Mo. Rev. Stat. § 23.040
From the time the general assembly of the state convenes until it is adjourned finally, the committee on legislative research, through its representatives, shall give consideration to and service concerning any bill before the general assembly requested by any member of the senate or the house of representatives or any committee of the general assembly having the bills before it for consideration. This service shall continue after adjournment and during any recess or vacation. Employees of the committee shall not oppose or urge legislation but, upon request, shall assist members of the general assembly as to bills, resolutions and measures, draft them in proper form and furnish to members any available information upon matters which fall within the scope of the duties of the committee.
§ 23.040, RSMo
RSMo 1939 § 14745, A.L. 1943 p. 632, A.L. 1957 p. 595