Personal Injury Claims: Understanding the Thin Skull Rule and Damages

The Supreme Court of Canada confirmed the thin skull rule in Athey v. Leonati, [1996] 3 SCR 458, which holds that a negligent party is fully liable for all harm caused to their victim, even if that harm is worse than what an average person would have experienced due to pre-existing conditions.

The thin skull rule has significant implications for personal injury claims in Canada. It means that defendants must take their victims as they find them, and are therefore liable for all damages incurred, regardless of the plaintiff's pre-existing vulnerabilities. This principle is essential for ensuring that individuals who are already fragile or vulnerable do not suffer further harm due to the negligence of others.

The thin skull rule is rooted in tort law and has been a part of Canadian law for some time. It is often referred to by other names, including the eggshell skull rule and the eggshell plaintiff rule. The key takeaway for practitioners is that they must carefully consider the pre-existing conditions of their clients when assessing personal injury damages, as these conditions can significantly impact the outcome of a case.

In practice, this means that attorneys should be aware of the thin skull rule and its application in Canadian courts. They should also be prepared to argue on behalf of their clients that the defendant's negligence has exacerbated pre-existing conditions, thereby increasing the plaintiff's damages. By understanding the thin skull rule and its implications, practitioners can better advocate for their clients' rights and ensure that they receive fair compensation for their injuries.