Tort Law · Tort Law

CA — Tort Law — Quiz 1

Canadian tort law — negligence, duty of care, and the SCC's Anns/Cooper framework.

6 questions · 12 min

1.
Arjun is a registered securities dealer regulated by a provincial securities commission. He suffers financial losses when the commission negligently fails to suspend a fraudulent broker who subsequently steals his invested funds. Arjun sues the commission in negligence. Applying the Anns/Cooper framework, which analysis is MOST determinative of whether a prima facie duty of care exists at Stage 1?
2.
Carla slips and falls on an icy walkway outside a grocery store and suffers a broken wrist. The store manager knew about the ice for three hours before the accident but took no steps to treat it. The store argues the applicable standard of care merely required that they have a general inspection policy, and that no specific response was mandated until a formal report was filed. Which statement BEST describes how courts assess the standard of care in this situation?
3.
During a rugby match, Leon, a player, tackles an opponent, Sam, using a technique that was within the rules of the game but executed with slightly more force than strictly necessary. Sam suffers a dislocated shoulder. Sam sues Leon in negligence. The trial judge must determine the standard of care applicable to Leon. Which statement is MOST accurate?
4.
A defendant negligently starts a small fire in a warehouse. Due to a freak, unprecedented wind event that no meteorologist could have predicted, the fire spreads across several city blocks and destroys a plaintiff's business located two kilometres away. The fire damage to the plaintiff's property would not have occurred without the unusual wind. The defendant concedes she started the fire negligently. On the issue of remoteness, how should a court analyze the plaintiff's claim?
5.
The City of Westmount installs a traffic signal at an intersection. Owing to a budget decision made at the city council level, the city chooses a lower-specification signal that malfunctions more frequently than a higher-spec alternative. A malfunction causes an accident injuring Priya. Priya sues the city in negligence. At Stage 2 of the Anns/Cooper framework, the city argues its decision to use the cheaper signal was a policy decision immune from negligence liability. Which analysis BEST applies?
6.
Dominique is a passenger on a train operated by TransRail Co. The train derails due to faulty track maintenance, and Dominique suffers injuries. She also has a pre-existing brittle bone condition (osteogenesis imperfecta) that causes her injuries to be far more severe than they would be for an ordinary person. TransRail concedes negligence but argues damages should be limited to what an ordinary person would have suffered. Which principle BEST governs the extent of Dominique's recovery?

