Actus Reus in Canada: Voluntariness, Automatism and Omissions

By Dr. Samin Mortazavi, Lawyer | Pax Law Corporation, North Vancouver and Toronto — Last updated October 11, 2026
Member of the Law Society of British Columbia and the Law Society of Ontario

1. Orientation: What This Article Does

1.1 Place in the series

Part 1 of this series established the architecture of fault: element-by-element analysis, the presumption of subjective fault, the marked-departure standard, the modified objective test, and the constitutional floor set by s. 7 of the Charter. Part 1 ended by introducing voluntariness through R v Brown, 2022 SCC 18. This Part 2 now turns to the other half of every offence: the actus reus.

The article has three parts. Part A dissects the actus reus into its components and explains why the act and the fault must coincide in time. Part B treats voluntariness as the threshold condition of any criminal act, including automatism, extreme intoxication after Brown and the 2022 version of s. 33.1. Part C examines omissions: when a failure to act can found criminal liability, which Code provisions create the necessary legal duties (ss. 215, 216, 217 and 217.1), and how those duties are carried into the general offences through s. 219(2).

2. Core Vocabulary

3. Statutory Map

The Criminal Code has no general part that defines “act” or “omission”. The rules come from three sources: the definitions of particular offences, the general duty provisions in Part VIII (ss. 215-218), and the criminal negligence definition in s. 219. The key provisions are summarized below. Read the full text in the Practitioner’s Code before continuing.

3.1 The duty provisions (“Duties Tending to Preservation of Life”)

3.2 How the duties become offences

The duty sections are not freestanding offences (apart from s. 215(2) and s. 218). They feed the general offences:

• Criminal negligence (s. 219). Every one is criminally negligent who, in doing anything, or in omitting to do anything that it is his duty to do, shows wanton or reckless disregard for the lives or safety of other persons. Section 219(2) provides that “duty” means a duty imposed by law. Penalties: s. 220 (causing death) and s. 221 (causing bodily harm).
• Manslaughter. Under s. 222(5)(a) and (b), culpable homicide includes causing death by means of an unlawful act or by criminal negligence. A s. 215 failure can be the predicate “unlawful act” for manslaughter (R v Goforth, 2022 SCC 25, reviewed in Part 1 of this series).
• Common nuisance (s. 180). Committed by doing an unlawful act or failing to discharge a legal duty, thereby endangering lives, safety or health of the public. This is the route used in Thornton.
• Specific statutory duties. Other provisions criminalize particular failures: failing to assist a peace officer when required (s. 129(b)); failing to stop after an accident (s. 320.16, which replaced former s. 252 in 2018); failing to safeguard an opening in ice or an excavation (s. 263); duty of care regarding explosives (s. 80); failing to disclose knowledge of intended treason (s. 50(1)(b)).

4. Doctrine I: Actus Reus in Canada and the Anatomy of the Act

4.1 Three kinds of external element

Every offence definition can be divided into conduct, circumstances and consequences. The value of the division is practical: it tells counsel exactly what the Crown must prove beyond a reasonable doubt, and (combined with the element-by-element approach to fault from Part 1 of this series) it tells you which mental element attaches to which external element.

Take sexual assault. The conduct is an intentional touching; the circumstances are the sexual nature of the contact and the absence of consent; there is no consequence element. Take manslaughter by unlawful act. The conduct is an unlawful act (itself an offence requiring objective dangerousness); the consequence is death; causation links them. Take failing to provide necessaries under s. 215(2)(a)(ii). The conduct is an omission; the circumstances are the relationship that creates the duty and the absence of lawful excuse; the consequence is endangerment of life or likely permanent endangerment of health.

4.2 Acts, states and status

Criminal law punishes conduct, not character. Canadian law has no true “status” offences of the kind sometimes found in older English statutes (for example, being an alien found in the country, as in R v Larsonneur (1933), a case widely cited as an example of what the law should not do). The principal Canadian state-of-affairs offence is possession, and even that is anchored in conduct: under s. 4(3) the Crown must prove knowledge and a measure of control, so the accused has in substance done something (acquired or retained the item knowingly). R v Beaver, [1957] SCR 531, confirmed that knowledge of the nature of the thing possessed is required. Possession thus satisfies the voluntariness requirement: a person who unknowingly has a package slipped into their bag has not “possessed” it.

4.3 Contemporaneity: when must act and fault meet?

The general principle is that the fault element must exist at the time of the actus reus. Rigidly applied, the principle would produce absurd acquittals; courts have developed three techniques to keep it workable.

(a) The continuing act

In Fagan v Metropolitan Police Commissioner, [1969] 1 QB 439 (Div Ct), the accused accidentally drove onto a police officer’s foot, then deliberately left the engine off and refused to move. Driving onto the foot was not an assault because it was unintentional, but the court treated the car’s presence on the foot as a continuing act, so that the later intention coincided with an ongoing actus reus. The continuing-act idea is accepted in Canadian courts and is routinely used for assault, unlawful confinement, and possession.

