Medical malpractice litigation typically alleges harm caused directly by clinical action or inaction. Rogerson v Grey Bruce Regional Health Centre, 2024 ONCA 303, is doctrinally distinctive because the alleged harm was caused by a third party. The plaintiffs’ theory was that two physicians had a statutory duty to report concerns about a mother to the Children’s Aid Society and that, had they reported, the protective intervention that would have followed would have prevented the assault that ultimately caused the child’s catastrophic brain injury. The trial judge dismissed the action. The Court of Appeal for Ontario affirmed.
The case engages the duty to report under section 72 of the Child and Family Services Act, RSO 1990, c. C.11 (CFSA) — a duty that continues, in materially similar form, under section 125 of the Child, Youth and Family Services Act, 2017, SO 2017, c. 14, Sched. 1 (CYFSA). It engages the multi-step causation chain that operates in mandatory reporting cases. It engages the Housen v Nikolaisen, 2002 SCC 33, standard of appellate review. And it engages, somberly, the boundary between tragedy and malpractice — the principle that not every catastrophic injury, however devastating, is one for which a physician can be held liable.
This is a difficult case. The injured child was sixteen days old at the time of the assault. The damages were agreed at more than thirteen million dollars. The mother had a history of mental health issues. The hope of the plaintiffs was that the medical system might have prevented what occurred. The trial court and the Court of Appeal concluded that, on the evidence before them, it could not have.
The clinical and factual context
The infant child was born and discharged into the care of his mother. At the time of the events, the mother was a patient of Dr. Savaria, a family physician who had seen the mother and child together on several occasions. The mother had a history of mental health issues that was documented in Dr. Savaria’s records.
On December 17, 2007, Dr. Savaria referred the infant to Dr. Nwebube, a pediatrician, for assessment of weight gain. Dr. Nwebube examined the child on the same day. The clinical observations recorded by Dr. Nwebube included:
- The child was gaining weight steadily
- The parents appeared attentive in their care
- The parents proactively inquired about additional support at home
Dr. Nwebube did not have child protection concerns at the time of the December 17 assessment and made no report to the Children’s Aid Society. Dr. Savaria likewise did not report.
On December 18, 2007 — the day after Dr. Nwebube’s assessment — the mother inflicted the assault that caused the child’s catastrophic brain injury. The mother’s mental health, the immediate circumstances of the assault, and the family situation as it had presented in the medical record came together in a way that ended in irreversible harm to a child only sixteen days old.
The civil action that followed alleged that the physicians had failed in their duty to report concerns about the mother to the Children’s Aid Society under section 72 of the CFSA, and that this failure had causally contributed to the assault.
Section 72 of the CFSA and section 125 of the CYFSA
The duty to report concerns about a child to a children’s aid society is a creature of Ontario statute. At the time of the events in Rogerson, the operative provision was section 72 of the Child and Family Services Act. The CFSA has since been replaced by the Child, Youth and Family Services Act, 2017, which carries forward the same substantive duty in section 125. The structure of the duty is materially similar between the two statutes.
The core elements:
- The duty applies to every person who has “reasonable grounds to suspect” that a child is or may be in need of protection
- The threshold is “reasonable grounds to suspect,” a deliberately low standard calibrated to encourage reporting in the face of uncertainty rather than requiring proof
- The grounds for the suspicion include risk that the child is likely to suffer physical harm from the person having charge of the child, or from that person’s failure to adequately care for, provide for, supervise, or protect the child
- The duty also extends to risks of sexual abuse or exploitation, emotional harm, abandonment, and other circumstances enumerated in the statute
- The person with reasonable grounds to suspect must “forthwith” report the suspicion and the grounds for it to a children’s aid society
- The duty applies to all persons, but a separate provision imposes heightened obligations and penalties for professionals working with children — including physicians
The duty is purposive. Children are vulnerable. The system depends on the active engagement of those in a position to observe early signs of harm. The low threshold, combined with the protection of good-faith reporters from civil and disciplinary liability, is designed to ensure that suspicions are reported even when the reporter cannot be certain that harm is occurring or imminent.
The doctrinal question in malpractice litigation invoking the framework is twofold: did the physician have reasonable grounds to suspect (the standard-of-care question); and, if they did and failed to report, did the failure cause the alleged harm (the causation question).
The trial findings
The trial judge addressed the action in stages.
Dr. Savaria’s mental health summary. The trial judge found that Dr. Savaria should have provided Dr. Nwebube with a summary of the mother’s mental health history at the time of the December 17 referral. This was a technical breach of the standard of care for interphysician communication: where a family physician refers a patient to a specialist with concerns relevant to the consultation, providing relevant historical information facilitates appropriate specialist assessment. But the trial judge found that this technical breach was non-causative — Dr. Nwebube’s assessment on December 17 would not have differed had the mental health summary been provided. The technical breach therefore could not support liability.
