Ontario Court of Appeal (ONCA) Precedent Overview: 5,034 Decisions Analyzed

May 8, 2026 by 3mpwrApp Research

TL;DR

5,034 ONCA decisions analyzed from 2020-2026 show the court’s primary role as a precedent and procedural engine, not a tribunal outcomes tracker. Zero direct workplace injury appeals (WSIAT → Divisional Court → ONCA) found in the entire dataset confirms ONCA should be used for appellate standards, not success rates.

What ONCA Is (And Isn’t)

What ONCA Is (And Isn’t)

ONCA = Ontario Court of Appeal

The Ontario Court of Appeal is not a tribunal success-rate dataset. It’s a precedent and procedure dataset.

**Important:** These numbers describe volume and decision-type patterns in the collected ONCA sample. They are **not** a merits-based win/loss rate for workplace-injury claims.

What ONCA Is Useful For:

✅ Standards of review - Legal tests for reviewing tribunal decisions
✅ Extensions of time - Timeline and procedural requirements
✅ Leave motions - Whether appeals can proceed
✅ Costs disputes - Who pays legal costs
✅ Remittals and new hearing orders - When cases go back to lower courts/tribunals

What ONCA Is NOT Useful For:

❌ Tribunal success rates (use WSIAT, HRTO, ONSBT data instead)
❌ First-level appeal outcomes (that’s tribunal layer)
❌ Direct comparison to tribunal win/loss statistics

The Numbers: 5,034 Decisions (2020-2026)

Outcome Breakdown (All Years)

The Numbers: 5,034 Decisions (2020-2026)

Outcome Breakdown (All Years)

Outcome Type Cases % of Total What It Means
Unknown/Procedural 2,926 58.1% Outcome not classified or procedural only
Appeal Dismissed 1,023 20.3% Lower court/tribunal decision upheld
Costs Decision 590 11.7% Decisions about who pays legal fees
Appeal Allowed 156 3.1% Lower court/tribunal decision overturned
Motion/Interlocutory 124 2.5% Pre-hearing procedural decisions
New Trial/Hearing Ordered 85 1.7% Case sent back for new hearing
Remitted to Lower Court 49 1.0% Sent back to lower court/tribunal
Leave to Appeal Granted 32 0.6% Permission to appeal granted
Leave to Appeal Refused 26 0.5% Permission to appeal denied
Settled/Discontinued 23 0.5% Case settled or withdrawn

Total: 5,034 decisions

### Key Finding **Zero direct workplace injury appeals** found in 5,034 decisions analyzed. One case involving an occupational therapy company (*Sokoloff v. Tru-Path*, 2020 ONCA 730) appeared in keyword searches but was actually a defamation dispute, not a WSIAT appeal. This confirms ONCA is a **precedent layer**, not a workplace injury appeals database.

Year-by-Year Volume

Year-by-Year Volume

Year Decisions Direct Worker Appeals Top Outcome Type
2020 840 0 Unknown (61.4%)
2021 924 0 Unknown (61.4%)
2022 890 0 Unknown (59.7%)
2023 849 0 Unknown (55.1%)
2024 314 0 Unknown (47.8%)
2025 896 0 Unknown (69.1%)
2026 321 0 Appeal Dismissed (50.2%)

Note: One 2020 case (Sokoloff v. Tru-Path, 2020 ONCA 730) appeared in keyword searches but was a defamation case involving an occupational therapy company, not a WSIAT appeal.

Pattern: High-volume appellate docket with a dip in 2024 and rebound in 2025. The 2026 data shows a shift toward more classified outcomes (50.2% dismissals vs. 23.4% unknown).

Appeal Success vs. Dismissal Rates

Among classified appeal outcomes (excluding Unknown, Costs, Motions, Leave decisions):

Year Appeals Allowed Appeals Dismissed Success Rate
2020 23 142 13.9%
2021 22 155 12.4%
2022 20 182 9.9%
2023 29 201 12.6%
2024 15 89 14.4%
2025 13 93 12.3%
2026 34 161 17.4%
Total 156 1,023 13.2%
**What this means:** When ONCA makes a merits-based appeal decision, **13.2% are allowed** (appellant wins) and **86.8% are dismissed** (lower court/tribunal upheld). **Important context:** This is NOT a tribunal success rate. This is the success rate of appealing a lower court or tribunal decision to ONCA.

Appeals Dismissed (Lower Court/Tribunal Upheld)

Year Cases % of Year
2020 142 16.9%
2021 155 16.8%
2022 182 20.4%
2023 201 23.7%
2024 89 28.3%
2025 93 10.4%
2026 161 50.2%

Trend: Dismissal rate increasing over time, with 2026 showing sharp rise (likely due to more complete classification in recent data).