(b) The series of acts

In R v Cooper, [1993] 1 SCR 146, the accused strangled the victim and claimed to have blacked out partway through. Cory J for the majority held that it is not necessary that the requisite intent coincide with the entire actus reus; it is enough that the intent and the act coincide at some point, and where the death results from a series of acts forming part of the same transaction the jury may consider the whole sequence. The intent under s. 229(a)(ii) (meaning to cause bodily harm the accused knows is likely to cause death and being reckless whether death ensues) need only coincide with some part of the strangulation.

(c) Knowledge acquired mid-course

R v Williams, 2003 SCC 41, shows the principle cutting in the accused’s favour. The accused learned he was HIV-positive partway through a sexual relationship and did not disclose. Because the Crown could not prove beyond a reasonable doubt that the complainant was uninfected when the accused first acquired the knowledge, the actus reus of aggravated assault (endangerment of life) could not be shown to coincide with the culpable mental state; he was convicted only of attempted aggravated assault. Note that Parliament has not changed the general rule; the case is the cleanest modern illustration of temporal coincidence.

(d) Duty arising from the creation of danger

In R v Miller, [1983] 2 AC 161 (HL), a squatter fell asleep with a lit cigarette, woke to find the mattress smouldering, and simply moved to another room. The House of Lords held that a person who inadvertently creates a danger comes under a duty to take reasonable steps to counteract it once aware of it; failing to do so with the necessary fault is the actus reus. R v Evans, [2009] EWCA Crim 650, extended the idea to a person who supplied heroin to her half-sister and then failed to summon help. Canadian law has no general Code provision creating a “created-danger” duty. Canadian courts faced with such facts usually reason instead through the continuing-act analysis or through an express statutory duty (ss. 216, 217). Whether a created-danger duty exists at common law in Canada, and whether a common-law duty can satisfy s. 219(2), is unsettled (see section 6.6).

5. Doctrine II: Voluntariness

5.1 The principle and its constitutional status

A person cannot be convicted for conduct that was not the product of their conscious will. Voluntariness is usually described as part of the actus reus, although courts sometimes describe it as the minimal mental element underlying every offence. In R v King, [1962] SCR 746, a driver who became impaired from a dental anaesthetic, without knowing of its effects, could not be convicted of impaired driving because his impairment was not voluntarily incurred. In R v Daviault, [1994] 3 SCR 63, and again in R v Brown, 2022 SCC 18, the Supreme Court treated the requirement of voluntariness as a principle of fundamental justice under s. 7 of the Charter: convicting a person who acted involuntarily punishes the morally innocent.

Voluntariness is presumed. The Crown does not have to prove it affirmatively in every case; the accused must put it in issue, and (as explained in section 9) for automatism the accused bears more than an evidential burden.

5.2 Physical versus moral involuntariness

Two different concepts share the word “involuntary”:

• Physical (or “conscious”) involuntariness means the body moved without the person’s conscious control: a reflex, a seizure, sleepwalking, a dissociative state. There is no actus reus; the result is acquittal (or NCRMD if a disease of the mind is the cause).
• Moral involuntariness means the person consciously chose the act but had no realistic choice (Perka v The Queen, [1984] 2 SCR 232, on necessity; R v Ruzic, 2001 SCC 24, on duress). The actus reus and mens rea are present; the defence is an excuse. In Ruzic the Court recognized moral involuntariness as a principle of fundamental justice and struck the “immediacy” and “presence” requirements from s. 17. Duress and necessity will be covered in a later article in this series.

5.3 Automatism: the definition

Rabey v The Queen, [1980] 2 SCR 513, adopted the definition of automatism as unconscious, involuntary behaviour of a person who, though capable of action, is not conscious of what they are doing. Later cases emphasize that automatism need not involve total unconsciousness; what matters is impaired consciousness that leaves the person without voluntary control over their actions.

5.4 Mental disorder versus non-mental disorder automatism

The classification matters because of the verdict:

Rabey: the accused attacked a young woman after discovering she regarded him as a “nothing”. The Court (adopting Martin JA in the Ontario Court of Appeal) held that the ordinary stresses and disappointments of life do not constitute an external cause; a dissociative state they trigger points to an internal weakness and is a disease of the mind.

R v Parks, [1992] 2 SCR 871: the accused drove some 23 km while asleep and killed his mother-in-law. The uncontradicted expert evidence was that sleepwalking is not a neurological, psychiatric or other illness. The Court upheld an acquittal: on that record it was non-mental disorder automatism. La Forest J noted that the classification is a question of law to be decided case by case on the evidence, and that policy (including recurrence) informs it.

R v Stone, [1999] 2 SCR 290: the accused stabbed his wife 47 times after prolonged verbal abuse and claimed a “psychological blow” automatism. Bastarache J for the majority set out the modern framework (section 9.2), emphasizing a holistic approach to the disease-of-the-mind question that considers the internal cause theory, the continuing danger theory, and other policy factors. The trial judge’s decision to leave only mental disorder automatism was upheld; the jury convicted of manslaughter.

R v Luedecke, 2008 ONCA 716: the accused sexually assaulted a woman while in a parasomnia (sexsomnia). Doherty JA held that, applying Stone, the condition was a disease of the mind: the risk of recurrence and the public safety concerns, together with the internal source, required an NCRMD verdict rather than acquittal. The case shows that Parks is not a rule that all sleep disorders yield acquittals.

