The determination of legal liability in fatal harm cases depends on the combination of actus reus (the guilty act) and mens rea (the culpable mental state). Penalty depends upon the state of mind of the accused at the relevant time of causing unlawful damage.
The legal maxim Actus non facit reum nisi mens sit rea dictates that an act does not render a person guilty unless accompanied by a culpable state of mind. The concept of mens rea owes a historical debt to Saint Augustine (354–430 AD), who emphasized that an actor's mental state must be evaluated to determine culpability. In his Sermon 180, he stated: "Reum linguam non facit nisi mens rea" ("The tongue does not make one guilty unless the mind is guilty"), referring to criminal liability in perjury.
In criminal jurisprudence, the classification and nomenclature of offenses reflect the degree of social condemnation attached to the offender's state of mind. Offense names such as robbery, dacoity, rape, and murder carry explicit social stigma, branding the perpetrator to isolate them from society as a dangerous person. Conversely, even when human life, the highest loss in any civilization, is lost, if caused by negligence or recklessness, the offender is not branded a murderer.
The statutory headnote carries no such extreme condemnation, titling the offense as "causing death by negligence."
When the Indian Penal Code (IPC) was enacted in 1860, there was no separate provision or specific punishment for causing death by a rash or negligent act. In 1870, this gap was filled by inserting Section 304A into the IPC, which prescribed a maximum imprisonment of two years.
Under the Bharatiya Nyaya Sanhita (BNS) 2023, Section 106 governs causing death by negligence with Punishment up to 5 years imprisonment. A reduced maximum sentence of 2 years imprisonment is prescribed for medical practitioners who cause death while performing a medical procedure.
Distinguishing Negligence, Rashness, and Knowledge
Halsbury defined negligence as a specific tort: the failure to exercise the care demanded by the circumstances. It manifests either as the omission of an obligatory act or the improper performance of a lawful act. Actionable negligence requires three essential elements:
1. Duty of care: The existence of a legal duty between the parties.
2. Breach of duty: The failure to conform to the required standard of care.
3. Causal harm: A direct, unbroken chain of causation linking the breach to actionable damage within the zone of foreseeable danger.
The legal distinction between negligence, rashness, and knowledge hinges on foreseeability and mental state:
Negligence: A person fails to foresee unlawful damage that a reasonable person would have foreseen, thereby failing to take required care and caution.
Rashness (Recklessness): A person foresees the potential risk of damage to life or property, but consciously takes the risk anyway—"gambling" on the act and its result without intending the harmful outcome.
Knowledge (Culpable Homicide): A person acts with clear knowledge of the situations and the likely fatal consequences, even without a specific intention to cause death. In that case the liability escalates from Section 106 BNS (Section 304A IPC) to culpable homicide not amounting to murder under Section 105 BNS (Section 304 IPC).
The Standard of the Reasonable Man & Defense of Accident
When evaluating liability, courts ask whether a reasonable person in the same situation would have taken precautions to avoid the damage. If yes, failure to do so attracts liability.
The "reasonable man" is an objective construct representing a person of average intelligence, education, and reputable character. This benchmark varies across legal traditions: In English Law, it's the "The passenger on the Clapham omnibus." In Indian Law, it's the "The passenger in a third-class railway compartment." In Australia they refer to "The man on the Bondi tram." While in Hongkong the reference goes to “ The man on the Shau Kei Wan tram”
The Defense of Accident and what not is accident in Indian Law:
Section 18 of the BNS (formerly Section 80 of the IPC) recognizes accident as a general exception to criminal liability as :
"Nothing is an offence which is done by accident or misfortune, and without any criminal intention or knowledge in the doing of a lawful act in a lawful manner by lawful means and with proper care and caution."
An act resulting in unintended harm is excused only if performed with proper care and caution. The absence of proper care converts an otherwise lawful act into a punishable offense of negligence or rashness.
Statutory Hierarchy of Fatal Offenses under BNS
Section 106 of the BNS / 304A of IPC does not create an independent substantive offense; rather, it provides a distinct tier of punishment based on mental culpability:
If the act is done with premeditated malice/intention with high probability of death, then it comes under Sec. 103 BNS (Sec. 302 IPC) as Murder punishable with Death or Life Imprisonment.
If done with a lower threshold of intention or knowledge of likely death, it comes under Sec. 105 BNS (Sec. 304 IPC) with a punishment up to Life Imprisonment or 10 Years as Culpable Homicide Not Amounting to Murder.
Causing Death by Rash or Negligent Act without any intention or knowledge comes under Sec. 106 BNS (Sec. 304A IPC) with a punishment up to 5ys (2 yrs for Medical practioners)
Section 106 BNS explicitly contains the clause "not amounting to culpable homicide". If the prosecution proves that the accused acted with knowledge of foreseeable fatal risk, the charge escalates to culpable homicide not amounting to murder under Section 105 BNS.