The reporting duty. The trial judge found that neither physician breached the s. 72 CFSA reporting duty. Dr. Nwebube’s observations on December 17 — steady weight gain, attentive parents, proactive inquiry about additional support — did not meet the “reasonable grounds to suspect” threshold. Dr. Savaria’s observations across the multiple visits with the mother and child did not, on the trial judge’s analysis, meet the threshold either. The low threshold of the CFSA was not met because the available observations did not raise the kind of suspicion the statute contemplates.
Causation, assuming breach. The trial judge addressed causation in the alternative — that is, on the assumption that the reporting duty had been breached. Even on that assumption, the trial judge found that a CAS report would not have led to a protective intervention that would have prevented the assault. The intervention that would have followed from a report (assessment, possible voluntary services, possible court-ordered intervention) would not, on the trial evidence, have reached the situation that produced the assault on December 18. Causation failed at the protective-intervention link of the chain.
The action was dismissed on all counts.
The Housen v Nikolaisen standard of review
The Court of Appeal applied the standard appellate framework from Housen v Nikolaisen, 2002 SCC 33. Errors of law are reviewed on the correctness standard. Findings of fact, credibility, and mixed questions are reviewed for palpable and overriding error. The framework substantially defers to trial judges on factual and mixed determinations; appellate intervention is reserved for errors that are both apparent on the record and consequential to the outcome.
The appellants challenged the trial judge’s reasoning on multiple grounds, including:
- The interpretation of the reasonable grounds threshold under s. 72 CFSA
- The treatment of expert evidence on the standard of care
- The factual conclusions on whether reporting would have prevented the assault
- The treatment of the technical SOC breach by Dr. Savaria
The Court of Appeal found no palpable and overriding error in any of the trial judge’s analyses. The interpretation of s. 72 was correct as a matter of law. The treatment of expert evidence was within the trial judge’s discretion. The factual conclusions on the protective intervention chain were supported by the evidence at trial. The technical SOC breach analysis was sound.
The appeal was dismissed.
The reporting duty: doctrinal framework
The s. 72 CFSA framework (continued in s. 125 CYFSA) operates on a particular doctrinal structure that bears unpacking.
The “reasonable grounds to suspect” threshold. The threshold is deliberately low. Higher thresholds — “reason to believe,” “probable cause,” “preponderance of the evidence” — would defeat the protective purpose of the statute by requiring near-certainty before triggering the duty. The “suspect” threshold recognizes that early signs of harm are often equivocal and that the cost of unreported suspicion can be catastrophic.
The threshold operates objectively, not subjectively. The question is not whether the physician personally suspected harm; it is whether a reasonable person in the physician’s position, with access to the same information, would have suspected. A physician who genuinely did not suspect harm where a reasonable person would have suspected is in breach. Conversely, a physician who actively suspected but could not articulate the reasonable grounds is in a different doctrinal position.
The “risk that the child is likely to suffer harm” standard. The grounds for suspicion must relate to the kinds of harm enumerated in the statute. Physical harm from the person having charge of the child is one category. Failure to adequately care for, provide for, supervise, or protect is another. The categories are broad but not unbounded; suspicion of harm not within the enumerated categories does not trigger the statutory duty (though it may trigger other professional obligations).
The “forthwith” reporting requirement. Once the threshold is met, the duty is to report “forthwith.” There is no doctrinal scope for delay, further investigation, or waiting to see if the situation resolves. The protective purpose of the statute requires immediate reporting so that the CAS — which has the investigative and protective authority — can act.
The personal nature of the duty. The duty applies to the person who has the reasonable grounds. Where multiple persons have the grounds, multiple persons have the duty. The statute does not allow one person to delegate to another or to assume that another will report.
In Rogerson, the trial judge found that the threshold was not met. The clinical observations did not raise reasonable grounds to suspect that the child was likely to suffer the harm the statute contemplates. The reasoning is not that the physicians should have been more vigilant in retrospect; it is that the contemporaneous evidence available to them did not support the level of suspicion the statute requires.
The multi-step causation chain
Even where a breach of the reporting duty is established, causation in mandatory reporting cases requires a multi-step analysis. Each step is a separate factual question requiring proof on a balance of probabilities. The chain typically operates as follows:
Step 1 — Would the report have been made? Where the physician failed to report, the first counterfactual question is whether a report would have been made if the standard had been met. In most cases this is straightforward (if the threshold was met, the duty was to report; presumably the physician would have complied).
