Mo. Rev. Stat. § 455.526
455.526 Assignment of wages.
455.526. Assignment of wages. — The court may order the person obligated to pay support or maintenance to make an assignment of a part of his periodic earnings or other income to the person entitled to receive the payments in accordance with chapter 452 .
(L. 1987 H.B. 598 § 11, A.L. 1995 S.B. 174)