R v Bouchard-Lebrun, 2011 SCC 58: a toxic psychosis caused by voluntarily ingested drugs, which disappeared when the intoxication ended, was not a “disease of the mind” for s. 16. The self-induced intoxication rules (s. 33.1) governed instead.

5.5 Extreme intoxication: Daviault, Brown and the 2022 s. 33.1

Daviault (1994). The Court held that the common-law rule barring intoxication as a defence to general intent offences violated ss. 7 and 11(d) to the extent that it convicted an accused who was so extremely intoxicated as to be in a state akin to automatism. The accused must prove extreme intoxication on a balance of probabilities with expert evidence.

The 1995 s. 33.1. Parliament responded by enacting s. 33.1, which removed the defence of self-induced intoxication for general intent offences involving an assault or interference or threatened interference with bodily integrity, deeming the intoxicated person’s departure from the standard of care to be enough.

Brown (2022). Kasirer J for a unanimous Court held that the 1995 s. 33.1 violated ss. 7 and 11(d) and was not saved by s. 1. It substituted the fault of becoming intoxicated for the fault of the offence, and it allowed conviction without proof of voluntariness. The provision was declared of no force or effect. The companion case, R v Sullivan, 2022 SCC 19 (with R v Chan), resulted in Sullivan’s acquittal and a new trial for Chan, and settled the stare decisis effect of superior-court declarations of invalidity (section 9.5). The Court indicated that Parliament could legitimately respond, for example with a provision founded on negligent intoxication with foreseeability of harm.

The 2022 s. 33.1 (S.C. 2022, c. 11, in force 23 June 2022). Parliament replaced the section within weeks. The new structure:

• A person who, by reason of self-induced extreme intoxication, lacked the general intent or voluntariness ordinarily required, is nonetheless criminally responsible for a listed offence if all the other elements are present and the person departed markedly from the standard of care expected of a reasonable person in the circumstances with respect to the consumption of intoxicating substances (s. 33.1(1)).
• In deciding whether there was a marked departure, the court must consider the objective foreseeability of the risk that the consumption could cause extreme intoxication and lead the person to harm another person, and everything the person did to avoid that risk (s. 33.1(2)).
• “Extreme intoxication” means intoxication that renders a person incapable of consciously controlling their behaviour (s. 33.1(4)).
• The provision applies to offences that include as an element an assault or any other interference or threat of interference with the bodily integrity of another person (s. 33.1(3)).

Note what the 2022 version does: it does not deem voluntariness, it imposes a form of penal negligence at the point of intoxication, keyed to foreseeability of harm. That is exactly the kind of fault standard Part 1 of this series identified as constitutionally acceptable for non-stigma offences (Creighton, Beatty). Whether a marked-departure standard is constitutionally sufficient for offences such as sexual assault, and how a court assesses foreseeability of extreme intoxication from substances most people never expect to produce it, are live questions for appellate courts. Offences committed before 23 June 2022 are governed by Brown without the new section; a June 2025 British Columbia acquittal in a 2019 sexual assault case (reported by CBC News) is an example of that transitional window.

6. Doctrine III: Omissions and Legal Duties

6.1 The general rule

Canadian criminal law, like the common law generally, does not impose a general duty to help others. A bystander who watches a stranger drown, and could rescue at no risk, commits no Code offence. Liability for omission requires (1) an offence whose definition can be committed by omission, and (2) a legal duty to act that the accused failed to perform.

The reasons usually given for the rule are respect for individual liberty, the difficulty of drawing lines (who among many bystanders is liable?), causal difficulty (did the omission “cause” the death?), and the principle of legality (people should be able to know in advance what the law requires of them). Critics answer that a narrow duty of “easy rescue” would raise none of these concerns; see section 10.

6.2 Moore v The Queen: the legality principle

In Moore v The Queen, [1979] 1 SCR 195, a cyclist went through a red light and refused to give his name to the officer who stopped him. He was convicted of wilfully obstructing a peace officer in the execution of duty. The majority (Spence J) held that, because the officer had a duty to enforce the traffic law and could only do so by identifying the offender, the cyclist’s refusal to identify himself amounted to obstruction. Dickson J (Laskin CJ and Estey J concurring) dissented, holding that the criminal law should not impose a duty to act unless a statute clearly creates one, and that no statute obliged the cyclist to identify himself. The dissent is widely regarded as the better statement of principle and is regularly cited for the proposition that duties grounding criminal liability must be clear and found in law, not invented by courts after the fact. The majority result is best read narrowly, as confined to its facts.

6.3 Section 215: necessaries of life

What are “necessaries”? The term is undefined. Courts include food, shelter, clothing, care and medical attention necessary to sustain life, and protection from harm.

Who owes the duty? Parents and others in a parental role (for a child under 16), spouses and common-law partners, and anyone who has another person “under his charge” where that person cannot withdraw from that charge and cannot provide for themselves.

R v Popen (1981), 60 CCC (2d) 232 (Ont CA): a parent’s duty includes taking reasonable steps to protect a child from harm by another person, including the other parent. A parent who stands by while a partner abuses the child can be liable.

R v Peterson (2005), 201 CCC (3d) 220 (Ont CA): an adult son let his elderly father, who suffered from dementia, live in squalor in the son’s home. Borins JA held that “charge” connotes a relationship of care or control, and the inquiry is factual; the father’s dementia was an “other cause” that left him unable to withdraw from the son’s charge. The conviction was upheld. The case is important for adult children and other informal caregivers of vulnerable adults, a growing category of prosecutions.

