Manslaughter is a
common law
Common law (also known as judicial precedent, judge-made law, or case law) is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on prece ...
legal term for
homicide
Homicide is an act in which a person causes the death of another person. A homicide requires only a Volition (psychology), volitional act, or an omission, that causes the death of another, and thus a homicide may result from Accident, accidenta ...
considered by law as less
culpable than
murder
Murder is the unlawful killing of another human without justification (jurisprudence), justification or valid excuse (legal), excuse committed with the necessary Intention (criminal law), intention as defined by the law in a specific jurisd ...
. The distinction between murder and manslaughter is sometimes said to have first been made by the ancient Athenian lawmaker
Draco in the 7th century BC.
The definition of manslaughter differs among legal
jurisdictions.
Types
Voluntary
For voluntary manslaughter, the offender had intent to kill or seriously harm, but acted "in the moment" under circumstances that could cause a reasonable person to become emotionally or mentally disturbed. There are mitigating circumstances that reduce culpability, such as when the defendant kills only with an intent to cause serious bodily harm. Voluntary manslaughter in some jurisdictions is a
lesser included offense of murder. The traditional mitigating factor was
provocation; however, others have been added in various jurisdictions.
The most common type of voluntary manslaughter occurs when a defendant is provoked to commit homicide. This is sometimes described as a
crime of passion. In most cases, the provocation must induce rage or anger in the defendant, although some cases have held that fright, terror, or desperation will suffice.
Assisted suicide
Assisted suicide is suicide committed with the aid of another person, sometimes a physician.
In some places, including parts of the United States,
assisted suicide is punishable as manslaughter.
In other countries such as Switzerland and Canada, and in some U.S. states,
as long as legal safeguards are observed, assisted suicide is legal.
Involuntary
Involuntary manslaughter is the killing of a human being without
intent of doing so, either expressed or implied. It is distinguished from voluntary manslaughter by the absence of intention. It is normally divided into two categories, constructive manslaughter and criminally negligent manslaughter.
Constructive
Constructive manslaughter is also referred to as "unlawful act" manslaughter. It is based on the doctrine of constructive malice, whereby the malicious intent inherent in the commission of a crime is considered to apply to the consequences of that crime. It occurs when someone kills, without intent, in the course of committing an unlawful act. The malice involved in the crime is transferred to the killing, resulting in a charge of manslaughter.
For example, a person who fails to stop at a red traffic light while driving a vehicle and hits someone crossing the street could be found to intend or be reckless as to assault or criminal damage (see ''DPP v Newbury''). There is no intent to kill, and a resulting death would not be considered murder, but would be considered involuntary manslaughter. The accused's responsibility for causing death is constructed from the fault in committing what might have been a minor criminal act. Reckless driving or reckless handling of a potentially lethal weapon may result in a death that is deemed manslaughter. The ''DPP v Newbury'' case had redefined the meaning of murder in the Australian constitution, and reformed in order to include a ''
mens rea
In criminal law, (; Law Latin for "guilty mind") is the mental state of a defendant who is accused of committing a crime. In common law jurisdictions, most crimes require proof both of ''mens rea'' and '' actus reus'' ("guilty act") before th ...
'' assessment.
Involuntary manslaughter may be distinguished from accidental death. A person who is driving carefully, but whose car nevertheless hits a child darting out into the street, has not committed manslaughter. A person who pushes off an aggressive intoxicated person, who then falls and dies, has probably not committed manslaughter, although in some jurisdictions it may depend on whether "excessive force" was used or other factors.
As manslaughter is not defined by legislation in Australia, common law decisions provide the basis for determining whether an act resulting in death amounts to manslaughter by unlawful and dangerous act.
[.] To be found guilty of manslaughter by an unlawful and dangerous act, the accused must be shown to have committed an unlawful act which is contrary to the criminal law, and that a reasonable person in the position of the accused would have known that by their act, they were exposing the victim to an "appreciable risk of serious injury".
Criminally negligent
Criminally negligent manslaughter is variously referred to as
criminally negligent homicide in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, and
gross negligence
Gross negligence is the "lack of slight diligence or care" or "a conscious, voluntary act or omission in reckless disregard of a legal duty and of the consequences to another party." In some jurisdictions a person injured as a result of gross neg ...
manslaughter in
England and Wales
England and Wales () is one of the Law of the United Kingdom#Legal jurisdictions, three legal jurisdictions of the United Kingdom. It covers the constituent countries England and Wales and was formed by the Laws in Wales Acts 1535 and 1542. Th ...
