Mo. Rev. Stat. § 233.140
No treasurer of the districts shall pay any check warrant drawn on such treasurer unless such check warrant is presented for payment by the person in whose favor it is drawn or by the person's assignee, endorsee, executor or administrator and when presented for payment if there is no money in the treasury for that purpose the treasurer shall so certify on the back of the check warrant and shall date and subscribe the same and such check warrant shall bear interest at the rate of six percent per annum from such date until such check warrant is paid or until the money to pay such check warrant is in the hands of the treasurer. The treasurer shall keep a record of the check warrants presented and shall pay the same or set aside money for the payment of the same in the order in which they are issued.
§ 233.140, RSMo