Halloran v. Virginia Chemicals Inc.

New York Court of Appeals · 1977 · Evidence

41 N.Y.2d 386 (1977)

Updated August 1, 2026

Evidencehabit evidenceregular usagenegligencecollateral matterextrinsic impeachmentproducts liabilityprima facie case

Facts

Plaintiff, an experienced automobile mechanic, was injured when a can of Freon exploded while he was charging an automobile air-conditioning unit. He testified that he placed the can in warm tap water and monitored the temperature with a thermometer, and denied ever using an immersion coil to heat the water. Virginia Chemicals sought to introduce testimony from a witness who had seen plaintiff use an immersion coil on prior occasions and had warned him of the danger, but the trial court excluded the testimony. Plaintiff was the only eyewitness to the explosion, and no particular defect in the can or contents was established at trial.

Issue

Whether evidence that plaintiff had previously and regularly used an immersion heating coil to heat water for Freon cans was admissible to show that he likely followed the same practice on the day of the explosion. The case also presented whether the defendant had preserved its objection to the exclusion of that evidence.

Rule

Evidence of habit or regular usage is admissible to prove that a person acted in conformity with that habit on a particular occasion when the evidence shows a deliberate and repetitive practice, not merely occasional or variable conduct. To justify admission, the proponent must show on voir dire a sufficient number of instances to warrant a finding of habit or regular usage, preferably with times and places fixed at least generally; if there is only one prior instance, exclusion is proper.

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One of 10 multiple-choice questions for this case. Pick an answer to see why.

In a negligence action in Cleveland, warehouse technician Marcus Doyle claims he safely sealed a series of solvent drums before one burst. Marcus is the only eyewitness. The defense seeks to call Priya Nanda, a former coworker, who would testify that over the past year she saw Marcus use the same unapproved powered clamp to force lids shut on dozens of occasions whenever a lid resisted, all at the same warehouse.

Should the court admit Priya's testimony to show Marcus likely used the powered clamp on the day of the burst?

Explanation. The majority held that evidence of habit or regular usage is admissible to prove conduct on a particular occasion when it shows a deliberate, repetitive practice that is predictive and under the actor's control. The testimony here concerns a specific routine method of executing the task, repeated many times in the same setting, not merely a general tendency toward carelessness. The majority rejected the broad proposition that such evidence is never admissible on negligence issues.