Cooperation  is the main form of social interaction processes of social interaction because it is basically done by a person or group of people aiming to meet the common interests or needs. Start of life in families, between families, and  public.
Cooperation can be divided again into 4 types,
1) spontaneous cooperation, ie cooperation that arise spontaneously.
2) direct cooperation, the cooperation that occurs because of orders from superiors or authorities.
3) Collaboration contract, namely the cooperation on the basis of certain provisions agreed upon for a certain period.
4) traditional cooperation, cooperation that is formed due to conducive tradisiyang system. Working together in a harmony of the elements of the social system.

In simple societies, such as communal societies (tribal) and rural communities, the pattern of cooperation has been institutionalized in almost every job that are mass, such as hunting, fishing, open fields (field for dry rice cultivation) a new, working the fields, repairing irrigation dams, making the pedestrian bridge , held a ceremony of the sacred, ceremonial and religious sepert. In rural communities, the pattern of such cooperation is driven by the motivation to:
1) Facing the challenge of nature that is still "hard"
2) Perform work that requires a bulk power
3) Implement a ceremony that is sacred (holy), and
4) Facing the enemy attacks from the outside.

In msyarakat city already so complex kemasyarakatnya structure, motivation, cooperation is as follows.
1) Obtain the economic benefits effectively and efficiently.
2) Avoiding competition is free, then formed a kind of association or union, both in the field of economics, politics, arts, sports, and others.
3) Promote unity and national unity in the field of defending the country and love of the homeland.
According to James D. Thomson and William J. Mc Events, there are 5 kind of cooperation when viewed from its implementation, they are:
1) Harmony that includes mutual cooperation and mutual assistance.
2) Bargaining, cooperation is carried out on the basis of agreements on exchange of goods and services between two or more organizations.
3) co-optation, which is a process of acceptance of new elements in the implementation of leader or  politics in an organization to avoid instability in the stability of the organization concerned.
4) Coalition, which co-operation carried out by two or more organizations that have similar goals. Coalitions can produce an unstable situation for a while because of the different structures with each other. However, since its main purpose is to achieve tujauan together, then the nature of the cooperation.
5) The joint-venture, cooperation is carried out because of the utilization of specific projects.