Questions & answers

1. Arjun is a registered securities dealer regulated by a provincial securities commission. He suffers financial losses when the commission negligently fails to suspend a fraudulent broker who subsequently steals his invested funds. Arjun sues the commission in negligence. Applying the Anns/Cooper framework, which analysis is MOST determinative of whether a prima facie duty of care exists at Stage 1?
Answer: Whether Arjun was a reasonably foreseeable plaintiff and whether there was sufficient proximity between Arjun and the commission, including whether the commission's statutory mandate was intended to protect investors like Arjun from this type of loss.
Under the Anns/Cooper framework as articulated in Cooper v Hobart (2001) SCC 79 / [2001] 3 SCR 537, Stage 1 asks (a) whether the defendant and plaintiff are in a relationship of sufficient proximity, and (b) whether damage was a reasonably foreseeable consequence. Proximity is assessed by examining all relevant circumstances, including the nature of the statutory duty, the class of persons the statute intended to protect, and whether the parties' relationship has the necessary closeness. Option B correctly identifies both elements. Option A is wrong because a public law duty does not automatically generate private law liability — Cooper v Hobart expressly held that the commission's duty to the public at large did not create proximity with individual investors. Option C imposes too high a threshold (actual knowledge is not required at Stage 1). Option D is wrong because the policy/operational distinction enters at Stage 2 (residual policy considerations), not Stage 1, and it is not categorical. Option E is wrong; an individual plaintiff can have proximity with a regulator in the right circumstances.
2. Carla slips and falls on an icy walkway outside a grocery store and suffers a broken wrist. The store manager knew about the ice for three hours before the accident but took no steps to treat it. The store argues the applicable standard of care merely required that they have a general inspection policy, and that no specific response was mandated until a formal report was filed. Which statement BEST describes how courts assess the standard of care in this situation?
Answer: The standard of care is what a reasonable person in the position of the store operator would do, taking into account the known hazard, the probability of injury, the severity of potential harm, and the burden of taking precautions — the store's actual policy is evidence but not determinative.
The standard of care in negligence is objective: what would a reasonable person in the defendant's position have done? Courts consider the likelihood of harm, the gravity of potential harm, the burden of precautions, and the utility of the conduct (the 'calculus of negligence'). A defendant's own internal policy is relevant evidence of the standard but does not define it — a court may find a policy inadequate. Option A is wrong for this reason; a policy can itself be unreasonable. Option C imposes strict liability, which is not the negligence standard. Option D overstates the preemptive effect of occupiers' liability statutes; in provinces with such legislation the statute typically codifies a reasonableness standard and some common law principles continue to apply, but more importantly, the question tests the general standard of care analysis. Option E is wrong; actual or constructive knowledge of a hazard can trigger the duty to act — courts have consistently held that knowledge of a danger for a prolonged period is material to breach.
3. During a rugby match, Leon, a player, tackles an opponent, Sam, using a technique that was within the rules of the game but executed with slightly more force than strictly necessary. Sam suffers a dislocated shoulder. Sam sues Leon in negligence. The trial judge must determine the standard of care applicable to Leon. Which statement is MOST accurate?
Answer: The standard of care is modified in the context of sport: participants are taken to consent to risks inherent in the game and accept a standard of care appropriate to the sporting context, but deliberate or reckless injury that exceeds the scope of the sport can still be negligent.
Canadian courts apply a modified reasonableness standard in sporting contexts. Participants voluntarily accept the inherent risks of the sport, which affects the duty and standard of care analysis. However, conduct that is reckless or that falls outside the norms of the game — even if technically within the rules — can still ground liability. The standard is what a reasonable participant in that sport would do in the circumstances. Option A is wrong; rule compliance is highly relevant but not an absolute defence if the conduct was still unreasonable. Option C imposes strict liability, which is not the law. Option D is wrong; negligence applies to physical injuries caused on the sports field. Option E is wrong; surgeons and sports players operate under very different standards of care — the surgical standard involves a specialist's duty and consent to treatment, not the norms of an adversarial sporting contest.
4. A defendant negligently starts a small fire in a warehouse. Due to a freak, unprecedented wind event that no meteorologist could have predicted, the fire spreads across several city blocks and destroys a plaintiff's business located two kilometres away. The fire damage to the plaintiff's property would not have occurred without the unusual wind. The defendant concedes she started the fire negligently. On the issue of remoteness, how should a court analyze the plaintiff's claim?
