Industrial Claim Appeals Office v. Town of Castle Rock

Summary

The court held that an employer or insurer may rebut the statutory presumption that a qualifying firefighter’s cancer resulted from employment by presenting particularized risk-factor evidence. The employer need not identify a specific alternative cause; it must show by a preponderance of the medical evidence that the firefighter’s employment probably did not cause the cancer. The court affirmed the court of appeals and remanded for reconsideration under this standard.