Changes in Key PersonnelThere are three primary functional areas of a construction business, and each must be adequatelymanaged and supervised in a successful contracting enterprise. The primary functional areas are:• Estimating and sales (getting the work)• Construction operations (doing the work)• Administration and accounting (managing the business)In every successful construction enterprise, a top-level manager is responsible for each of theseareas or, in many cases, one person is responsible for all of them or two people share theresponsibilities.