Missouri Constitution of 1945 Art. IV, § 21. Limitation on changes of salaries--fees, costs

The officers named in this article shall receive for their services salaries fixed by law, which shall not be increased or diminished during their terms. After the expiration of the terms of those now in office the officers named shall not receive to their own use any fees, costs, perquisites of office or other compensation, and all fees provided by law for any service performed by them shall be paid in advance into the state treasury.