Contributory negligence is a mitigatory defence, whereby a claimant's damages are reduced in accordance with the percentage of contribution made by the claimant to the loss or damage suffered. Thus, in evaluating a collision between two vehicles, for example, if the wronged driver were not wearing a seatbelt, he would most likely be contributorily negligent. The court will then quantify the damages for the actual loss or damage sustained, and then reduce the amount paid to the claimant by 20%. Contributory negligence can also function as a full defence, when it is assessed at 100%, as in "Jayes v IMI Kynoch".