Mo. Const. art. III, § 17
Mo. Const. art. III, § 17. Limitation on number of legislative employees
Until otherwise provided by law, the house of representatives shall not employ more than one hundred twenty-five and the senate shall not employ more than seventy-five employees elective, appointive or any other at any time during any session. [Effective - 03 Dec 1970 , see footnote]