R v Naglik, [1993] 3 SCR 122: the fault standard for s. 215 is objective: a marked departure from the conduct of a reasonably prudent person (for example, a reasonably prudent parent) in circumstances where it was objectively foreseeable that the failure would endanger life or cause permanent injury. The Ontario Court of Appeal’s subjective standard was rejected.

R v Stephan, 2018 SCC 21: parents treated their toddler’s bacterial meningitis with home remedies; the child died. The Supreme Court, in brief oral reasons, ordered a new trial because the jury charge did not adequately explain the marked-departure standard. The parents were acquitted at the retrial. The case is a reminder that the s. 215 standard is demanding and must be carefully explained.

R v Goforth, 2022 SCC 25 (Part 1 of this series): s. 215 was the predicate for manslaughter. Personal characteristics short of incapacity to appreciate the risk are irrelevant to the objective standard, and the jury must be told how the evidence relates to the marked-departure question.

“Without lawful excuse.” The offence requires that the failure be without lawful excuse. Genuine inability (for example, poverty with no access to resources, as distinct from refusal to seek available help) can be a lawful excuse. Religious or philosophical belief in alternative medicine is not, on its own, a lawful excuse for failing to obtain necessary medical care for a child.

6.4 Section 216: undertaking dangerous acts

R v Thornton, [1993] 2 SCR 445: the accused, who knew he had tested positive for HIV antibodies and was in a high-risk group, donated blood to the Red Cross without disclosure. He was charged with common nuisance under s. 180, which requires failing to discharge a legal duty. The Ontario Court of Appeal found the required duty at common law (a general duty to refrain from conduct that could foreseeably injure others). Lamer CJ, for the Supreme Court, found it unnecessary to decide the common-law point: donating blood is a lawful act that may endanger life, so s. 216 imposed a duty to use reasonable knowledge, skill and care, and that duty extended to disclosing the risk. The conviction was upheld.

R v Javanmardi, 2019 SCC 54 (Part 1 of this series): a naturopath who administered an intravenous injection to a patient was under the s. 216 duty. The standard of care is that of a reasonable person in the accused’s circumstances; the conduct of a reasonable naturopath can inform the analysis, but the question is whether the conduct was a marked and substantial departure from what a reasonable person would do in those circumstances.

Section 216 is the doctrinal basis for criminal negligence prosecutions of health professionals, unlicensed practitioners and others who undertake inherently dangerous lawful activity (blasting, operating machinery for others, administering substances). Note the exception “except in cases of necessity”, which protects someone giving emergency aid beyond their competence.

6.5 Section 217: undertakings

R v Browne (1997), 33 OR (3d) 775 (CA): the deceased swallowed a bag of crack cocaine to avoid detection. The accused said he would take her to hospital, delayed, and eventually called a taxi; she died. The Crown relied on s. 217 to make him liable for criminal negligence causing death. Abella JA held that an “undertaking” under s. 217 must be more than an expression of words; it must be a commitment, generally made with binding intent, on which reliance can reasonably be said to have been placed. The words “I’ll take you to the hospital” in that context did not meet the threshold. The conviction was set aside and an acquittal entered.

Practical significance: s. 217 can capture babysitters, lifeguards, informal caregivers and volunteers who take responsibility for another person, but only where a real assumption of responsibility exists. Ask: what exactly did the accused commit to, did the other person (or others) rely on it, and was the omission dangerous to life?

6.6 Section 217.1: the Westray duty

After 26 miners died in the 1992 Westray mine explosion and the subsequent prosecutions failed, Parliament enacted Bill C-45 (S.C. 2003, c. 21, in force 31 March 2004). It added s. 217.1, which imposes on every one who undertakes, or has the authority, to direct how another person does work or performs a task a legal duty to take reasonable steps to prevent bodily harm to that person, or any other person, arising from that work or task. The same Act added s. 22.1 (organizational liability for negligence offences, attributing the conduct of representatives and the fault of senior officers), s. 22.2 (organizational liability for subjective fault offences) and sentencing factors in s. 718.21. Organizational liability is a separate article in this series; here, the focus is on the duty.

R v Kazenelson, 2018 ONCA 77: a project manager directed workers onto a swing stage with insufficient lifelines on Christmas Eve 2009; the stage collapsed, four workers died and one was seriously injured. He was convicted of four counts of criminal negligence causing death and one of criminal negligence causing bodily harm, founded on the s. 217.1 duty, and sentenced to three and a half years. The conviction and sentence were upheld. The employer, Metron Construction, had earlier pleaded guilty, and the Court of Appeal increased its fine to $750,000 (R v Metron Construction Corp, 2013 ONCA 541).

Use in practice. The provision remains seldom used. A United Steelworkers review reports that as of April 2025 there had been only twelve successful prosecutions under the Westray provisions across Canada (five in Quebec, five in Ontario, one in British Columbia, one in New Brunswick), producing convictions of seven corporations and three individuals. Explanations commonly offered are police unfamiliarity, the preference of regulators for provincial occupational health and safety prosecutions, and the high criminal negligence standard. A 2023 Quebec prosecution arising from a triple fatality at a Beauceville woodworking plant was publicly welcomed by labour groups as a sign of renewed willingness to use s. 217.1.

