Credit unions perform the function of social protection in a vital for people sphere of financial services. They care about improving the financial literacy of the population, are working on the formation of their members and their employees. Credit union services are available only to its shareholders. 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. Until the 70's there was a proliferation of the U.S. credit unions due to the increase of their number and the number of shareholders, although it must be acknowledged that there was also and a qualitative growth. Contributions from of shareholders in credit unions in no way can be considered as borrowed funds, they come from the shareholders and for the shareholders and can not be used to provide services to third parties. The supreme body of the World Council of Credit Unions is the Assembly, which elects the president and the board of directors of WOCCU. Unlike banks credit unions limit their activities to a closed circle of people.