Subjective vs. Objective Tests: Common Law Evolution
English common law has debated whether criminal negligence and recklessness should be evaluated using a subjective test (what the accused actually foresaw) or an objective test (what a reasonable person ought to have foreseen).
The 4th report of English Parliamentary commission in 1839 suggested “ ….Where the offender does an act attended with manifest danger to life wilfully, that is with knowledge of the consequences, he may be properly said to have the mens mala or heart bend upon mischief. But if he does an act however dangerous it be in its own nature without any knowledge or suspicion of its tendency , that is , if he does not wilfully place life in peril, he cannot be said to show mens mala or heart bend on mischief ”
In Andrews v. Director of Public Prosecutions (1937): Lord Atkin, in a case of causing death due to dangerous driving, established that simple lack of care is insufficient for criminal liability. Criminal negligence requires proof of gross negligence—a degree of blameworthiness demonstrating complete disregard for human life and safety.
R. v. Cunningham (1957): The accused tore a gas meter from a wall to steal money, unintentionally causing a gas leak that poisoned an occupant. The court applied a subjective test: liability required proving that the accused personally foresaw the risk of harm and took it anyway.
R. v. Caldwell & R. v. Lawrence (1982): The House of Lords shifted to an objective test, ruling that foreseeability must be judged strictly against the reasonable man standard, regardless of whether the specific accused perceived the danger. This move away from subjective mens rea drew widespread criticism from legal scholars.
R v G (2003): The House of Lords formally overruled Caldwell and restored the subjective standard of Cunningham. The case involved two children (aged 11 and 12) who caused a building fire while camping. The court held that children could not be judged against the objective foresight of a reasonable adult; culpability must account for the actor's age, capacity, and actual state of mind.
Medical Negligence: Change in penology in Indian law:
The Bolam and Jacob Mathew Standards
Medical negligence is treated differently from general criminal negligence because medical procedures carry inherent risks aimed at beneficial, societal outcomes. A doctor trying to save a patient cannot be judged by the standard of the ordinary layperson ("the passenger on the Clapham omnibus").
Doctrine of Social Utility of the Act. The medical mans act is always placed on a much more higher pedestal than the one playing a game of Russian Roulette since what the doctor does is a social utility act while performing a medical procedure. That's why the punishment is lowered to 2 years in 106 BNS even when gross negligence is found against a doctor.
Gross negligence and Bateman's case of 1925. Dr Percy Bateman was attending a home delivery of a pregnant woman. The child was still born. The placenta did not separate naturally. The attempted manual extraction of placenta lead to serious harm to the uterine tissues, bladder and colon. The patient was transferred to the hospital only after 5 days and she died two days later. He was convicted for causing death of the patient. The appellate court quashed the conviction, finding that there were no gross negligence. Lord Hewart CJ set the bench mark for gross negligence as : “ In order to establish criminal liability facts must be such that, in the opinion of the jury, the negligence of the accused went beyond a mere matter of compensation between subjects and showed such disregard for the life and safety of others as to amount to a crime against the state and conduct deserving punishment.” This was the first authoritative pronouncement on gross criminal negligence in medical negligence cases.
The Bolam Test came a quarter of a century after Bateman.
In Bolam v. Friern Hospital Management Committee, (1957) English law established that a medical professional is not negligent if they act in accordance with a practice accepted as proper by a responsible body of medical professionals skilled in that particular art.
The Indian Position: Jacob Mathew v. State of Punjab (2005)
The Supreme Court of India adopted the Bolam principle for criminal prosecutions involving medical practitioners as follows:
To prosecute a doctor under Section 106 BNS (formerly Section 304A IPC), the prosecution must establish gross negligence or recklessness, not a mere error of judgment or accidental mishap.
Before a police officer registers a case or files a charge sheet against a medical practitioner, an independent medical opinion from a qualified medical board must be obtained to confirm prima facie gross negligence.
This part of section 106 BNS is the latest addition in Indian law to the concept of causing death recklessly.
To conclude :
- Accident is a General Exception u/s 18 BNS
- Causing death by a Rash or Negligent Act is punishable U/s 106 of BNS.
- At the same time, if the act was done with the knowledge regarding the circumstance or harm, then it is punishable U/ s 105 BNS.
- In all these situations the foreseeability of the accused as reasonable man assumes importance.
- When it comes to medical negligence, instead of 'reasonable man' test peer test is to be applied. Jacob Mathew (2005) 6 SCC 1
Author is a Senior Advocate at High Court of Kerala
Views Are Personal