Employment-related aggravation of preexisting condition which is not employment related; aggravation of employment-related occupational disease by incident which is not employment related.
Nev. Rev. Stat. § 617.366
in effect1. The resulting condition of an employee who:
(a) Has a preexisting condition from a cause or origin that did not arise out of and in the course of the employees current or past employment; and
(b) Subsequently contracts an occupational disease which aggravates, precipitates or accelerates the preexisting condition,
Ê shall be deemed to be an occupational disease that is compensable pursuant to the provisions of chapters 616A to 617 , inclusive, of NRS, unless the insurer can prove by a preponderance of the evidence that the occupational disease is not a substantial contributing cause of the resulting condition.
2. The resulting condition of an employee who:
(a) Contracts an occupational disease; and
(b) Subsequently aggravates, precipitates or accelerates the occupational disease in a manner that does not arise out of and in the course of his or her employment,
Ê shall be deemed to be an occupational disease that is compensable pursuant to the provisions of chapters 616A to 617 , inclusive, of NRS, unless the insurer can prove by a preponderance of the evidence that the occupational disease is not a substantial contributing cause of the resulting condition.
Source: NV Statutes (Official Site)URL: https://www.leg.state.nv.us/nrs/NRS-617.htmlFetched: 10/4/2026