La. R.S. 36:765

There may be a deputy state treasurer of the department, who shall be appointed by the state treasurer with consent of the Senate and who shall serve at the pleasure of the state treasurer at a salary fixed by the state treasurer, which salary shall not exceed the amount approved for such position by the legislature while in session. If appointed, the deputy state treasurer shall be the first assistant of the state treasurer. The duties and functions of the deputy state treasurer shall be determined and assigned by the state treasurer. He shall serve as acting state treasurer in the absence of the state treasurer as provided by law.