(1) The principles that are applicable in determining whether a person has been negligent also apply in determining whether the person who suffered harm has been contributorily negligent in failing to take precautions against the risk of that harm.
(2) For that purpose:
(a) the standard of care required of the person who suffered harm is that of a reasonable person in the position of that person, and
(b) the matter is to be determined on the basis of what that person knew or ought to have known at the time.
5S Contributory negligence can defeat claim
In determining the extent of a reduction in damages by reason of contributory negligence, a court may determine a reduction of 100% if the court thinks it just and equitable to do so, with the result that the claim for damages is defeated.