6.7 Other sources of duty and the s. 219(2) question

Section 219(2) says “duty imposed by law”. Three questions recur:

• Duties in other federal statutes. Duties in other federal legislation are “law” and may ground criminal negligence, subject to the fault standard.
• Provincial statutory duties. Provincial occupational health and safety statutes, child protection statutes and highway traffic statutes impose duties. Most commentators accept that a provincial statutory duty can be a “duty imposed by law” for s. 219, although courts take care that the provincial standard does not replace the criminal fault standard. In Quebec, s. 2 of the Charter of Human Rights and Freedoms imposes a duty to come to the aid of a person whose life is in peril, unless doing so involves danger to the rescuer or a third person or there is another valid reason. Whether that provincial duty grounds criminal negligence is debated and has not been authoritatively settled.
• Common-law duties. Section 9 of the Code abolishes common-law offences, but not common-law duties. The Ontario Court of Appeal in Thornton relied on a common-law duty; the Supreme Court decided the case under s. 216 without endorsing that reasoning. The Moore dissent and the principle of legality counsel caution. The safest course in argument is to anchor any duty in a statute and to treat common-law duties as contested.

7. The Fault Interface: Connecting Part 1 and Part 2

Identifying the duty answers the actus reus question. The fault question is separate, and each route carries its own standard. The table pulls together Part 1 and Part 2 of this series.

R v JF, 2008 SCC 60. A foster mother was acquitted of manslaughter predicated on failing to provide necessaries but convicted of criminal negligence causing death on the same facts. The Court held the verdicts inconsistent: criminal negligence requires a marked and substantial departure, which is a higher threshold than the marked departure of s. 215, so a jury that rejected the lower standard could not logically find the higher one. The conviction could not stand. The case fixes the hierarchy: s. 215 (marked departure) sits below criminal negligence (marked and substantial departure).

8. Case Digest

9. Procedure, Proof and Charter Issues

9.1 Burdens on voluntariness

Because voluntariness is presumed, an accused who claims automatism must do two things. First, there must be an evidentiary foundation sufficient to put the defence before the trier of fact: in practice, the accused’s testimony plus expert (usually psychiatric or sleep-medicine) evidence. Second, under Stone, the accused bears the legal (persuasive) burden of proving involuntariness on a balance of probabilities. The majority accepted that this reverse onus engages the presumption of innocence in s. 11(d) but held it justified, drawing on the reasoning in R v Chaulk, [1990] 3 SCR 1303 (s. 16 presumption of sanity) and Daviault. For mental disorder automatism, R v Fontaine, 2004 SCC 27, holds that the threshold to put the defence to the jury is an “air of reality”: evidence on which a properly instructed jury, acting reasonably, could find the defence established on a balance of probabilities.

9.2 The Stone two-step

Step 1 (judge): is there a proper foundation? The judge asks whether there is evidence on which a properly instructed jury could find, on a balance of probabilities, that the accused acted involuntarily. Relevant factors include the severity of the triggering stimulus, corroborating evidence from bystanders, medical history of dissociative states, whether there was a motive, and whether the alleged trigger was also the victim.

Step 2 (judge): mental disorder or not? The judge decides, as a question of law, whether the condition is a disease of the mind. The starting presumption is that it is. The judge applies a holistic approach: (a) the internal cause factor (would a normal person have reacted with a dissociative state to the same trigger?); (b) the continuing danger factor (likelihood of recurrence, history of violence while dissociated); (c) other policy concerns (public safety, the integrity of the justice system, ease of feigning). If the condition is a disease of the mind, only mental disorder automatism goes to the jury, and the s. 16 framework applies. If not, non-mental disorder automatism goes to the jury and a finding of involuntariness leads to acquittal.

9.3 Dispositions under Part XX.1

A verdict of NCRMD is not an acquittal. The court or Review Board must hold a disposition hearing and make the disposition that is necessary and appropriate, taking into account public safety (the paramount consideration), the accused’s mental condition, reintegration, and other needs (s. 672.54). If the accused is not a significant threat to public safety, an absolute discharge must be ordered (Winko v British Columbia (Forensic Psychiatric Institute), [1999] 2 SCR 625). In British Columbia, the BC Review Board hears subsequent reviews. This is why the classification step in Stone is so consequential: defence counsel will often prefer non-mental disorder automatism, while the Crown may argue for the NCRMD classification.

9.4 Omission prosecutions: evidence and trial points

• Proving the duty. The relationship (parent, spouse, charge, undertaking, direction of work) is an essential element and must be proved beyond a reasonable doubt. In s. 215(1)(c) and s. 217 cases this is often the main factual battleground.
• Expert evidence. Medical evidence typically establishes the endangerment element and whether timely care would have made a difference (a causation question for Part 3 of this series). In s. 216 and s. 217.1 cases, professional or industry standards are admissible to inform, but not to define, the criminal standard.
• Jury instructions. Stephan and Goforth show that appellate courts scrutinize whether the jury was told what makes a departure “marked” and how the evidence relates to it.
• Multiple counts. Where both s. 215 (or manslaughter predicated on it) and criminal negligence are charged, JF requires attention to the different thresholds to avoid inconsistent verdicts.
• Charge assessment. In British Columbia, Crown counsel apply the BC Prosecution Service charge assessment standard (substantial likelihood of conviction and public interest). Regulatory prosecutions under the Workers Compensation Act (BC) are the common alternative to s. 217.1 charges in workplace deaths.

