Formal Organisation refers to the organization structure which is designed by the management to accomplish a particular task. It specifies clearly the boundaries of authority and responsibility and there is a systematic coordination among the various activities to achieve organizational goals. 

Advantages of Formal Organisation include: 

1. It is easier to fix responsibility since mutual relationships are clearly defined. 

2. There is no ambiguity in the role that each member has to play as duties are specified. This also helps in avoiding duplication of effort. 

3. Unity of command is maintained through an established chain of command. 

4. It leads to effective accomplishment of goals by providing framework for the operations to be performed and ensuring that each employee knows the role he has to play. 

5. It provides stability to the organization. This is because behavior of employees can be fairly predicted since there are specific rules to guide them. 

Disadvantages of Formal Organisation: 

1. The formal communication may lead to procedural delays as the established chain of command has to be followed which increases the time taken for decision making. 

2. Poor organization practices may not provide adequate recognition to creative talent, since it does not allow any deviations from rigidly laid down policies. 

3. It is difficult to understand alumna relationships in an enterprise as it places more emphasis on structure and work. Hence, the formal organization does not provide a complete picture of how an organization works.