Definition
Characterized by special or unusual danger beyond the ordinary risks associated with a given activity, occupation, or condition. In insurance law, a risk is extrahazardous when the circumstances attending it elevate the danger materially above the standard contemplated by a general policy. In employment and tort law, extrahazardous describes activities or occupations so inherently dangerous that ordinary care is insufficient to protect against the risks they create, often triggering strict or heightened liability standards.
Why It Matters in Research
The word does significant legal work in two distinct contexts, and researchers need to distinguish them carefully.
In insurance law, the extrahazardous classification directly affects policy coverage and premium structure. Historical policies and rate schedules frequently used the term to define excluded risks or to trigger endorsement requirements. When researching coverage disputes in nineteenth and early twentieth century sources, watch for the term as a threshold classification — courts often asked whether a particular use, activity, or occupation rendered a risk extrahazardous as a matter of law or as a question of fact for the jury. The answer determined whether a general policy remained in force.
In tort and workers' compensation law, extrahazardous employment became a statutory classification in many jurisdictions during the early twentieth century progressive reform era. Several states enacted workers' compensation schemes that initially applied only to enumerated extrahazardous occupations before expanding to general coverage. Research into the legislative history of state compensation schemes will frequently encounter the term as a jurisdictional trigger. The classification also appears in employer liability statutes predating workers' compensation, where it informed the scope of the fellow-servant rule's abrogation and modified contributory negligence defenses.
Because the term spans both insurance and employment contexts, a corpus search will surface documents from quite different legal frameworks using the same word. Context must govern interpretation. Do not assume insurance-law meaning when the document originates in an industrial accident or railroad litigation context.
Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) confines the definition to insurance law, defining extrahazardous as a condition "characterized or attended by circumstances or conditions of special and unusual danger." This is narrower than the term's actual doctrinal reach at the time of publication. By the early 1900s, extrahazardous was already appearing prominently in employer liability and nascent workers' compensation scholarship, a usage Black's does not capture.
The definition's focus on the special-and-unusual-danger standard is accurate as far as it goes and aligns with how courts applied the term: the question was not merely that a risk was dangerous, but that it exceeded what the ordinary contractual or legal baseline contemplated. This comparative framing — dangerous relative to some baseline — is the consistent thread across both insurance and employment applications.
Historical dictionaries generally underserve this term. Researchers relying solely on Black's second edition will miss the statutory employment-law dimension that became increasingly important in the decade or two following that edition's publication.
Jurisdictional Note
State workers' compensation and employer liability statutes varied substantially in how they defined and listed extrahazardous occupations or activities, with some states enumerating specific industries and others leaving the classification to administrative determination. Researchers working in pre-uniform-act state law must consult the relevant state statute directly; the federal or majority-rule standard provides limited guidance.