Definition
HAZARD carries two distinct legal meanings separated by centuries of usage and context. Researchers must determine which meaning governs before relying on any source.
1. In old English and early American law: An unlawful game played with dice. Players were called hazardors. This meaning is essentially obsolete in active legal practice but appears in historical statutes, criminal codes, and commentary.
2. In modern law: A source of danger, risk, or peril — a condition, circumstance, or obstacle that presents a probability of harm or loss. This meaning pervades insurance law, tort law, environmental and regulatory law, workplace safety, and products liability. The term is used both descriptively (a condition that exists) and normatively (a condition that triggers legal duties or liability).
In insurance law specifically, hazard refers to a condition that increases the likelihood or severity of loss covered under a policy, often distinguished from the broader concept of "risk." In regulatory contexts — particularly environmental and occupational safety law — hazard frequently carries a statutory or technical definition that may differ from its common-law meaning.
---
Common Language
Modern common usage (Wiktionary): The chance of suffering harm; danger, peril, risk of loss. Also, an obstacle or feature that presents risk in a specific setting (a golf course sand trap, a road hazard).
Historical common usage (Webster's 1913): A game of chance played with dice; the uncertain result of throwing a die; hence, a fortuitous event, chance, or accident; also risk, danger, or peril.
The gap matters in two directions. First, ordinary usage treats hazard and risk as near-synonyms; insurance law distinguishes them with precision, treating hazard as a condition that modifies risk rather than risk itself. Second, the archaic gaming meaning is so thoroughly embedded in early legal dictionaries that researchers encountering the word in pre-nineteenth century statutes or treatises should not assume the modern danger-and-peril sense was intended.
---
Common Confusion
HAZARD vs. RISK: In general legal and regulatory writing these terms are often used interchangeably. Insurance law treats them as distinct: risk is the possibility that a covered loss will occur; hazard is a condition that increases that possibility. A leaking gas line is a hazard; the chance the building burns down is the risk. Regulatory science (particularly under environmental statutes) often adopts a further technical distinction in which hazard refers to the intrinsic capacity of a substance or condition to cause harm, while risk incorporates the probability of exposure.
HAZARD vs. PERIL: In insurance law, peril is the immediate cause of loss (fire, flood, collision); hazard is the background condition that makes a peril more likely to occur or more severe. The two terms are frequently conflated in non-specialist writing and in older cases.
---
Recognized Forms
/SUBTYPES
In insurance law, three subtypes are widely recognized:
Physical hazard: A tangible, observable condition that increases the likelihood of loss — the condition of a building, the nature of stored materials, the layout of a worksite.
Moral hazard: A characteristic of the insured person — dishonesty, poor habits, or reduced incentive to prevent loss because of the existence of insurance coverage.
Morale hazard (also: attitudinal hazard): Carelessness or indifference arising from the comfort of insurance protection, distinct from moral hazard in that it does not imply intentional wrongdoing.
In environmental and occupational safety law, "hazard" is a term of art that may be defined by statute or regulation. RCRA, OSHA's Hazard Communication Standard, and the Clean Air Act each carry their own operative definitions.
---
Why It Matters in Research
The dual-meaning problem is acute. A researcher encountering "hazard" in a colonial or early American criminal statute is almost certainly reading a gambling prohibition. The same word in a twentieth-century insurance policy or OSHA standard carries no trace of that meaning. Failure to check the date and context of a source can produce a fundamental misreading.
In insurance law research, the hazard/risk/peril triad is foundational, and courts do not always apply these distinctions consistently. Older cases in particular may use "hazard" loosely where modern doctrine would use "peril." When reading historical insurance opinions, treat the terminology as potentially imprecise.
In environmental and regulatory research, "hazardous" compounds derived from this root — hazardous waste, hazardous substance, hazardous air pollutant — each carry independent statutory definitions. Do not assume that a judicial or regulatory interpretation of "hazardous" under one statute transfers to another. RCRA's definition of hazardous waste and the Clean Air Act's definition of hazardous air pollutants are products of separate legislative histories and regulatory programs.
In tort and products liability research, "hazard" often appears in negligence analysis as a condition creating foreseeable risk of harm. The question of whether a hazard was known or knowable is critical to duty and breach analysis. Distinguish cases where "hazard" is used descriptively from those where it functions as a term with a defined legal threshold.
Bouvier's note that "to engage in a wager of any kind is a 'hazard' within the meaning of a statute" illustrates how courts have sometimes interpreted the gaming-law meaning broadly. Researchers working on historical gambling statutes should not assume the term was limited to dice games.
---
Historical Dictionary Support
The historical dictionaries show a clean two-era structure. Black's first edition and Bouvier's both lead with the unlawful dice game as the primary definition, citing Jacob's Law Dictionary. Black's second edition is the transitional source, presenting both meanings explicitly under numbered sub-definitions — the old English gaming sense first, modern law second — which signals that by the time of that edition, the modern meaning was already dominant in practice.
Anderson's entry is the most useful for modern research. It defines hazard as "danger, peril, risk, but not necessarily the greatest degree," a formulation that captures the legal nuance that hazard implies meaningful risk without requiring certainty or even probability of the worst outcome. That qualifier — "not necessarily the greatest degree" — is analytically significant in regulatory and tort contexts where degree of risk determines the threshold for legal action.
What the historical dictionaries largely omit is the insurance law elaboration of physical, moral, and morale hazard. That taxonomy developed through industry practice and case law, not through the dictionary tradition, and researchers relying solely on these sources will miss it.
---
Jurisdictional Note
In environmental and workplace safety law, "hazard" carries federally defined meanings under RCRA, the Clean Air Act, CERCLA, and OSHA's regulatory framework. State environmental statutes may adopt these federal definitions by reference or establish independent standards. In insurance law, state law governs policy interpretation, and courts in different jurisdictions have not uniformly adopted the physical/moral/morale hazard distinctions as binding categories.
---