Employee is engaged and shall serve as President and Chief Executive Officer of Employer and, as may be requested by Employer from time to time, any other direct or indirect subsidiaries of Employer that may be formed or acquired. In addition, Employee shall have such other duties and hold such other offices as may from time to time be reasonably assigned to him by the Board and consistent with the office of President and Chief Executive Officer. These services shall be provided from offices located in Oak Brook, Illinois, or such other location as may be mutually agreed.