Revised Code of Washington

Wash. Rev. Code § 51.32.100 (2026)

Preexisting disease

✓ current as of May 2026

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If it is determined that an injured worker had, at the time of his or her injury, a preexisting disease and that such disease delays or prevents complete recovery from such injury, it shall be ascertained, as nearly as possible, the period over which the injury would have caused disability were it not for the diseased condition and the extent of permanent partial disability which the injury would have caused were it not for the disease, and compensation shall be awarded only therefor.

[ 1977 ex.s. c 350 s 49; 1971 ex.s. c 289 s 44; 1961 c 23 s 51.32.100. Prior: 1957 c 70 s 34; prior: 1949 c 219 s 1, part; 1947 c 246 s 1, part; 1929 c 132 s 2, part; 1927 c 310 s 4, part; 1923 c 136 s 2, part; 1919 c 131 s 4, part; 1917 c 28 s 1, part; 1913 c 148 s 1, part; 1911 c 74 s 5, part; Rem. Supp. 1949 s 7679, part.]

Notes:

Effective dates—Severability—1971 ex.s. c 289: See RCW 51.98.060 and 51.98.070.

Notes of Decisions

Cited in 3 cases, 1964–1991 · leading case: Weyerhaeuser Co. v. Tri, 814 P.2d 629 (Wash. 1991).

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Weyerhaeuser Co. v. Tri, 814 P.2d 629 (Wash. 1991). · cites it 3× “100 provides: If it is determined that an injured worker had, at the time of his or her injury, a preexisting disease and that such disease delays or prevents complete recovery from such injury, it shall be ascertained .”

Dennis v. Dep't of Labor & Indus., 745 P.2d 1295 (Wash. 1987). “See also RCW 51.32.100 (setting forth segregation rule where preexisting disease delays or prevents recovery); Allen v.”

Sanders v. B. E. Walker Constr. Co., 169 So. 2d 803 (Miss. 1964). · cites it 2× “" Wash. Rev. Code § 51.32.100 (1951): "If it is determined by the department that an injured workman had, at the time of his injury, a preexisting disease and that such disease delays or prevents recovery from such injury, the said department shall ascertain, as nearly as…”

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