(a) The county treasurer may appoint a deputy, who, in the absence of the treasurer or in case of a vacancy in the office, due to any disability of the treasurer to perform the duties of the office, may perform all the duties of the office of treasurer until the vacancy is filled or the disability removed. In addition to the deputy, the county treasurer also may appoint, promote, demote and dismiss additional deputies and any assistants necessary to carry out the duties of the office. The county treasurer shall supervise all assistants in the performance of their duties. Within the limitations of the budget for the financing of the operation of the county treasurer’s office as approved by the board of county commissioners, the county treasurer may attend and may require the deputies and any assistants to attend any meetings or seminars which the treasurer determines will be beneficial to the operation of the treasurer’s office.

(b) The county treasurer shall submit a budget for the financing of the operation of the treasurer’s office to the board of county commissioners for their approval.

(c) Any personnel action taken by the county treasurer under this section shall be subject to the following: (1) Personnel policies and procedures established by the board of county commissioners for all county employees other than elected officials; (2) any pay plan established by the board of county commissioners for all county employees other than elected officials; (3) any applicable collective bargaining agreements or civil service system; and (4) the budget for the financing of the operation of the treasurer’s office as approved by the board of county commissioners.