. In
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
and some
Commonwealth of Nations
The Commonwealth of Nations, often referred to as the British Commonwealth or simply the Commonwealth, is an International organization, international association of member states of the Commonwealth of Nations, 56 member states, the vast majo ...
jurisdictions the offence of
culpable homicide might apply.
It occurs where death results from serious
negligence
Negligence ( Lat. ''negligentia'') is a failure to exercise appropriate care expected to be exercised in similar circumstances.
Within the scope of tort law, negligence pertains to harm caused by the violation of a duty of care through a neg ...
, or, in some jurisdictions, serious
recklessness. A high degree of negligence is required to warrant criminal liability.
A related concept is that of
willful blindness, which is where a defendant intentionally puts themselves in a position where they will be unaware of facts which would render them liable.
Criminally negligent manslaughter occurs where there is an omission to act when there is a duty to do so, or a failure to perform a duty owed, which leads to a death. The existence of the duty is essential because the law does not impose criminal liability for a failure to act unless a specific duty is owed to the victim. It is most common in the case of professionals who are grossly negligent in the course of their employment. An example is where a doctor fails to notice a patient's oxygen supply has disconnected and the patient dies (''
R v Adomako'' and ''R v Perreau''). Another example could be leaving a child locked in a car on a hot day.
Vehicular and intoxicated
In some jurisdictions, such as some U.S. States, there exists the specific crime of vehicular or
intoxication manslaughter. An equivalent in Canada is
causing death by criminal negligence under the
Criminal Code
A criminal code or penal code is a document that compiles all, or a significant amount of, a particular jurisdiction's criminal law. Typically a criminal code will contain offences that are recognised in the jurisdiction, penalties that might ...
, punishable by a maximum penalty of
life imprisonment
Life imprisonment is any sentence (law), sentence of imprisonment under which the convicted individual is to remain incarcerated for the rest of their natural life (or until pardoned or commuted to a fixed term). Crimes that result in life impr ...
.
On the ''
mens rea
In criminal law, (; Law Latin for "guilty mind") is the mental state of a defendant who is accused of committing a crime. In common law jurisdictions, most crimes require proof both of ''mens rea'' and '' actus reus'' ("guilty act") before th ...
'', or state of mind, or the circumstances under which the killing occurred (
mitigating factor
In criminal law, a mitigating factor, also known as an extenuating circumstance, is any information or evidence presented to the court regarding the defendant or the circumstances of the crime that might result in reduced charges or a lesser sente ...
s), manslaughter is usually broken down into two distinct categories: ''voluntary manslaughter'' and ''involuntary manslaughter''. However, this is not the case in all jurisdictions, for example, in the U.S. state of Florida.
In some jurisdictions, such as the U.K., Canada, and some Australian states,
"adequate provocation" may be a partial defense to a charge of murder, which, if accepted by the jury, would convert what might otherwise have been a murder charge into manslaughter.
National standards
Australia
In
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
, specifically
New South Wales
New South Wales (commonly abbreviated as NSW) is a States and territories of Australia, state on the Eastern states of Australia, east coast of :Australia. It borders Queensland to the north, Victoria (state), Victoria to the south, and South ...
, manslaughter is referred to, however not defined, in the
''Crimes Act 1900'' (NSW).
[ Murder and manslaughter defined.]
Manslaughter exists in two forms in New South Wales: Voluntary or Involuntary Manslaughter. In New South Wales, in cases of voluntary manslaughter, both the ''
actus reus
In criminal law, ''actus reus'' (; : ''actus rei''), Latin for "guilty act", is one of the elements normally required to prove commission of a crime in common law jurisdictions, the other being ("guilty mind"). In the United States, it is some ...
'' (literally
guilty act) and ''mens rea'' (literally
guilty mind) for murder are proven but the defendant has a partial defence, such as extreme provocation or diminished responsibility.
[ and .] In cases of involuntary manslaughter, the ''actus reus'' for murder is present but there is insufficient ''mens rea'' to establish such a charge.
In
Victoria, manslaughter is a statutory offence defined in and punishable under the
''Crimes Act 1958'' (Vic). Victoria also has occupational health and safety laws defining workplace manslaughter as negligent conduct by an employer which breaches defined duties and causes the death of a person who was owed those duties. Similar workplace manslaughter legislation exists in the
Australian Capital Territory
The Australian Capital Territory (ACT), known as the Federal Capital Territory until 1938, is an internal States and territories of Australia, territory of Australia. Canberra, the capital city of Australia, is situated within the territory, an ...