Answer: The test for remoteness asks whether the general type of harm (fire damage/property loss) was a foreseeable consequence of negligently starting a fire; the precise manner of the harm's occurrence need not be foreseeable, so the claim may succeed if property damage from fire was foreseeable.
The remoteness test in negligence (derived from Wagon Mound (No 1) and applied in Canadian courts) asks whether the type or kind of harm was a reasonably foreseeable consequence of the defendant's negligence, not whether the precise manner of harm was foreseeable. It is entirely foreseeable that negligently starting a fire in a warehouse could spread and damage neighbouring property — that is the general type of harm. The unusual mechanism (freak wind) does not defeat the claim if the kind of harm was foreseeable. Option A is wrong; causation and remoteness are distinct inquiries — satisfying but-for does not resolve remoteness. Option B sets too strict a standard — the precise manner need not be foreseeable. Option D is wrong; the thin skull rule applies to plaintiffs with pre-existing physical or psychological vulnerabilities that make them suffer greater damage, not to the geographic proximity of a business. Option E overstates the novus actus doctrine; an unforeseeable natural event can break the chain in some cases, but where the general type of harm (fire spread) remains foreseeable, courts do not automatically apply novus actus.
5. The City of Westmount installs a traffic signal at an intersection. Owing to a budget decision made at the city council level, the city chooses a lower-specification signal that malfunctions more frequently than a higher-spec alternative. A malfunction causes an accident injuring Priya. Priya sues the city in negligence. At Stage 2 of the Anns/Cooper framework, the city argues its decision to use the cheaper signal was a policy decision immune from negligence liability. Which analysis BEST applies?
Answer: The policy/operational distinction is relevant at Stage 2: a true policy decision (e.g., a budgetary or resource-allocation decision made at a high level) may attract immunity, but the implementation of that policy — how the signal is maintained and monitored — remains subject to operational negligence scrutiny.
Cooper v Hobart (2001) SCC 79 / [2001] 3 SCR 537 confirmed the Anns two-stage test: at Stage 2, courts consider residual policy reasons that might negate or limit the duty of care, including whether the defendant's conduct constituted a protected policy decision. The policy/operational distinction — originating in Anns v Merton [1978] AC 728 and adopted in Canadian law — holds that bona fide policy decisions (resource allocation, priority-setting) are generally immune, but the operational implementation of those policies is not. The choice of a budget specification at a council level may be a policy decision; whether city workers properly maintained and monitored the installed signal is operational. Option A overclaims immunity; not every government decision is shielded. Option C is wrong; misfeasance in public office requires bad faith, which is separate from ordinary negligence. Option D mischaracterizes Stage 2 analysis — insurance is not the test. Option E is wrong; Stage 2 explicitly provides an opportunity to negate a prima facie duty on policy grounds.
6. Dominique is a passenger on a train operated by TransRail Co. The train derails due to faulty track maintenance, and Dominique suffers injuries. She also has a pre-existing brittle bone condition (osteogenesis imperfecta) that causes her injuries to be far more severe than they would be for an ordinary person. TransRail concedes negligence but argues damages should be limited to what an ordinary person would have suffered. Which principle BEST governs the extent of Dominique's recovery?
Answer: The 'thin skull' (or 'eggshell skull') rule applies: a tortfeasor must take the victim as they find them; TransRail is liable for the full extent of Dominique's injuries even if her pre-existing condition made them far more severe than foreseeable.
The thin skull (eggshell skull) rule is a foundational principle of Canadian tort law: once it is established that the type of harm was foreseeable, the defendant is liable for the full extent of the plaintiff's injuries even if those injuries are more severe than would be expected in an ordinary person due to a pre-existing vulnerability. TransRail need not have foreseen the exact extent of injury. The crumbling skull doctrine (Option D) is a distinct concept: it applies where the pre-existing condition would have independently caused the same or similar damage regardless of the tortfeasor's act — on these facts there is no suggestion Dominique's bones would have fractured without the derailment, so the crumbling skull doctrine does not apply. Option A incorrectly limits recovery to ordinary harm. Option B is wrong; the defendant's knowledge of the specific vulnerability is irrelevant to the thin skull rule's application. Option E is wrong; choosing to travel by train is not contributory negligence, and the rule does not penalise plaintiffs for existing while having a fragile constitution.

