Definition of Extraordinary Hazard
One not commonly associated with a job or undertaking. If hazards are increased by what other employees do, and injured employee has no part in increasing them, they tire “extraordinary”. Stone v. Howe, 92 N.H. 425, 32 A.2d 484, 487. See also Extraordinary risk.
That's the definition of Extraordinary Hazard in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.