Mo. Rev. Stat. » Chapter 435
Missouri Revised Statutes

Mo. Rev. Stat. § 435.445 (2026)

Act not retroactive

✓ laws through the 2026 session (checked Sept. 2026)
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  435.445.  Act not retroactive. — Sections 435.350 to 435.470 apply only to agreements made subsequent to the taking effect of sections 435.350 to 435.470.

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(L. 1980 H.B. 1203 § 20)

Notes of Decisions
Cited in 7 cases, 1982–1996 · leading case: Reis v. Peabody Coal Co., 935 S.W.2d 625 (Mo. Ct. App. 1996).
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Reis v. Peabody Coal Co., 935 S.W.2d 625 (Mo. Ct. App. 1996). · cites it 4× “By applying the Missouri Act, the 1963 arbitration agreement would be unenforceable because the Missouri Act applies to agreements entered into after the statute’s effective date of August 13, 1980.”
Hefele v. Catanzaro, 727 S.W.2d 475 (Mo. Ct. App. 1987). · cites it 4× “§ 435.445 RSMo 1986. Although the original partnership agreement containing the provision for the settlement by arbitration of any controversy arising under the contract was entered into December 1, 1977, subsequent amendments to the original agreement were made as late as…”
Branch v. Am. Freight Sys., Inc., 586 F. Supp. 184 (W.D. Mo. 1983). · cites it 4× “Mo.Rev.Stat. § 435.445. Prior to the DelCostello decision, it would seem that the statute applicable to the present sitúa *187 tion would be § 435.”
Med. Shoppe Int'l, Inc. v. J-Pral Corp., 662 S.W.2d 263 (Mo. Ct. App. 1984). “§ 435.445, Cum.Supp.1980. The General Assembly did not repeal the prior arbitration statutes, §§ 435.”
Lincoln v. Dist. 9 of Intern. Ass'n of Machinists, 539 F. Supp. 1346 (E.D. Mo. 1982). “§ 435.445, R.S.Mo. The collective bargaining agreement in this case took effect on December 21, 1978 and expired on February 28, 1982.”
Collins v. Am. Freight Sys., Inc., 559 F. Supp. 1032 (W.D. Mo. 1983). “§ 435.445. The collective bargaining agreement applicable to plaintiff was effective April 1, 1975 to March 31, 1979, well before the effective date of the Act.”
Bandelier v. Local 782, Retail Store Employees Union, 560 F. Supp. 37 (W.D. Mo. 1983). “§ 435.445. In that plaintiff was discharged in 1979, any collective bargaining agreement applicable to plaintiff was effective before the effective date of the Act.”
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