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What is Involuntary Manslaughter?

By Victoria Blackburn
Updated: Feb 06, 2024
Views: 13,384
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Involuntary manslaughter is a legal term referring to the unintentional killing of a human being in a manner that is considered to be less culpable than murder. Generally, the law differentiates between levels of legal culpability, based on the person's state of mind at the time of the crime. Involuntary manslaughter refers to a death that has been committed without deliberation, premeditation or malice by the person being accused. Malice is the legal term referring to the state of mind when an act is committed, or the intent to do harm to another human being. There are two types of involuntary manslaughter: criminally negligent manslaughter and unlawful-act manslaughter, also known as constructive manslaughter.

In cases of criminally negligent manslaughter, someone is killed because of the negligence of another person. In this case, the degree of negligence required must be very high to warrant criminal liability. To constitute this type of involuntary manslaughter, the person must have performed an act that is legal, but showed a lack of reasonable skill or care in performing that act. As an example, a drunk driver that kills someone in an accident could be charged with criminally negligent manslaughter.

Failure to perform a duty, or an omission of an act, can also constitute criminal negligence leading to involuntary manslaughter. This applies to those people who have a job, or duty, that entails acting in a particular way under particular circumstances. If the person fails to act, that is when the person can be accused of criminal negligence. For example, medical doctors can be charged with criminal negligence in circumstances where a patient dies from the doctor failing to perform his or her duties.

In cases of unlawful-act manslaughter or constructive manslaughter, someone commits an act that is unlawful, but not a felony, which leads to a death. The intent was not to cause bodily harm or death, although the death would not have happened if the person had not committed the illegal act. For example, if a shopkeeper has a heart attack and dies because of the shock caused by an attempted robbery, then the robber may be charged with unlawful-act manslaughter. This type of involuntary manslaughter is sometimes called misdemeanor manslaughter.

The penalty for involuntary manslaughter is often imprisonment of some kind. The prison term depends on the applicable law in the jurisdiction that the crime is committed in, as well as the severity and type of crime committed. In most cases, the penalty for criminally negligent manslaughter is worse than the penalty for unlawful-act manslaughter.

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Discussion Comments
By SteamLouis — On Jul 30, 2013

@alisha-- That's right, there is no "heat of passion" in involuntary manslaughter.

There has to be one of two things for a killing to be considered involuntary manslaughter: negligence or an unlawful act. Drunk driving is a good example of negligence and unlawful act can be something like running a red light.

Different states can have slightly different definitions and categories for these though, so it's always best to check according to the state.

By discographer — On Jul 29, 2013

@SarahGen-- I think that in second degree manslaughter, there is provocation or the circumstances have lead to manslaughter. With involuntary manslaughter, there is no provocation or special circumstance. Manslaughter takes place because of recklessness, even if it is unintentional.

For example, if you drive drunk and run over someone, that's involuntary manslaughter. If someone punches you and you punch them back and they die, that's second degree murder.

I'm not a lawyer or law expert though, so I might be wrong. If anyone wants to clarify this or add onto what I said, that would be great.

By SarahGen — On Jul 28, 2013

What's the difference between involuntary manslaughter and second degree manslaughter? Second degree manslaughter is done without deliberation and premeditation too.

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