Costs Decisions

Year Cases % of Year
2020 104 12.4%
2021 107 11.6%
2022 100 11.2%
2023 96 11.3%
2024 34 10.8%
2025 122 13.6%
2026 27 8.4%

Pattern: Costs decisions consistently 10-14% of annual volume, showing steady volume of fee disputes.

Disability & Discrimination Cases: The Other ONCA Pathway

ONCA DOES Have Cases Relevant to Injured Workers

While zero direct workplace injury appeals (WSIAT → Divisional Court → ONCA) exist in the dataset, ONCA does have disability and discrimination cases relevant to injured workers, and persons with disabilities through alternative legal pathways:

**Key insight:** Injured workers, and persons with disabilities may reach ONCA through Human Rights Tribunal appeals, long-term disability insurance disputes, and accessibility litigation—not just workplace injury compensation appeals.

Concrete Examples: Actual ONCA Cases (2020)

1. Longueépée v. University of Waterloo (2020 ONCA 830)

Issue: Duty to accommodate student with disabilities in university admissions
Facts: Applicant denied admission based on grades achieved without accommodations for disabilities
Outcome: Remitted to HRTO (Human Rights Tribunal of Ontario)
Why it matters: Establishes that institutions must accommodate disabilities in admissions/hiring processes, not just rely on unaccommodated performance
CanLII: https://canlii.ca/t/jc99k

2. Nelson v. Ontario (2020 ONCA 751)

Issue: Gender and racial discrimination in workplace (HRTO concurrent jurisdiction with labour arbitrator)
Facts: Employment disputes under collective agreements with discrimination claims
Outcome: Confirmed HRTO’s concurrent authority for workplace discrimination
Why it matters: Workers can pursue Human Rights Tribunal remedies even when collective agreements exist
CanLII: https://canlii.ca/t/jbvmg

3. Burns v. RBC Life Insurance Company (2020 ONCA 347)

Issue: Long-term disability (LTD) benefits termination—bad faith and negligence
Facts: Plaintiff alleged insurer and employees acted in bad faith terminating LTD benefits
Outcome: Costs decision (legal fees dispute)
Why it matters: Sets precedent for personal liability of insurer employees in LTD benefit terminations
CanLII: https://canlii.ca/t/j81vp

4. Krukowski v. Aviva Insurance Company of Canada (2020 ONCA 631)

Issue: Settlement approval for person with catastrophic injuries—legal fees
Facts: $1.2 million settlement, legal fees reduced from 15% to 5% ($60,000)
Outcome: Costs decision upheld fee reduction
Why it matters: Court protects persons under disability from excessive legal fees (Rule 7.08)
CanLII: https://canlii.ca/t/jb003

5. Clarke v. Sun Life Assurance Company of Canada (2020 ONCA 11)

Issue: Long-term disability benefits limitation periods
Facts: Insurer ceased “own occupation” benefits (2013), denied “any occupation” benefits (2014), insured delayed providing medical evidence for 3 years
Outcome: Summary judgment denied—insufficient record required trial
Why it matters: Establishes when limitation period begins for LTD claims (discoverability principles under Limitations Act)
CanLII: https://canlii.ca/t/j4g0n

6. R. v. Sharma (2020 ONCA 478) — Charter Section 15 Equality Rights

Issue: Aboriginal offenders and conditional sentencing (Charter s.15 equality rights)
Facts: Challenged Criminal Code provisions precluding conditional sentences for certain offences
Outcome: Provisions found to violate Charter s.15 (systemic discrimination)
Why it matters: Addresses overincarceration and systemic disadvantage of vulnerable populations
CanLII: https://canlii.ca/t/j8tgz

How Injured Workers Reach ONCA (Non-WSIAT Pathways)

Pathway Starting Point Example Issues
Human Rights Tribunal HRTO → Divisional Court → ONCA Duty to accommodate, disability discrimination, accessibility violations
Disability Insurance Civil court action → Court of Appeal → ONCA Long-term disability benefit terminations, bad faith claims, limitation periods
Capacity to Litigate Civil procedure (Rules 7.04, 7.08, 37.16) Persons under disability, settlement approvals, litigation guardianship
Charter Challenges Trial court → Court of Appeal → ONCA Section 15 equality rights, section 7 fundamental justice
CPP Disability Social Security Tribunal → Federal Court → ONCA (rare) Canada Pension Plan disability benefits
**Practical takeaway:** If you're an injured worker, persons with disabilities, dealing with: - Disability discrimination (employment, housing, services) - Long-term disability insurance disputes - Catastrophic injury settlements - Capacity to manage your own legal case ...you may find relevant ONCA precedents even though direct WSIAT appeals don't exist.