,
Queensland
Queensland ( , commonly abbreviated as Qld) is a States and territories of Australia, state in northeastern Australia, and is the second-largest and third-most populous state in Australia. It is bordered by the Northern Territory, South Austr ...
and the
Northern Territory
The Northern Territory (abbreviated as NT; known formally as the Northern Territory of Australia and informally as the Territory) is an states and territories of Australia, Australian internal territory in the central and central-northern regi ...
.
There are two categories of involuntary manslaughter at common law: manslaughter by unlawful and dangerous act and manslaughter by criminal negligence. The authority for the ''actus reus'' and ''mens rea'' of involuntary manslaughter by an unlawful and dangerous act is the High Court of Australia case of ''Wilson v R''. This case determined that the act that caused the death must breach the criminal law and that the act must carry an appreciable risk of serious injury (''actus reus''). Regarding the ''mens rea'', the court held that the accused must intend to commit the unlawful act and that a reasonable person in the position of the accused would have realised or recognised that the act carried an appreciable risk of serious injury. Manslaughter by criminal negligence, on the other hand, finds its authority in the Victorian case of ''Nydam v R'',
[.] confirmed by the High Court of Australia in ''R v Lavender''
[.] and ''Burns v R''.
[.] In ''Nydam v R'',
the Court described the offence at
45in the following terms:
In order to establish manslaughter by criminal negligence, it is sufficient if the prosecution shows that the act which caused the death was done by the accused consciously and voluntarily, without any intention of causing death or grievous bodily harm but in circumstances which involved such a great falling short of the standard of care which a reasonable man would have exercised and which involved such a high risk that death or grievous bodily harm would follow that the doing of the act merited criminal punishment.
Canada
Canadian law distinguishes between justifiable (e.g., self-defence), accidental, and culpable homicide. If a death is deemed a culpable homicide, it generally falls under one of four categories (first-degree murder, second-degree murder, manslaughter, and infanticide).
Canadian law defines manslaughter as "a homicide committed without the intention to cause death, although there may have been an intention to cause harm". There are two broad categories of manslaughter: unlawful act, and criminal negligence.
Unlawful act is when a person commits a crime that unintentionally results in the death of another person.
Criminal negligence is when the homicide was the result of an act that showed wanton or reckless disregard for the lives of others.
England and Wales
In
English law
English law is the common law list of national legal systems, legal system of England and Wales, comprising mainly English criminal law, criminal law and Civil law (common law), civil law, each branch having its own Courts of England and Wales, ...
, manslaughter is a less serious offence than
murder
Murder is the unlawful killing of another human without justification (jurisprudence), justification or valid excuse (legal), excuse committed with the necessary Intention (criminal law), intention as defined by the law in a specific jurisd ...
. In
England and Wales
England and Wales () is one of the Law of the United Kingdom#Legal jurisdictions, three legal jurisdictions of the United Kingdom. It covers the constituent countries England and Wales and was formed by the Laws in Wales Acts 1535 and 1542. Th ...
, the usual practice is to prefer a charge of murder, with the
judge
A judge is a person who wiktionary:preside, presides over court proceedings, either alone or as a part of a judicial panel. In an adversarial system, the judge hears all the witnesses and any other Evidence (law), evidence presented by the barris ...
or defence able to introduce manslaughter as an option (see
lesser included offence). The
jury
A jury is a sworn body of people (jurors) convened to hear evidence, make Question of fact, findings of fact, and render an impartiality, impartial verdict officially submitted to them by a court, or to set a sentence (law), penalty or Judgmen ...
then decides whether the
defendant
In court proceedings, a defendant is a person or object who is the party either accused of committing a crime in criminal prosecution or against whom some type of civil relief is being sought in a civil case.
Terminology varies from one juris ...
is guilty or not guilty of either murder or manslaughter. Manslaughter may be either voluntary or involuntary, depending on whether the accused has the required for murder.
The
Homicide Act 1957 and
Coroners and Justice Act 2009 are relevant acts.
Voluntary manslaughter occurs when the defendant avails themself of two statutory defences described in the Homicide Act 1957 (diminished responsibility and a suicide pact; provocation was a third but this was replaced by loss of control in 2010).
