Previously printed in the LexisNexis Labour Notes Newsletter.
In Association des ressources intermédiaires d’hébergement du Québec (L’ARIHQ) c. Santé Québec – Centre intégré universitaire de santé et de services sociaux du Centre-Sud de L’Ile-de-Montréal et 9342-4935 Québec Inc., personne morale faisant affaire sous le nom de Centre de Santé Osman et ME Michel A. Jeanniot, 2026 QCCS 1360, the Quebec Supreme Court vacated an arbitral award after the arbitrator used AI to write the decision, relying on hallucinated authorities.
Background
The underlying dispute related to a healthcare contract. The arbitrator rendered a decision in the contract dispute and relied in the legal reasoning on numerous authorities. The losing party considered the decision and, in doing so, tried to review the cited authorities but was unable to locate the same. It was determined that each authority cited in the decision was either invented by AI (hallucinated) or misattributed (the case citation led to an