Wisconsin
How Byrne v. Boadle applies in Wisconsin: state-specific rules, key cases, and bar exam notes for Torts.
Wisconsin law employs the doctrine of res ipsa loquitur similarly to the principles established in Byrne v. Boadle. Under Wisconsin law, when an injury results from an event that ordinarily does not occur in the absence of negligence, the burden of proof shifts to the defendant to explain the incident.
In Wisconsin, the standard for res ipsa loquitur requires that the injury is of a type that does not happen without negligence, and the instrumentality causing the injury was under the exclusive control of the defendant.
The court held that the presence of a hazardous condition on defendant's property, of which the plaintiff was unaware, was sufficient to establish negligence under the res ipsa loquitur doctrine.
The court applied res ipsa loquitur to hold the manufacturer liable when a product defect led to an injury, emphasizing that the defect was within the exclusive control of the defendant.
The court ruled that overhead scaffolding falling on a construction site constituted evidence sufficient for res ipsa loquitur as the accident would not ordinarily happen in the absence of negligence.
Wisconsin's application of res ipsa loquitur aligns closely with federal standards, particularly regarding the requirements of negligence and control over the instrumentality. However, federal courts may emphasize more specific factual circumstances surrounding liability than Wisconsin courts, which may apply a broader interpretation.
Candidates should be aware that res ipsa loquitur is a frequent topic in the Wisconsin bar exam, often requiring analysis of whether the facts fit within the established framework of the doctrine.