Introduction

This guide is for applicants who reported their injuries late because of a late onset of injuries. When an insurer wins a late-notice argument, the claim is dismissed before anyone argues about whether treatment was reasonable and necessary. But don't worry, the law(SABS) is meant to play a role in consumer protection. Clinics and providers working these files from the clinic side will find a step-by-step framework in Reporting Injuries to the Insurance Company Late: How to Beat It.

The Two Rules in Plain Terms

Reporting the accident is enough

2025 ONSC 842 (Div. Ct.) held that reporting an accident is notice under section 32(1). Once the insurer knows about the accident, it must ask whether the claimant was injured and send the application package under section 32(2). The Tribunal can no longer follow 2023 CanLII 122890 (ON LAT), which said that you must declare the injuries within 7 days.

A reasonable explanation under section 34

When notice truly is late, section 34 is the technicality. A claimant who has a "reasonable explanation" is not disentitled. 2003 ONFSCDRS 92 (CanLII) set the test:

  • The explanation must be credible before its reasonableness is assessed.
  • The onus is on the insured person.
  • Ignorance of the law alone is not a reasonable explanation.
  • The test is both subjective and objective, weighing personal characteristics against a reasonable-person standard.
  • No prejudice to the insurer does not automatically make the explanation reasonable.
  • Reasonableness balances prejudice to the insurer, hardship to the claimant, and equity.

Every case below turns on where the claimant landed on that six-factor scale.

Where Explanations Worked

1. 2025 CanLII 69508 (ON LAT)

The insurer argued that telling it about the accident and the vehicle damage within seven days was not enough, because the applicant never specifically said "accident benefits." The adjudicator disagreed and found the insurer had not met its onus to prove non-compliance. The applicant proceeded.

Lesson: reporting the accident plus the vehicle damage, inside the window, satisfies section 32(1). The insurer cannot demand the claimant use magic words.

2. 2025 CanLII 61181 (ON LAT)

The Tribunal found the applicant notified the insurer "within seven days or as soon as practicable" and was compliant. The case turned on the second half of the section 32(1) timeline: seven days is a target, not an absolute, when notice as soon as practicable is shown.

Lesson: as-soon-as-practicable is a real standard. A claimant who shows they acted promptly once able to do so is compliant even after day seven.

3. 2026 CanLII 37044 (ON LAT)

This is the strongest reasonable-explanation win in the set. The applicant's accident was October 3, 2023, and she did not notify the insurer until December 31, 2024, roughly 15 months later. She was driving a friend's car and did not realize her own policy covered her.

The adjudicator accepted that ignorance of entitlement was the true cause of the delay, not an afterthought. The applicant had significant pre-accident medical conditions, post-concussion symptoms, and cognitive difficulties documented by her nurse practitioner. She was, in the adjudicator's words, "an unsophisticated person who struggles psychologically and cognitively." The insurer showed some prejudice, but the hardship to the applicant if barred was far greater. The applicant was not barred.

Lesson: vulnerability has to be documented, and it has to explain the delay. Ignorance of entitlement, when paired with real cognitive and psychological limitations, crosses the line that bare ignorance cannot. The difference comes down to the records. The same discipline that wins documentation-heavy billing disputes wins here.

4. 2026 CanLII 62960 (ON LAT)

A minor's claim survived because the insurer's records showed it had been informed of the additional minor passengers within a month, later corroborated by a witness. The insurer could not prove non-compliance.

Lesson: the insurer's own contemporaneous records are often the claimant's best evidence. If the log shows notice, the late-notice defence collapses.

Where Explanations Failed

1. 2024 CanLII 28817 (ON LAT)

A 19-month delay, with the applicant's injuries developing within two weeks and a 216-day initial stretch left unexplained, ended in a bar. The Tribunal applied 2003 ONFSCDRS 92 (CanLII): ignorance of claim rights is not a reasonable explanation, and an unexplained gap defeats the claim.

Lesson: a long delay with no explanation for the earliest months fails. The explanation must cover the whole period, not just the part that is convenient.

2. 2026 CanLII 31456 (ON LAT)

The applicant argued a language barrier and lack of knowledge of the process. The Tribunal rejected both and drew an adverse inference from his failure to produce the property damage file and adjuster log notes he had been ordered to produce. The application was dismissed.

Lesson: a bare language-barrier argument, without evidence of actual efforts to file, fails. And refusing to produce records the Tribunal ordered invites the opposite finding.

3. 2026 CanLII 2268 (ON LAT)

Undisputed late notice, with no reasonable explanation offered. The Tribunal held the applicant statute barred and dismissed the application.

Lesson: when the delay is conceded and nothing is put forward to explain it, the result is automatic. Section 34 is a defence, not a default.

4. 2026 CanLII 6216 (ON LAT)

The Tribunal found the applicant non-compliant with section 32(1) and found no reasonable explanation for the delay. The claim stopped at the gate.

Lesson: the pattern repeats. A delay plus a bare assertion is not enough. The explanation must be credible and must actually explain the delay.

The Pattern in Four Lines

  • Reporting the accident, even for property damage, satisfies notice. The insurer must then do its job under section 32(2).
  • As-soon-as-practicable is a real standard, and the insurer's own log notes often prove it.
  • A reasonable explanation is credible only when documented and tied to the delay. Vulnerability works when the records show it; bare ignorance does not.
  • Unexplained gaps, especially the earliest months, sink the claim.

Conclusion

Late reporting is not one question. It is two. Did the claimant give notice at all, and if notice was truly late, is there a credible, documented explanation for every part of the delay? The law protects consumers from undue hardships caused when insurance deny claims. For the clinic-side workflow - what to document and when to act - see Reporting Injuries to the Insurance Company Late: How to Beat It.