Revised Code of Washington

Wash. Rev. Code § 51.08.018 (2026)

"Average monthly wage."

✓ current as of May 2026

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For purposes of this title, the average monthly wage in the state shall be the average annual wage as determined under RCW 50.04.355 as now or hereafter amended divided by twelve.

[ 1977 ex.s. c 323 s 3; 1971 ex.s. c 289 s 15.]

Notes:

Severability—Effective date—1977 ex.s. c 323: See notes following RCW 51.04.040.

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

Notes of Decisions

Cited in 11 cases, 1977–2014 · leading case: Cockle v. Dept. of Labor & Indus., 16 P.3d 583 (Wash. 2001).

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Cockle v. Dept. of Labor & Indus., 16 P.3d 583 (Wash. 2001). · cites it 5× “RCW 51.08.018 defines that "average monthly wage" as one-twelfth of the state's "average annual wage" as calculated for purposes of the Unemployment Security Act in RCW 50.”

Cockle v. Dep't of Labor & Indus., 142 Wash. 2d 801 (Wash. 2001). · cites it 5× “RCW 51.08.018 defines this “average monthly wage” as one-twelfth of the state’s “average annual wage” as calculated for purposes of the Employment Security Act in RCW 50.”

Kilpatrick v. Dep't of Labor & Indus., 915 P.2d 519 (Wash. 1995). · cites it 4× “050(2)(d) read: "In no event shall the monthly payments provided in subsection (2) of this section exceed one hundred percent of the average monthly wage in the state as computed under RCW 51.08.018". Likewise, amended RCW 51.”

Dep't of Labor & Indus. v. Auman, 756 P.2d 1311 (Wash. 1988). · cites it 4× “075, each July 1, the amount of compensation to which they [the claimants] are entitled [is multiplied] by a fraction, the denominator of which shall be the average monthly wage in the state under RCW 51.08.018 for the fiscal year in which such person's right to compensation was…”

Cena v. Dep't of Labor & Indus., 121 Wash. App. 915 (Wash. Ct. App. 2004). · cites it 3× “090(7) in effect on January 29, 1982, 9 the date Cena sustained his work related injury, the legislature limited the maximum benefit compensation to 75 percent of the average monthly wage in the state as computed under provisions of RCW 51.08.018, subject to cost of living…”

Cena v. Dep't of Labor & Indus., 91 P.3d 903 (Wash. Ct. App. 2004). · cites it 4× “090(7) in effect on January 29, 1982, [8] the date Cena sustained his work *906 related injury, the legislature limited the maximum benefit compensation to 75 percent of the average monthly wage in the state as computed under provisions of RCW 51.08.018, subject to cost of…”

Rhoades v. Dep't of Labor & Indus., 181 P.3d 843 (Wash. Ct. App. 2008). · cites it 2× “Auman was based on the court’s interpretation of the legislature’s directive that when calculating the annual COLA, “the amount of compensation to which they [the claimants] are entitled [is multiplied] by a fraction, the denominator of which shall be the average monthly wage in…”

Gassaway v. Dep't of Labor & Indus., 571 P.2d 966 (Wash. Ct. App. 1977). · cites it 2× “88 provided a statutory limitation on the maximum monthly benefits allowed: "In no event shall the monthly payments provided in this subsection exceed seventy-five percent of the average monthly wage in the state as computed under RCW 51.08.018." The Department of Labor and…”

Reynolds v. Ins. Co. of North Am., 592 P.2d 1121 (Wash. Ct. App. 1979). · cites it 2× “nd every permanently totally disabled workman or temporarily totally disabled workman receiving a pension or compensation for temporary total disability under this title pursuant to compensation schedules in effect prior to July 1, 1971, shall, after the effective date of this…”

Crabb v. Dep't of Labor & Indus., 326 P.3d 815 (Wash. Ct. App. 2014). “As relevant here, the capping provision states that “[i]n no event shall the monthly payments provided in this section” exceed 120 percent of the average monthly wage in the state as computed under the provisions of RCW 51.08.018. RCW 51.32.090(9)(a). During the 2010 year, RCW…”

Rhoades v. Dep't of Labor & Indus., State, 181 P.3d 843 (Wash. Ct. App. 2008). · cites it 2× “Auman was based on the court's interpretation of the legislature's directive that when calculating the annual COLA: "[T]he amount of compensation to which they [the claimants] are entitled [is multiplied] by a fraction, the denominator of which shall be the average monthly wage…”

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