What This Means

What This Means

🎯 When to Use ONCA Data

✅ Use ONCA when you need:

  • Legal standards and tests for reviewing tribunal decisions
  • Precedent on procedural issues (extensions of time, leave requirements)
  • Examples of how courts analyze tribunal reasoning
  • Standards of review (correctness, reasonableness, etc.)
  • Cost award principles

❌ Don’t use ONCA for:

  • Tribunal success rates (that’s WSIAT, HRTO, ONSBT data)
  • First-level appeal strategies (that’s tribunal layer)
  • Worker injury case outcomes (only 1 case in 5,034 decisions)

📊 Context: ONCA vs. Tribunals

Source Cases Success Rate Context
ONCA 5,034 13.2% appeal success (upper appellate layer)
WSIAT 98,992 73.5% grant rate in classified decisions (tribunal layer)
HRTO 62,093 12.7% success rate (tribunal layer)
ONSBT 11,752 47.2% grant rate (tribunal layer)

Key difference: ONCA is the layer ABOVE tribunals. If you lose at WSIAT, you might appeal to Divisional Court, then to ONCA. The 13.2% success rate reflects how difficult it is to overturn a lower court or tribunal decision at the appellate level.

How to Use ONCA in Your Case

Step 1: Start at the Tribunal Level

Most workplace injury/illness/disability cases start at WSIAT, HRTO, or ONSBT:

  1. File your initial appeal/application at the tribunal
  2. Use tribunal-specific templates and guides
  3. Review tribunal precedents (not ONCA yet)

Step 2: When ONCA Becomes Relevant

ONCA precedents become useful when:

  • You’re appealing a tribunal decision to Divisional Court
  • You need to understand judicial review standards
  • You’re arguing procedural fairness issues
  • You’re dealing with jurisdictional questions

Step 3: Finding Relevant ONCA Precedents

Search by:

  • Standards of review (reasonableness, correctness)
  • Procedural fairness
  • Extensions of time
  • Leave requirements
  • Tribunal-specific keywords (WSIAT, HRTO, ONSBT)

Practical Examples

Example 1: Extension of Time

Scenario: You missed the deadline to appeal your WSIAT decision.

ONCA relevance:

  • ONCA has precedents on extension of time criteria
  • Search for: “extension of time” + “WSIAT” or “tribunal”
  • Look for factors courts consider (delay length, explanation, merits, prejudice)

Example 2: Standard of Review

Scenario: Your WSIAT decision is being reviewed by Divisional Court.

ONCA relevance:

  • ONCA sets standards for reviewing tribunal decisions
  • Look for: “standard of review” + “reasonableness” + “tribunal”
  • Understand when courts defer to tribunal expertise vs. intervene

Example 3: Costs

Scenario: You won your appeal but opponent won’t pay costs.

ONCA relevance:

  • ONCA costs decisions show principles for fee awards
  • Search: “costs” + “successful party” + criteria
  • Understand when costs follow the event vs. exceptions

Key Takeaways

Key Takeaways

  1. ONCA is a precedent engine, not a success-rate database
    • Zero direct workplace injury appeals in 5,034 decisions
    • 58.1% of outcomes are unknown/procedural
    • 13.2% appeal success rate (among classified decisions)
  2. Use ONCA for legal standards, not tribunal outcomes
    • Standards of review
    • Procedural requirements
    • Appellate-level legal tests
  3. ONCA is the layer ABOVE tribunals
    • Tribunals (WSIAT, HRTO, ONSBT) → Divisional Court → ONCA
    • Most workplace injury cases never reach ONCA
    • Use tribunal data for success rate analysis
  4. The data shows typical appellate patterns
    • High dismissal rate (86.8% of appeals dismissed)
    • Significant costs decision volume (11.7%)
    • Consistent procedural motion activity (2.5%)

Data Sources & Methodology

Dataset: 5,034 Ontario Court of Appeal decisions (2020-2026)
Source: CanLII ONCA Database
Scrape Date: May 8, 2026
Worker Injury Cases: 1 (0.02% of dataset)

Outcome Classification:

  • Automated keyword analysis of decision text
  • Manual verification for worker injury cases
  • Unknown category includes decisions without clear outcome classification

Limitations:

  • 58.1% of decisions have unknown/unclassified outcomes
  • Only captures publicly available decisions on CanLII
  • Not all ONCA decisions may be published online

Share This Research

5,034 ONCA decisions analyzed. Zero direct workplace injury appeals found. Use ONCA for precedents, not success rates.

Related Research & Resources

Related Research & Resources

📚 ONCA-Specific Resources

⚖️ Tribunal-Level Analysis (Start Here for Success Rates)

🔧 Practical Guides

📊 Data & Visualizations

Research Team: 3mpwrApp Data Investigation Team
Published: May 8, 2026
Dataset: 5,034 ONCA decisions (2020-2026)
License: CC BY 4.0 (Attribution required for reuse)
Last Updated: May 08, 2026