Step 2 — Would the CAS have responded? A report triggers CAS investigation. The next question is what the CAS would have done with the report. This depends on the contents of the report, the agency’s resources and protocols at the time, the jurisdiction’s standard practices, and other factors.
Step 3 — What would the CAS investigation have revealed? The investigation would have collected additional information about the family situation, the parents’ capacities, the child’s safety, and other factors. The result of the investigation would shape any subsequent intervention.
Step 4 — What intervention would the CAS have ordered or arranged? Depending on the investigation, the CAS might have offered voluntary services, sought a supervision order, sought a temporary care order, sought an emergency apprehension, or determined that no intervention was warranted. Each option produces a different downstream chain.
Step 5 — Would the intervention have prevented the harm? Finally, the plaintiff must prove that the intervention that would have been ordered would have prevented the specific harm that occurred. This requires linking the protective measure to the actual mechanism of harm.
Each link must be proven on the balance of probabilities — meaning that the cumulative probability of all five steps being satisfied is much lower than the probability of any single step. A plaintiff who can establish that the first three steps would have occurred but who cannot establish step four or step five fails on causation.
In Rogerson, the trial judge found that the chain failed at step five. Even assuming all earlier steps would have been satisfied, the protective intervention that would have followed would not have prevented the assault that occurred on December 18. The reasoning rested on the specific circumstances of the family situation and on what CAS intervention typically achieves in cases of this kind. The Court of Appeal found no palpable and overriding error in this analysis.
Why causation is the binding constraint in mandatory reporting cases
The multi-step structure means that causation, not breach, is often the dispositive issue in mandatory reporting malpractice claims. Even where the reporting duty has clearly been breached, the plaintiff must prove the long chain of counterfactual events that connect the breach to the alleged harm. The proof becomes increasingly difficult as the chain extends:
- At step 1, the proof is typically straightforward
- At steps 2 and 3, the proof depends on CAS practice and resources at the relevant time
- At step 4, the proof depends on what protective options the CAS would have selected
- At step 5, the proof depends on whether the selected option would have actually prevented the specific harm
Plaintiff counsel evaluating mandatory reporting cases must work through this chain at the outset. The chain may be relatively short and tractable in some cases (acute risk situations with obvious protective responses). It will be longer and more tenuous in others (chronic risk patterns with uncertain interventions). The cases that succeed tend to have all five links clearly supported by the available evidence.
Comparison with the rest of the appellate cluster
Rogerson joins a substantial appellate cluster on this site that now spans the full spectrum of appellate outcomes in malpractice cases:
- Willick v Willard (Ont CA): affirmance of defendant judgment; deferential review
- Hanson-Tasker v Ewart (BC CA): affirmance of defendant judgment; competing experts displaced Snell
- Dumesnil v Jacob (Manitoba CA): new trial after defendant judgment; SOC error of law
- Penate v Martoglio (Ont CA): new trial after defendant judgment; jury discharge + Cojocaru copying
- Rybakov v Khattak (BC CA): affirmance of defendant judgment; expert evidence requirement
- Focken v Miller (BC CA): affirmance of defendant judgment; expert evidence incorporates risk
- Henry v Zaitlen (Ont CA): affirmance of plaintiff jury verdict; failure-to-investigate SOC framework
- Denman v Radovanovic (Ont CA): affirmance of plaintiff bench-trial liability; cumulative risks + team responsibility
- Rogerson v Grey Bruce (Ont CA): affirmance of defendant judgment; multi-step causation chain + mandatory reporting
The nine cases now cover affirmances of both defendant and plaintiff judgments, interventions on substantive error of law, interventions on procedural defects, and the spectrum of doctrinal frameworks at issue (expert evidence, causation, informed consent, jury procedure, reasons, and now mandatory reporting). The cluster is substantively comprehensive for current Canadian malpractice appellate practice.
Doctrinal lessons
The case stands for several propositions.
Mandatory reporting cases are doctrinally distinct from typical malpractice. The harm is caused by a third party. The alleged breach is failure to invoke a statutory mechanism that might have prevented the third-party harm. The doctrinal framework is the reporting statute (CFSA in 2007; now CYFSA), not the typical clinical standard of care alone.
The “reasonable grounds to suspect” threshold is low but real. The CFSA/CYFSA framework deliberately calibrates the duty to encourage reporting on uncertain information. But the threshold is not met by every situation involving a vulnerable child and a parent with mental health issues. The reporting duty depends on the specific information available to the reporter and what a reasonable person in the reporter’s position would suspect from that information.
Multi-step causation is the binding constraint in many mandatory reporting cases. Even where the reporting duty has been breached, plaintiffs must prove that the report would have led to CAS investigation, that the investigation would have led to a particular intervention, and that the intervention would have prevented the specific harm. The chain extends causation analysis well beyond typical clinical malpractice frameworks.