Involuntary manslaughter occurs when the agent has no intention () of committing murder but caused the death of another through
recklessness or
criminal negligence
In criminal law, criminal negligence is an offence that involves a breach of an objective standard of behaviour expected of a defendant. It may be contrasted with strictly liable offences, which do not consider states of mind in determining c ...
. The crime of involuntary manslaughter can be sub-divided into two main categories; constructive manslaughter and gross negligence manslaughter.
United States
Manslaughter is a crime in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
. Definitions can vary among jurisdictions, but the U.S. follows the general principle that manslaughter involves causing the death of another person in a manner less
culpable than
murder
Murder is the unlawful killing of another human without justification (jurisprudence), justification or valid excuse (legal), excuse committed with the necessary Intention (criminal law), intention as defined by the law in a specific jurisd ...
, and observes the distinction between voluntary and involuntary manslaughter.
Japan
Manslaughter is a crime in Japan under the title of "injury causing death". It is defined as "causing another person to suffer injury resulting in death". The minimum penalty for manslaughter is three years, with a ''
de facto'' maximum of life in prison since no maximum is specified.
Civil law
Some
civil law jurisdictions, such as the
French criminal code
The French criminal code () is the codification of French criminal law (). It took effect March 1, 1994 and replaced the French Penal Code of 1810, which had until then been in effect. This in turn has become known as the "old penal code" in t ...
, use murder (intentional homicide) or manslaughter (culpable homicide), and a Felony-Murder (homicide
praeter-intentionnel). Italian criminal law also provides for murder (intentional homicide, art. 575 c.p.), Felony-Murder (homicide "
preterintenzionale" art. 584 c.p.) and manslaughter (homicide "colposo" art. 589 c.p.):
Historical distinction from murder
A legal distinction between intentional and unintentional homicide was introduced in Athenian law in 409 BC, when the legal code of
Draco indicated that intentional homicide (''hekousios phonos'' or ''phonos ek pronoias'') was punishable by death. The language is ambiguous as to unintentional homicide (''akousios phonos''), but it may have been punishable by exile.
However, academic David D Phillips says that these categories "do not correspond to the common-law categories of murder and manslaughter either in their original significance or in their present definitions", because under Athenian law intentional homicide would include both murder and voluntary manslaughter.
Anglo-Saxon law recognised particular degrees of homicide, with the worst being ''forsteall'' (killing by ambush).
''Murdra'' was a separate type of aggravated (secret) homicide under Anglo-Saxon law;
William the Conqueror
William the Conqueror (Bates ''William the Conqueror'' p. 33– 9 September 1087), sometimes called William the Bastard, was the first Norman king of England (as William I), reigning from 1066 until his death. A descendant of Rollo, he was D ...
defined it narrowly as a fine that would be charged on a
hundred
100 or one hundred (Roman numerals, Roman numeral: C) is the natural number following 99 (number), 99 and preceding 101 (number), 101.
In mathematics
100 is the square of 10 (number), 10 (in scientific notation it is written as 102). The standar ...
following the slaying of a foreigner (originally a Norman, but intermarriage would end the distinction between Normans and English by the 13th century).
By 1348, the association between ''murdrum'' and
malice aforethought emerged.
"Manslaughter" as a general term for homicide was in use in medieval England by the late 1200s, during which time a distinction was forming between homicide committed in necessary self-defence (pardoned without culpability) and homicide committed by accident (pardoned but with moral blame).
From 1390, homicide in necessary self-defence or by misadventure became "pardons of course", meaning that the Chancery would issue them by default.
Homicide in necessary self-defence would later be acquitted, rather than pardoned.
The use of "manslaughter" to cover homicides other than murder emerged by 1547, in a statute.
Edward Coke
Sir Edward Coke ( , formerly ; 1 February 1552 – 3 September 1634) was an English barrister, judge, and politician. He is often considered the greatest jurist of the Elizabethan era, Elizabethan and Jacobean era, Jacobean eras.
Born into a ...
confirms this distinction in ''The Third Part of the Institutes of the Laws of England,'' which remains "the authoritative starting point for any examination of the law of homicide" in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
and other
common law
Common law (also known as judicial precedent, judge-made law, or case law) is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on prece ...
countries''.''
See also
*
Culpable homicide
*
Criminal transmission of HIV
*
Depraved-heart murder
*
Imperfect self-defense
*
Moral luck
*
Twinkie defense
References
External links
{{Types of crime
Killings by type
Homicide
Criminal law
Common law offences in Ireland