Mo. Rev. Stat. § 291.040
The salaries and compensation of the subordinate officials and employees provided for in section 291.030, shall be paid in like manner and from the same source as the salary of the director of the inspection section, upon vouchers approved by the director. The salaries and compensation shall be as follows: Assistant director of the inspection section, not exceeding six thousand six hundred dollars per annum each; chief clerk, not exceeding six thousand six hundred dollars per annum; administrative secretary, not exceeding four thousand eight hundred dollars per annum; three special safety inspectors, not to exceed five thousand four hundred dollars per annum each; inspectors, not to exceed five thousand four hundred dollars per annum; secretary, not exceeding four thousand two hundred dollars per annum; and stenographer, not to exceed four thousand two hundred dollars per annum, except that the two stenographers who act as office managers in the two branches shall receive a salary not to exceed four thousand five hundred dollars per annum; statistician, not to exceed six thousand six hundred dollars per annum. Such compensation shall be paid the janitor as is fixed by the director, not to exceed the sum of two hundred dollars per month for the time employed.
§ 291.040, RSMo