The proximity of an act of negligence causing injury and an act of contributory negligence will vary according to the circumstances of individual cases. In a motor vehicle collision, for example, where contributory negligence is alleged, both of the acts resulting in the injury will occur contemporaneously. In an industrial accident situation the negligent creation of an unsafe system of work may precede by some time the activity (which may involve contributory negligence) from which the injury is sustained.
In cases where the injury caused is a disease, and the gestation period is lengthy, the original negligent conduct and the injury it occasions may be separated by years. It does not follow however that negligent conduct by a plaintiff which subsequently contributes to the causation of that injury, must be categorised as being too remote.
Where, as in this case, the conduct of both the defendant and the plaintiff are causative factors in the production of the injury (being a disease), then it is both logical and legally appropriate for an assessment to be made of the conduct of both parties at the time the injury occurs to determine whether there has been actionable negligence and contributory negligence. It is at that time the issues of foreseeability and want of reasonable care fall for consideration. Until that time no cause of action in negligence can arise.
On this analysis the contributory negligence of a plaintiff may be very proximate to the personal injury (being a disease) upon which the cause of action is predicated.
As [counsel for the employer] pointed out in his submission, there is nothing in s 26 of the Wrongs Act 1958 to suggest that any form of concurrence between primary and contributory negligence is required. It is clear that what is to be considered is the responsibility of the litigant for the damage occasioned.
Accordingly I am unable to see that any principle of remoteness precluded the jury from considering the issue of contributory negligence in this case.
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[T]he smoking in this case is causative of the injury itself. It is not something subsequent, additional or super-added to the injury sustained. Here the smoking contributed to the precise injury for which damages were sought.
My task in this ruling is not to determine the appropriateness of the jury attribution of 70 per cent contributory negligence to the plaintiff, it is merely to determine whether the issue of contributory negligence was properly before the jury.[9]