Aetna Life & Casualty Co. v. McGregor
The Supreme Court erred in granting the plaintiff a permanent injunction that barred the defendant from proceeding before the Workers’ Compensation Board. Despite the Board ordering the defendant's case reopened, the plaintiff had only sought a preliminary injunction. A critical prerequisite for a preliminary injunction, irreparable injury, was not demonstrated by the plaintiff. Consequently, the appellate court reversed the order of the Supreme Court. The injunction against the defendant was unanimously vacated.