All directors of departments shall have complete control and supervision over the employees and the work of their departments, including the power to hire, dismiss, suspend, and discipline, subject to Section 3.03 and the provisions of this Charter pertaining to civil service. All directors of departments shall be entitled to one month severance pay in addition to any other compensation or allowances that may be due them, unless the Mayor terminates their services for cause, as such cause shall be determined by uniform rule by ordinance or resolution.