The organizational structure differs because of the nature of work different organizations deal with and their methods of dealing with problems. The formal structure of an organization depends on a lot of different things. Communication and decision making are the two crucial factors that determine the structure. In some organizations everything is handled by the administrative few and orders are communicated from a higher level of hierarchy to a lower level of the organizational employees. Free flowing of conversation related to work and participation of different levels of the work force in decision making constructs another organizational structure. The first structure described before is called the mechanic structure and the second one is organic structure.