9.5 Stare decisis and constitutional declarations (Sullivan)

R v Sullivan, 2022 SCC 19, holds that a superior court’s declaration under s. 52(1) of the Constitution Act, 1982 that a provision is unconstitutional binds lower courts in the province under vertical stare decisis, and that other superior court judges in the same province should follow it unless the Spruce Mills exceptions apply (later decision undermining it, decision per incuriam, or exigent circumstances). The declaration itself does not formally strike the provision for everyone; the binding effect flows from the ordinary rules of precedent. This procedure point will be revisited later in this series.

10. Comparative and Critical Perspectives

10.1 The duty-to-rescue debate

The common-law no-duty rule is often contrasted with civil law jurisdictions. France criminalizes the failure to assist a person in danger (non-assistance à personne en danger) where help could be given without risk, and many European states have similar provisions. In Canada, Quebec’s Charter of Human Rights and Freedoms s. 2 imposes a civil duty of rescue. The Law Reform Commission of Canada, in its 1987 Report 31 (Recodifying Criminal Law), proposed a narrow offence of failing to rescue, limited to cases of easy rescue; Parliament did not enact it.

Arguments for a general duty of easy rescue: it reflects ordinary moral expectations; it is narrow enough to be predictable; and it would capture cases that shock the public (the passive onlooker). Arguments against: liberty and the principle that criminal law should restrain harm rather than compel virtue; enforcement difficulties when many bystanders are present; causation problems; and the risk of discriminatory enforcement. A useful point: the existing statutory duties already capture most situations of real responsibility (family, charge, undertaking, professional activity, workplace direction), which weakens the case for a general duty.

10.2 Automatism and public safety

Automatism doctrine is a balance between two principles: no one should be punished for involuntary conduct, and the public must be protected from those likely to cause harm again. Critics say Stone‘s presumption that dissociation is a disease of the mind, and the reverse onus, tilt the balance too far toward public safety and make an outright acquittal very hard to obtain. Supporters answer that the NCRMD route offers protection without punishment, and that Winko ensures that only those who pose a significant threat are detained. The sexsomnia cases (Luedecke) are the sharpest illustration of the tension.

10.3 Section 33.1 after 2022

The 2022 s. 33.1 is a deliberate legislative response to the Court’s invitation in Brown. Victims’ advocates argue it is too narrow because, in practice, it will be hard for the Crown to prove foreseeability of extreme intoxication; defence advocates argue it reintroduces conviction for involuntary conduct by another name. Watch for appellate decisions on (1) the content of the marked-departure test for intoxicant consumption, and (2) a direct s. 7 challenge to the new provision.

10.4 Corporate omissions

The underuse of s. 217.1 raises a structural question: should workplace deaths be handled primarily through regulatory prosecution (strict liability, due diligence defence, Part 6 of this series) or through criminal negligence? The choice affects stigma, sentencing, and deterrence. This will be revisited with Sault Ste Marie and Wholesale Travel in Part 6 of this series.

11. Applied Problem: Working Method and Worked Hypothetical

11.1 A method for actus reus questions

• Identify the offence(s) and list the external elements (conduct, circumstances, consequences).
• Ask whether the conduct was voluntary. If automatism is raised, run the Stone two-step and identify the verdict consequence.
• If the conduct is an omission, find the legal duty: s. 215 (relationship or charge), s. 216 (dangerous lawful act), s. 217 (undertaking), s. 217.1 (direction of work), another statute. Test the facts strictly against the provision.
• Check contemporaneity: when did the fault arise, and does it coincide with some part of the actus reus?
• Move to causation (Part 3) and fault (Part 1, Parts 4-5).

11.2 Worked hypothetical

Facts. Dana, a 34-year-old, agrees with her neighbour Ravi to look after Ravi’s 78-year-old father, Mr. K, who has moderate dementia, while Ravi is abroad for three weeks. Ravi pays Dana and leaves her a medication schedule and a key. Dana visits daily for the first week, then, after starting a new job, visits only twice in the second week. In the third week, she takes a sedative prescribed to her, mixes it with wine at a party, and has no memory of the evening; witnesses say she drove to Mr. K’s house, shouted at him and pushed him, then left. Mr. K is found five days later, dehydrated and with a hip fracture. He survives with permanent mobility loss.

Analysis.

Duty. Dana’s agreement with Ravi, for payment, with the key and medication schedule, is an undertaking in the Browne sense: a clear commitment with binding intent, on which Ravi (and Mr. K) relied. Section 217 applies if omitting to perform the act is or may be dangerous to life; leaving a man with dementia without water and care plainly may be. Alternatively, s. 215(1)(c): Mr. K was arguably “under her charge” during the arrangement and, because of his dementia, unable to withdraw from that charge or provide necessaries for himself (Peterson). The Crown would likely particularize both.

