An employee resigning a position shall give at least two weeks’ notice to enable the borough to make proper provision for filling the position. This requirement may be waived by department heads where adequate provision can be made in a shorter period of time. All resignations shall be in writing and must be filed with the department head. The department head shall furnish a copy of the accepted resignation to the employee and the manager for their records. In the event the employee is a borough officer, the resignation shall be forwarded to the assembly for appropriate action.