The Court considered whether victims compensated under Quebec's no-fault automobile scheme could still sue third parties for subsequent medical or police faults causing aggravated or separate injuries.
The majority held the statutory causal link is sui generis and satisfied where there is a plausible, logical, and sufficiently close connection between the accident, subsequent events, and resulting injury.
On that interpretation, the claims remained within the compensation scheme and civil actions were barred by section 83.57.
A dissent would have allowed actions for truly separate injuries caused by later faults.
Both appeals were dismissed.