Offences. Failing to provide necessaries (s. 215(2)(b): failure endangering life or likely to cause permanent injury to health); criminal negligence causing bodily harm (s. 221) based on the s. 217 or s. 215 duty; and assault (s. 266) for the push.

Fault. For s. 215, the Crown must prove a marked departure from what a reasonably prudent caregiver would do, with objective foreseeability of the risk (Naglik). Reducing visits to two a week for a dementia patient, without arranging alternative care or alerting Ravi, is a strong case. For criminal negligence, the Crown needs a marked and substantial departure (JF); whether the evidence reaches that level is a jury question and the counts must be charged consistently.

Voluntariness of the assault. Dana may claim that the sedative-wine combination produced automatism. First, is there an evidentiary foundation? She would need expert evidence that she was incapable of conscious control, not merely amnesic. If the condition resulted from self-induced intoxication, it is not a disease of the mind (Bouchard-Lebrun) and the 2022 s. 33.1 applies, because assault involves interference with bodily integrity. The question becomes whether her consumption was a marked departure from the standard of care, given the objective foreseeability that combining a prescribed sedative with alcohol could cause extreme intoxication and lead her to harm someone, and what she did to avoid the risk (s. 33.1(2)). If the pharmacy label warned against alcohol, the Crown’s position is strong. If she had no reason to foresee an interaction (compare King), the defence may succeed and she would be acquitted of assault, since s. 33.1 would not apply to an intoxication that was not self-induced in the relevant sense.

Contemporaneity and causation. The neglect is a continuing omission over the third week; fault and omission coincide throughout. Whether the fracture resulted from the push or a fall during neglect is a causation question (Part 3); it matters to which offence the bodily harm attaches.

12. Knowledge Check

Attempt each question in writing before turning to Appendix A. Questions 1-6 are short answer; questions 7-10 call for a structured paragraph.

• Q1. Identify the conduct, circumstance and consequence elements of criminal negligence causing death where the Crown relies on an omission.
• Q2. What did Cooper decide about the timing of intent, and why was the rule necessary on its facts?
• Q3. Distinguish physical involuntariness from moral involuntariness and give the legal consequence of each.
• Q4. Why does it matter whether automatism is classified as mental disorder or non-mental disorder automatism?
• Q5. State the three changes the 2022 s. 33.1 made compared with the 1995 version.
• Q6. What makes a statement an “undertaking” for s. 217 after Browne?
• Q7. A sleep-medicine expert testifies that the accused, who has had two prior episodes of violent sleepwalking, was asleep when he struck his partner. Apply Stone and the sleep cases to predict the likely verdict.
• Q8. Explain why the Moore dissent is preferred by most commentators and how it relates to s. 9 of the Code and s. 219(2).
• Q9. A site supervisor tells a junior labourer to clear debris under a suspended load and leaves for lunch. The load falls and injures the labourer. Identify the legal duty and outline the path to criminal liability for both the supervisor and the company.
• Q10. Evaluate the argument that Canada should enact a general duty of easy rescue.

13. Sources and Law Currency

13.1 Legislation

Criminal Code, RSC 1985, c C-46, ss. 2, 4(3), 9, 16, 22.1, 22.2, 33.1 (as enacted by SC 2022, c 11), 50(1)(b), 80, 129(b), 180, 215-221, 222(5), 229, 263, 266, 320.16, 672.54, 718.21. Canadian Charter of Rights and Freedoms, ss. 1, 7, 11(d). Constitution Act, 1982, s. 52(1). Charter of Human Rights and Freedoms, CQLR c C-12, s. 2. An Act to amend the Criminal Code (criminal liability of organizations), SC 2003, c 21 (Bill C-45).

13.2 Cases

Canada (SCC): Beaver [1957] SCR 531; King [1962] SCR 746; Moore [1979] 1 SCR 195; Rabey [1980] 2 SCR 513; Perka [1984] 2 SCR 232; Chaulk [1990] 3 SCR 1303; Parks [1992] 2 SCR 871; Cooper [1993] 1 SCR 146; Thornton [1993] 2 SCR 445; Naglik [1993] 3 SCR 122; Daviault [1994] 3 SCR 63; Stone [1999] 2 SCR 290; Winko [1999] 2 SCR 625; Ruzic 2001 SCC 24; Williams 2003 SCC 41; Fontaine 2004 SCC 27; JF 2008 SCC 60; Bouchard-Lebrun 2011 SCC 58; Stephan 2018 SCC 21; Javanmardi 2019 SCC 54; Brown 2022 SCC 18; Sullivan 2022 SCC 19; Goforth 2022 SCC 25.

Canada (appellate): Popen (1981) 60 CCC (2d) 232 (Ont CA); Browne (1997) 33 OR (3d) 775 (Ont CA); Peterson (2005) 201 CCC (3d) 220 (Ont CA); Luedecke 2008 ONCA 716; Metron Construction 2013 ONCA 541; Kazenelson 2018 ONCA 77.

England: Larsonneur (1933) 24 Cr App R 74; Fagan [1969] 1 QB 439; Miller [1983] 2 AC 161; Evans [2009] EWCA Crim 650.