Questions & answers

1. Arjun is a registered securities dealer regulated by a provincial securities commission. He suffers financial losses when the commission negligently fails to suspend a fraudulent broker who subsequently steals his invested funds. Arjun sues the commission in negligence. Applying the Anns/Cooper framework, which analysis is MOST determinative of whether a prima facie duty of care exists at Stage 1?

Answer: Whether Arjun was a reasonably foreseeable plaintiff and whether there was sufficient proximity between Arjun and the commission, including whether the commission's statutory mandate was intended to protect investors like Arjun from this type of loss.

Under the Anns/Cooper framework as articulated in Cooper v Hobart (2001) SCC 79 / [2001] 3 SCR 537, Stage 1 asks (a) whether the defendant and plaintiff are in a relationship of sufficient proximity, and (b) whether damage was a reasonably foreseeable consequence. Proximity is assessed by examining all relevant circumstances, including the nature of the statutory duty, the class of persons the statute intended to protect, and whether the parties' relationship has the necessary closeness. Option B correctly identifies both elements. Option A is wrong because a public law duty does not automatically generate private law liability — Cooper v Hobart expressly held that the commission's duty to the public at large did not create proximity with individual investors. Option C imposes too high a threshold (actual knowledge is not required at Stage 1). Option D is wrong because the policy/operational distinction enters at Stage 2 (residual policy considerations), not Stage 1, and it is not categorical. Option E is wrong; an individual plaintiff can have proximity with a regulator in the right circumstances.

2. Carla slips and falls on an icy walkway outside a grocery store and suffers a broken wrist. The store manager knew about the ice for three hours before the accident but took no steps to treat it. The store argues the applicable standard of care merely required that they have a general inspection policy, and that no specific response was mandated until a formal report was filed. Which statement BEST describes how courts assess the standard of care in this situation?

Answer: The standard of care is what a reasonable person in the position of the store operator would do, taking into account the known hazard, the probability of injury, the severity of potential harm, and the burden of taking precautions — the store's actual policy is evidence but not determinative.

The standard of care in negligence is objective: what would a reasonable person in the defendant's position have done? Courts consider the likelihood of harm, the gravity of potential harm, the burden of precautions, and the utility of the conduct (the 'calculus of negligence'). A defendant's own internal policy is relevant evidence of the standard but does not define it — a court may find a policy inadequate. Option A is wrong for this reason; a policy can itself be unreasonable. Option C imposes strict liability, which is not the negligence standard. Option D overstates the preemptive effect of occupiers' liability statutes; in provinces with such legislation the statute typically codifies a reasonableness standard and some common law principles continue to apply, but more importantly, the question tests the general standard of care analysis. Option E is wrong; actual or constructive knowledge of a hazard can trigger the duty to act — courts have consistently held that knowledge of a danger for a prolonged period is material to breach.

3. During a rugby match, Leon, a player, tackles an opponent, Sam, using a technique that was within the rules of the game but executed with slightly more force than strictly necessary. Sam suffers a dislocated shoulder. Sam sues Leon in negligence. The trial judge must determine the standard of care applicable to Leon. Which statement is MOST accurate?

Answer: The standard of care is modified in the context of sport: participants are taken to consent to risks inherent in the game and accept a standard of care appropriate to the sporting context, but deliberate or reckless injury that exceeds the scope of the sport can still be negligent.

Canadian courts apply a modified reasonableness standard in sporting contexts. Participants voluntarily accept the inherent risks of the sport, which affects the duty and standard of care analysis. However, conduct that is reckless or that falls outside the norms of the game — even if technically within the rules — can still ground liability. The standard is what a reasonable participant in that sport would do in the circumstances. Option A is wrong; rule compliance is highly relevant but not an absolute defence if the conduct was still unreasonable. Option C imposes strict liability, which is not the law. Option D is wrong; negligence applies to physical injuries caused on the sports field. Option E is wrong; surgeons and sports players operate under very different standards of care — the surgical standard involves a specialist's duty and consent to treatment, not the norms of an adversarial sporting contest.

4. A defendant negligently starts a small fire in a warehouse. Due to a freak, unprecedented wind event that no meteorologist could have predicted, the fire spreads across several city blocks and destroys a plaintiff's business located two kilometres away. The fire damage to the plaintiff's property would not have occurred without the unusual wind. The defendant concedes she started the fire negligently. On the issue of remoteness, how should a court analyze the plaintiff's claim?

Answer: The test for remoteness asks whether the general type of harm (fire damage/property loss) was a foreseeable consequence of negligently starting a fire; the precise manner of the harm's occurrence need not be foreseeable, so the claim may succeed if property damage from fire was foreseeable.

