Membership in the credit union is voluntary and is open to all citizens bound by with joint work or residence, who wished to create a credit union to use its services and are willing to take on relevant commitments and responsibilities. Borrowing rate for the credit union is a source of income to cover the administrative costs. All excess funds are returned to members in the form of dividends on savings. Cooperation between credit unions, how they would not have been named, took place always, from the moment when the movement moved outside one credit union. International cooperation has been particularly felt since the days when Alphonse Desjardins began the activity on development of credit union movement in North America. The value of credit unions is not limited to the role of the economic agent - they are an important element of the social structure and a factor of social stability and progress. The relationship between credit unions and shareholders arise from the membership and are not customer relationship.