13.3 Currency statement

Law stated as of 8 October 2026. Justice Laws consolidation of the Criminal Code current to 21 September 2026, last amended 18 July 2026 (updated from the 17 March 2026 consolidation noted in Part 1 of this series). Section 215 has a new point-in-time version from mid-2026; subss. (1)-(2) as reproduced in the current consolidation are unchanged (see the currency flag in section 3). Westray prosecution statistics: United Steelworkers, Corporate Criminal Liability: 2004-2025 (April 2025 figures). Recent automatism reporting: CBC News, 17 June 2025. Verify pinpoint paragraphs on CanLII before citing any case in written work.

13.4 Next in this series

Part 3: Causation. Smithers, Nette, Maybin, Talbot, Sarrazin, Harbottle; the s. 225-228 deeming provisions; intervening acts; causation in omission cases.

Appendix A: Model Answers

Q1. Conduct: an omission to perform a duty imposed by law (s. 219(1)-(2)), for example a s. 215 or s. 217 duty. Circumstances: the existence of the legal duty (the relationship, charge, undertaking or direction of work that creates it), and the omission occurring while the duty exists. Consequence: death of another person (s. 220), caused by the omission. Fault is separate: a marked and substantial departure showing wanton or reckless disregard for the lives or safety of others.

Q2. Cooper held that the required intent need not persist throughout the actus reus; it is enough that intent and act coincide at some point, and a series of acts forming one transaction may be considered together. The accused claimed to have blacked out during the strangulation. Without the rule, an accused could escape murder by showing loss of awareness at the moment death occurred even though he had the necessary intent during an earlier part of the same continuous attack.

Q3. Physical involuntariness means the body acted without conscious control (automatism, reflex). There is no actus reus: the result is acquittal, or NCRMD if caused by a disease of the mind. Moral involuntariness means the act was consciously willed but the accused had no realistic choice (Perka; Ruzic). The elements of the offence are present but the accused is excused by duress or necessity, if their requirements are met. Both are principles of fundamental justice under s. 7.

Q4. Non-mental disorder automatism results in an outright acquittal. Mental disorder automatism results in an NCRMD verdict under s. 16, followed by a Part XX.1 disposition that may include detention or conditions where the accused is a significant threat to public safety (Winko). The classification is a question of law for the judge under Stone, with a starting presumption that the condition is a disease of the mind.

Q5. (1) The 1995 version removed the defence by deeming fault from the fact of intoxication; the 2022 version requires proof of a marked departure from the standard of care in consuming intoxicants. (2) The 2022 version requires the court to consider objective foreseeability that consumption could cause extreme intoxication and lead to harm to another person, and any steps taken to avoid the risk. (3) It defines extreme intoxication as intoxication rendering a person incapable of consciously controlling their behaviour, aligning the provision with Brown‘s concern for voluntariness.

Q6. Under Browne, an undertaking is more than words. It is a commitment, generally made with binding intent, on which reliance can reasonably be said to have been placed. Context matters: payment, the assumption of exclusive care, and the exclusion of other help strengthen the finding; casual or conditional statements do not suffice.

Q7. Step 1: the expert evidence and the accused’s testimony likely supply the evidentiary foundation. Step 2: the judge starts from the presumption that the condition is a disease of the mind. Parks resulted in acquittal because the uncontested evidence showed no illness and a low risk of recurrence. Here, two prior violent episodes point strongly to continuing danger, which under Stone and Luedecke supports classification as a disease of the mind. The likely result, if involuntariness is proven on a balance of probabilities, is NCRMD rather than acquittal, with a Part XX.1 disposition.

Q8. Dickson J insisted that criminal liability for omissions requires a clear legal duty found in statute, not one inferred by the court after the event. That view accords with the principle of legality (fair notice), with s. 9 of the Code (no common-law offences, so courts should not create liability indirectly by inventing duties), and with s. 219(2), which requires a duty “imposed by law”. The majority’s reasoning risks expanding liability unpredictably and is generally confined to its facts.

Q9. The supervisor undertook or had authority to direct how the labourer did the work, so s. 217.1 imposes a legal duty to take reasonable steps to prevent bodily harm arising from it. Sending a worker under a suspended load and leaving is a failure to take reasonable steps. Through s. 219(2) that omission can ground criminal negligence causing bodily harm (s. 221) if it is a marked and substantial departure showing wanton or reckless disregard (Kazenelson). The company may be liable under s. 22.1 if its representative (the supervisor) was a party and the responsible senior officer departed markedly from the standard of care that could reasonably be expected to prevent the offence. A provincial occupational health and safety prosecution is the alternative or parallel route.

Q10. A strong answer presents both sides and takes a reasoned position. For: moral intuition, narrowness of an easy-rescue duty, alignment with Quebec and European models, and the 1987 Law Reform Commission proposal. Against: liberty, uncertainty about who among many bystanders is liable, causation problems, enforcement discretion, and the fact that existing statutory duties already capture most cases of real responsibility. A defensible conclusion is that any reform should be a narrow, clearly drafted offence of failing to summon help when it can be done without risk, with a modest penalty, rather than an expansion of homicide liability.

Appendix B: One-Page Review Sheet

Part 2 Review: Actus Reus, Voluntariness and Omissions

This article provides general information only and is not legal advice. Reading it does not create a lawyer-client relationship. The law may change; speak with a lawyer about your specific situation.