incident, a significantly shorter period than the two-year civil limit.
What happens if I miss the limitation period?
If you try to file a claim after the limitation period has expired, your claim will be considered 'statute-barred.' The employer can ask the court to dismiss your case, and the court will almost certainly do so, without even considering the merits of your claim.
Can a limitation period ever be extended in an employment case?
Extensions are extremely rare and should not be relied upon. While courts have very limited power to extend a deadline in exceptional circumstances, such as when an employer actively and fraudulently concealed the cause of action, this is a very high bar to meet.
I was just terminated. When should I see a lawyer about the deadline?
You should consult with an employment lawyer as soon as possible. A lawyer can confirm the exact limitation period for your specific situation and ensure all necessary legal steps are taken well before the deadline expires, protecting your right to seek a remedy.
Common Scenarios
- An employee is terminated and spends eight months negotiating a severance package directly with HR, not realizing the two-year limitation period to sue has been running since their last day of work.
- A marketing manager is constructively dismissed when her salary is cut by 30%, but she waits 2.5 years to file a lawsuit, wrongly believing the clock started when she finally resigned instead of when the pay cut happened.
- A worker experiences a discriminatory incident but waits 14 months to act, only to discover that the one-year limitation period to file an application at the Human Rights Tribunal of Ontario has already passed.
- An employee is terminated but is promised by their manager that they will be rehired for a new project 'in a few months,' causing them to delay legal action beyond the two-year deadline.
What You Should Know
- Immediately document the exact date of your termination or any other significant workplace incident, as this date is likely the starting point for your limitation period.
- To formally stop the clock on a limitation period for a civil claim, a Statement of Claim must be issued by the court. Simply sending a demand letter or negotiating is not enough.
- Be aware that different legal avenues have different deadlines; a civil lawsuit (2 years), a human rights application (1 year), and an ESA claim all have unique time limits.
- Do not delay in seeking legal advice. A lawyer can provide clarity on your specific deadline and prevent you from accidentally forfeiting your legal rights by waiting too long.
Featured Cases
P. v. Sky Service F.B.O. Inc.
2026 ONSC 5334 (CanLII) · 2026-09-18Wrongful Dismissal: Appeal Dismissed as Statute-Barred
The Divisional Court dismissed an appeal from a motion judge's decision granting summary judgment to the employer, ruling that the employee's wrongful dismissal claim was statute-barred. The court applied the Limitations Act, 2002, finding that the limitation period began on the date of dismissal and was not postponed by the claimant's misunderstanding of legal significance or by commencing proceedings in the wrong forum.
H. v. Human Rights Tribunal of Ontario et al.
2026 ONSC 3056 (CanLII) · 2026-05-26HRTO Judicial Review: Bias and Fairness Challenges
This is a judicial review application brought by an employee against the Human Rights Tribunal of Ontario and the respondent employer. The applicant challenged the HRTO's summary dismissal of their discrimination, harassment, and reprisal claims, alleging procedural unfairness, bias, and unreasonable limitation period findings. The Divisional Court found that the Tribunal's decisions were reasonable and that there was no evidence of bias or a breach of procedural fairness.
J. v. Human Rights Tribunal of Ontario
2026 ONSC 2832 (CanLII) · 2026-05-15HRTO Judicial Review: Refusal of Reconsideration Application
This is a judicial review application concerning the Human Rights Tribunal of Ontario's refusal to reconsider a decision in a human rights complaint related to employment dismissal. The Divisional Court found that the Tribunal's refusal to reconsider was reasonable due to the applicant's nine-month delay, and that the court should not extend the time to review the original decision given the unexplained delay and the availability of the reconsideration process.
K. v. The Independent Electricity System Operator et al.
2026 ONSC 2770 (CanLII) · 2026-05-13This is a judicial review of a Human Rights Tribunal of Ontario decision dismissing a human rights application. The Divisional Court reviewed the Tribunal's findings on jurisdiction, procedural fairness, and limitation periods, regarding whether the application was properly dismissed for lack of jurisdiction and untimeliness.
