Idaho Code § 72-201
The common law system governing the remedy of workmen against employers for injuries received and occupational diseases contracted in industrial and public work is inconsistent with modern industrial conditions. The welfare of the state depends upon its industries and even more upon the welfare of its wageworkers. The state of Idaho, therefore, exercising herein its police and sovereign power, declares that all phases of the premises are withdrawn from private controversy, and sure and certain relief for injured workmen and their families and dependents is hereby provided regardless of questions of fault and to the exclusion of every other remedy, proceeding or compensation, except as is otherwise provided in this act, and to that end all civil actions and civil causes of action for such personal injuries and all jurisdiction of the courts of the state over such causes are hereby abolished, except as is in this law provided.
Idaho Code § 72-201