The remoteness test in negligence (derived from Wagon Mound (No 1) and applied in Canadian courts) asks whether the type or kind of harm was a reasonably foreseeable consequence of the defendant's negligence, not whether the precise manner of harm was foreseeable. It is entirely foreseeable that negligently starting a fire in a warehouse could spread and damage neighbouring property — that is the general type of harm. The unusual mechanism (freak wind) does not defeat the claim if the kind of harm was foreseeable. Option A is wrong; causation and remoteness are distinct inquiries — satisfying but-for does not resolve remoteness. Option B sets too strict a standard — the precise manner need not be foreseeable. Option D is wrong; the thin skull rule applies to plaintiffs with pre-existing physical or psychological vulnerabilities that make them suffer greater damage, not to the geographic proximity of a business. Option E overstates the novus actus doctrine; an unforeseeable natural event can break the chain in some cases, but where the general type of harm (fire spread) remains foreseeable, courts do not automatically apply novus actus.

5. The City of Westmount installs a traffic signal at an intersection. Owing to a budget decision made at the city council level, the city chooses a lower-specification signal that malfunctions more frequently than a higher-spec alternative. A malfunction causes an accident injuring Priya. Priya sues the city in negligence. At Stage 2 of the Anns/Cooper framework, the city argues its decision to use the cheaper signal was a policy decision immune from negligence liability. Which analysis BEST applies?

Answer: The policy/operational distinction is relevant at Stage 2: a true policy decision (e.g., a budgetary or resource-allocation decision made at a high level) may attract immunity, but the implementation of that policy — how the signal is maintained and monitored — remains subject to operational negligence scrutiny.

Cooper v Hobart (2001) SCC 79 / [2001] 3 SCR 537 confirmed the Anns two-stage test: at Stage 2, courts consider residual policy reasons that might negate or limit the duty of care, including whether the defendant's conduct constituted a protected policy decision. The policy/operational distinction — originating in Anns v Merton [1978] AC 728 and adopted in Canadian law — holds that bona fide policy decisions (resource allocation, priority-setting) are generally immune, but the operational implementation of those policies is not. The choice of a budget specification at a council level may be a policy decision; whether city workers properly maintained and monitored the installed signal is operational. Option A overclaims immunity; not every government decision is shielded. Option C is wrong; misfeasance in public office requires bad faith, which is separate from ordinary negligence. Option D mischaracterizes Stage 2 analysis — insurance is not the test. Option E is wrong; Stage 2 explicitly provides an opportunity to negate a prima facie duty on policy grounds.

6. Dominique is a passenger on a train operated by TransRail Co. The train derails due to faulty track maintenance, and Dominique suffers injuries. She also has a pre-existing brittle bone condition (osteogenesis imperfecta) that causes her injuries to be far more severe than they would be for an ordinary person. TransRail concedes negligence but argues damages should be limited to what an ordinary person would have suffered. Which principle BEST governs the extent of Dominique's recovery?

Answer: The 'thin skull' (or 'eggshell skull') rule applies: a tortfeasor must take the victim as they find them; TransRail is liable for the full extent of Dominique's injuries even if her pre-existing condition made them far more severe than foreseeable.

The thin skull (eggshell skull) rule is a foundational principle of Canadian tort law: once it is established that the type of harm was foreseeable, the defendant is liable for the full extent of the plaintiff's injuries even if those injuries are more severe than would be expected in an ordinary person due to a pre-existing vulnerability. TransRail need not have foreseen the exact extent of injury. The crumbling skull doctrine (Option D) is a distinct concept: it applies where the pre-existing condition would have independently caused the same or similar damage regardless of the tortfeasor's act — on these facts there is no suggestion Dominique's bones would have fractured without the derailment, so the crumbling skull doctrine does not apply. Option A incorrectly limits recovery to ordinary harm. Option B is wrong; the defendant's knowledge of the specific vulnerability is irrelevant to the thin skull rule's application. Option E is wrong; choosing to travel by train is not contributory negligence, and the rule does not penalise plaintiffs for existing while having a fragile constitution.