S. v. Rotalec Canada Inc.
2026 ONSC 2310 (CanLII) · 2026-04-20Employment: Leave to Amend Pleadings for Corporate Veil
This is a procedural ruling on a motion to amend pleadings in an employment law action involving constructive dismissal and unpaid commissions. The court granted leave to add corporate veil allegations against a directing mind, finding that a reasonable cause of action was disclosed and leaving limitations defences to be pleaded.
S. v. University Health Network
2026 ONSC 1208 (CanLII) · 2026-03-10This is an interlocutory procedural decision regarding a motion to amend pleadings in an employment dispute involving constructive dismissal and Human Rights Code allegations. The court applied the mandatory test under r. 26.01 of the Rules of Civil Procedure, permitting amendments that particularized the constructive dismissal claim while refusing those parts deemed statute-barred under the Limitations Act, 2002. The court allowed additional heads of damages (aggravated and punitive) as they were based on the same facts rather than new causes of action.
F. v. Newport Sports Management Inc. et al.
2026 ONSC 1373 (CanLII) · 2026-03-06Arbitration Award Upheld: Labour Relations & Fairness
This is a procedural ruling on an application to set aside an arbitration award in a closed shop labour relations context. The court addressed issues of arbitrator jurisdiction, the validity of a six-month contractual limitation period, and procedural fairness regarding the arbitrator's consideration of NHLPA information.
D. v. Human Rights Tribunal of Ontario
2025 ONSC 6496 (CanLII) · 2025-11-20Judicial Review: HRTO Limitation Period & Intervenor Status
This is a judicial review proceeding concerning the Human Rights Tribunal of Ontario's dismissal of claims as out of time under section 34 of the Human Rights Code. The Divisional Court addressed motions for leave to intervene by the York University Staff Association and the Black Legal Action Centre, dismissing both motions as the proposed intervenors did not meet the criteria for added parties or friends of the court.
P. v. Sky Service
2025 ONSC 6143 (CanLII) · 2025-10-31Wrongful Dismissal: Claim Dismissed as Statute-Barred
This is a summary judgment motion in a wrongful dismissal case where the plaintiff's claim was dismissed as statute-barred under the Limitations Act, 2002. The court applied the discoverability doctrine and rejected the plaintiff's argument that a subjective misunderstanding of the termination facts postponed the limitation period, finding that the limitation period began on the date of termination.
B. v. Waypoint Centre for Mental Health Care
2025 ONCA 722 (CanLII) · 2025-10-21Wrongful Dismissal: Claim Dismissed as Statute-Barred
This is an appeal from a decision dismissing a wrongful dismissal claim as statute-barred. The appellant, a former temporary acting manager, alleged wrongful dismissal after being reassigned to a less senior role but commenced the claim after the two-year limitation period had expired. The Court of Appeal for Ontario held that the limitation period began running on September 14, 2020, after the suspension under the Emergency Management and Civil Protection Act ended, and that the claim filed outside this period was barred.
D. v. D.M. et al.
2025 ONSC 4486 (CanLII) · 2025-07-31Limitation Periods: Addition of Defendants in Wrongful Dismissal
This is a procedural appeal from a Small Claims Court decision regarding the addition of a corporate defendant after the expiration of the two-year limitation period under the Limitations Act, 2002. The court addressed whether the limitation period was discoverable at the time of wrongful termination and whether claims for unpaid vacation pay were barred by the limitation period.
Total Meter Services Inc. v. GVM Integration
2025 ONCA 321 (CanLII) · 2025-04-29Former Employee Liable for Breach of Confidence and Duty
This was an appeal to the Court of Appeal from a trial decision about a former employee's breach of fiduciary duty and confidence. The employee formed a competing business and used the employer's source code and confidential information. The trial judge found the employee liable and awarded $750,000 in disgorgement of profits. The Court of Appeal upheld the liability finding but allowed the appeal in part because one of the claims added by amendment (the "TCS Opportunities claim") was a new cause of action and statute-barred under the Limitations Act. The damages were reduced to $518,659.26.
