The Mayor may make temporary transfers of employees, not to exceed 120 days in any calendar year, from one appointed office or department to another, except the Proprietary Departments, to relieve temporary shortages in personnel, or to meet temporary demands for additional employees caused by temporary or seasonal requirements in any office or department. The Mayor shall notify the City Clerk at the time the transfer of employees is made, and the City Clerk shall notify the President of the Council, the Director of the Office of Administrative and Research Services and the Board of Civil Service Commissioners of the transfer. The compensation of employees so transferred shall be a charge upon the office or department to which the employees are transferred for the period of the transfer. In the event of objection in writing to the temporary transfer by any of the appointing authorities involved, the Mayor shall determine whether or not the transfer shall be made.