Gross Negligence Manslaughter

Gross Negligence Manslaughter

Within the common law framework, gross negligence manslaughter is a category of involuntary manslaughter. It arises where the offender has no intention to kill or to cause grievous bodily harm, but, being under a legal duty owed to the deceased, breaches that duty in a grossly negligent manner and thereby causes the death of another. In a decision of the Court of Final Appeal, the court confirmed the four elements of gross negligence manslaughter to be: 

1. the defendant owed a duty of care to the deceased; 
2. that duty of care was breached; 
3. the breach caused the death of the deceased; and 
4. the defendant's conduct involved gross negligence. 

Existence of a Duty of Care 

A "duty of care" is a legal obligation requiring a person, in certain particular circumstances, to attain a standard of reasonable care in the way he acts. Whether a duty of care exists is a question of law to be determined by the judge; but whether the facts are sufficient to establish that duty of care is a matter for the jury, after receiving legal directions. 

Where a duty of care arises out of the nature of one's occupation, negligent performance may give rise to liability for manslaughter, for example: 

• R v Lowe (1850) 3 C & K 123: a mining engineer left the operation of a lift in the charge of a youth who did not know how to operate it; 
• R v Markuss (1864) 4 F & F 356: a doctor failed to attend to a critically ill patient because he had gone out for entertainment; 
• R v Curtis (1885) 15 Cox 746: a local official negligently failed to provide medical assistance to a destitute person; 
• R v Ko Yuk-ching [1992] 1 HKCLR 191: a train driver failed to obey a signal; 
• HKSAR v Lai Chun Ho [2019] 1 HKLRD 4: a worker repairing an LPG taxi caused an explosion that killed three people. 

Where the defendant owes a duty of care—for example, in the role of a parent or a person acting in the place of a parent—he must safeguard the child's safety. If negligence results in the death of the child, this amounts to manslaughter. 

A duty of care is not confined to family or occupational relationships. Where a person creates or contributes to a life-threatening situation, and he knows, or ought reasonably to know, that the situation is dangerous, he comes under a duty to take reasonable steps to save the life of another. For example, in one case the defendant poured alcohol over a sleeping person and set it alight, causing death. The court held that, by creating the dangerous situation, the defendant owed a duty of care to the deceased, so that the jury had to consider whether, if murder was not made out, gross negligence manslaughter was established. 

Breach of Duty 

The prosecution must prove that the defendant breached that duty of care. This can only be done by demonstrating a reasonable and expected standard of conduct, and proving that the defendant failed to attain that standard. A breach of the duty of care need not be intentional. 

The Breach Caused the Death of the Deceased 

The prosecution must also prove that the defendant's breach of the duty of care was one of the causes of the deceased's death. The defendant's negligence need not be the sole cause of death; it is sufficient to satisfy the requirement of causation if the negligence was a "significant contributory cause" of death. In appropriate circumstances, to establish the requisite causation between the negligence and the death, it is enough to prove that, but for the negligence, the deceased's life would have been significantly prolonged. 

Where the death of the deceased was caused in part by the defendant's negligence, the defendant cannot rely, by way of defence, on the fact that the deceased was himself also negligent and thereby contributed to his own death. In other words, contributory negligence on the part of the deceased does not, in itself, negate the defendant's criminal liability. 

"Gross" Negligence 

A criminal prosecution founded on negligence should be brought only where there is a sufficient basis for it, and only where an ordinary reasonable person would consider that criminal punishment is called for, rather than merely civil proceedings or internal disciplinary action. The mere fact that a statutory safety requirement was breached in circumstances resulting in death is not sufficient to found a conviction for gross negligence manslaughter.  

The Hong Kong Court of Final Appeal has held that the final element of gross negligence manslaughter is established by an objective standard of reasonableness, and that the prosecution need not additionally prove that the defendant was subjectively aware of an obvious and serious risk of death. 

Sentencing Principles 

In sentencing, the court must have regard to the nature of the breach of duty and the degree of negligence involved. The line between murder and manslaughter may be a very fine one. In an appropriate case, a discretionary sentence of life imprisonment may be fitting and reasonable. 

As regards sentencing, aggravating factors include the degree of the defendant's culpability, in particular whether he knew that he was putting more than one person at risk, or whether the presence of multiple deceased persons was foreseeable. In addition, any hostility or aggression shown towards others, the consumption of alcohol or drugs, and whether the gross negligence was continuing or merely momentary, are all relevant considerations. 

The Court of Appeal has observed that manslaughter arising out of the operation of a vehicle is more serious than the offence of "causing death by dangerous driving". Accordingly, it applies only to cases involving gross negligence sufficient to create a high risk of death, and calls for a heavier sentence than that for causing death by dangerous driving.