E. v. Rogers Communications
2025 ONCA 336 (CanLII) · 2025-04-29E. v. Rogers: Appeal on Tort of Discrimination
This is a motion to the Court of Appeal from a single judge's order regarding the inclusion of oral argument transcripts in appeal materials. The self-represented appellant sued Rogers Communications for an alleged tort of discrimination arising from 2015 job interviews, but a judge dismissed his action on summary judgment. A single judge of the Court of Appeal denied the appellant's request to include the transcript of the summary judgment hearing in his appeal, noting that legal submissions are not evidence. The Court of Appeal found no error in the single judge's decision and upheld the order because the transcript was unnecessary for a fair hearing. The motion was dismissed with $3,500 in costs awarded to the employer.
J. et al. v. G. et al.
2025 ONSC 2048 (CanLII) · 2025-04-14Union Expulsion: Limitation Periods and Pension Benefits
This is a procedural ruling regarding limitation periods in a dispute involving union expulsion and pension benefits. The court addressed whether the ultimate limitation period under the Limitation Act, 2002, barred claims that plaintiffs argued arose in 2021 but were arguably discoverable in the mid-1990s, including arguments regarding concealment and the void ab initio nature of the expulsion.
W. v. D. et al.
2025 ONSC 956 (CanLII) · 2025-02-12W. v. D.: Amending Pleadings in Employment Defamation
This is a procedural ruling regarding a plaintiff's motion to amend a Statement of Claim in an action against an employer for defamation and improper disciplinary actions. The court addressed whether to allow amendments to add parties and provide particulars for the defamation claim, and whether the claim was barred by limitation periods or the grievance process.
B. v. The Corporation of Norfolk County et al
2025 ONSC 542 (CanLII) · 2025-01-27Employment: Leave to Amend Pleadings for Human Rights Claims
This is an interlocutory motion regarding leave to amend a statement of claim in an employment dispute. The plaintiff sought to add causes of action including breaches of the Human Rights Code, intrusion upon seclusion, and defamation to existing claims of wrongful dismissal and toxic work environment. The court granted leave in part, allowing Human Rights Code claims based on the same factual matrix despite limitation period issues, but denied leave for negligent infliction of mental suffering and intentional interference with contractual relations due to insufficient material facts.
P. v. University of Windsor et al
2025 ONSC 168 (CanLII) · 2025-01-20P. v. University of Windsor: HR Claims in Civil Action
This is a civil procedure motion regarding a plaintiff's request to amend a Statement of Claim to include human rights claims and add new defendants after the Human Rights Tribunal of Ontario (HRTO) dismissed related applications. The court addressed whether the amendments introduced new causes of action, whether claims against new defendants were statute-barred by limitation periods, and costs associated with an abandoned injunction motion.
G. v. 2411363 Ontario Inc. (Ontario Health Clinics Brantford FHO Inc.)
2024 ONCA 752 (CanLII) · 2024-10-11Wrongful Dismissal: Common Employer & Limitations Appeal
The appellant appealed a motion judge's decision to dismiss her motion to amend her statement of claim to add individual respondents as common employers in a wrongful dismissal action. The motion judge found the claim against the individuals was statute-barred because the appellant knew material facts supporting the claim by her termination date in 2018, rejecting her argument that the claim was not discoverable until 2021. The Court of Appeal reviewed the application of the common employer doctrine, the discoverability principle under the Limitations Act, 2002, and the assessment of affidavit evidence.
Ontario (Ministry of Labour, Immigration, Training and Skills Development) v. A & L Hammer Workforce Management Inc.
2024 ONCJ 408 (CanLII) · 2024-08-22Employment Standards: Continuing Offences & Limitation Periods
This is a procedural ruling in a prosecution brought by the Ministry of Labour against an employer for failing to comply with orders under the Employment Standards Act and the Employment Protection for Foreign Nationals Act. The court addressed whether the charges were barred by limitation periods, determining that the offences were continuing and that the application to quash the charges should be heard on its merits despite being brought late.
C. v. Times Kitchen
2024 ONSC 2384 (CanLII) · 2024-04-22This is a procedural or substantive ruling concerning limitation periods and the discoverability rule in the context of a workplace accident. The case addresses the conflict between the Limitations Act, 2002 and the Workplace Safety and Insurance Act, 1997, specifically regarding reasonable accommodation and the statutory bar on civil suits for workplace injuries.