The “intervention wouldn’t have prevented harm” doctrine operates as a separate ground. Even on the assumption of breach and CAS response, the plaintiff must establish that the protective intervention would have reached the situation that produced the harm. Where the intervention pathway and the harm pathway diverge — where the harm was not the kind that the typical protective response would have addressed — causation fails at this final link.
Technical SOC breaches without causation are common and dispositive. Dr. Savaria’s failure to provide a mental health summary to Dr. Nwebube was a technical SOC breach, but it was non-causative because Dr. Nwebube’s assessment would have been the same. The pattern is familiar across the cluster’s many causation/SOC defeat cases.
The Housen v Nikolaisen standard of review is substantially deferential. Appellate courts will not retry factual or mixed questions on the cold record. Palpable and overriding error is a high standard. Plaintiffs seeking to reverse defendant trial judgments must identify specific, consequential errors in the trial judge’s reasoning. General disagreement with the trial outcome is insufficient.
Statutory frameworks are dynamic. The CFSA was replaced by the CYFSA in 2017. The substantive duty continues but readers must take care to engage the currently operative statute when analyzing present-day situations. The Rogerson reasoning applies to the CYFSA because the substantive duty is materially similar; but lawyers and physicians working with the framework today should anchor their analysis in s. 125 CYFSA rather than s. 72 CFSA.
Why this case matters
For prospective clients considering mandatory reporting claims. These cases face a structural challenge: the multi-step causation chain requires proof at each link, and the cumulative probability that all links will be satisfied is often substantially lower than the probability of any single link. Cases that succeed tend to involve clear breaches of the reporting duty, clear evidence of what the CAS response would have been, and clear evidence that the response would have prevented the specific harm. Where the situation involves chronic risk patterns with uncertain protective interventions, the causation analysis is particularly demanding. For more on the realistic evaluation of malpractice claims, see Suing for Medical Malpractice in Ontario: What You Need to Know and Six Common Misunderstandings About Medical Malpractice.
For plaintiff counsel. The case is a reminder that mandatory reporting claims engage the full multi-step causation chain. Counsel evaluating these cases at the outset should map out the chain explicitly:
- What information did the physician have?
- Did it meet the “reasonable grounds to suspect” threshold?
- Was a report made?
- What would have happened if a report had been made?
- What CAS response was realistic given the information that would have been provided?
- Would that response have prevented the specific harm that occurred?
Cases that have clear answers at each link will tend to succeed. Cases that depend on speculative reasoning at any link will face substantial appellate review concerns.
For defence counsel. The multi-step causation chain is the principal defence framework in mandatory reporting cases. Defence strategy should engage the chain at each link, identifying the points at which the plaintiff’s evidence is weakest. Expert evidence on what CAS protocols would have produced is often particularly important. Rogerson illustrates that even where a technical SOC breach is established, the causation chain can still defeat the claim.
For practising physicians and other regulated professionals. The case is an important reminder of the mandatory reporting framework. The threshold is low. The duty is personal and immediate. Where the clinical situation generates reasonable grounds to suspect risk of harm to a child, the duty to report applies. The reporter need not be certain; reasonable suspicion is enough. The framework operates against a backdrop of statutory protection for good-faith reporters and is designed to encourage reporting in the face of uncertainty.
It is also worth noting that the mandatory reporting framework has changed since the 2007 events in Rogerson. The CFSA was replaced by the CYFSA in 2017. The currently operative provision is section 125 of the CYFSA. The substantive duty is materially similar, but practitioners working with the framework today should anchor their analysis and any documentation in the current statute.
For more on related Ontario appellate jurisprudence on standard of care and causation, see Willick v Willard and the other cases in the appellate cluster linked above. For the contrasting plaintiff appellate affirmances in the cluster, see Henry v Zaitlen and Denman v Radovanovic.
Decision Date: April 24, 2024
Jurisdiction: Court of Appeal for Ontario
Citation: Rogerson v Grey Bruce Regional Health Centre, 2024 ONCA 303 (CanLII)
Outcome: Appeal dismissed. Trial judgment dismissing the action affirmed.
Key authorities: Child and Family Services Act, RSO 1990, c C.11, s 72 (statute at the time of the events; replaced by the CYFSA in 2017); Child, Youth and Family Services Act, 2017, SO 2017, c 14, Sched 1, s 125 (currently operative mandatory reporting provision); Housen v Nikolaisen, 2002 SCC 33 (appellate standard of review); Clements v Clements, 2012 SCC 32 (but-for causation framework)
