At the organization of the credit union it is important that people know each other and know the extent to which each of them is trustworthy. 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. The relationship of shareholders with credit union are not client-based, they are co-operative, based on different principles and standards, in particular, on the principles of the law of obligations. As of the January 1, 2012 the national associations and confederations unite more than 196 million members participating in the 51,013 credit unions in 100 countries. Credit unions are competitors of savings institutions, adding interest on deposits of members. This applies to the shares, as well as to additional funds transferred to the account in the credit union. 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. In some cases, the initiators of credit unions can be trade unions, associations such as social support centers and others. Standards by which credit unions build their work do not coincide with the standards and regulations of consumer cooperation of the usual type. A potential new member of a credit union must submit a recommendation of shareholders in which the referee becomes a warrant of a future member of the credit union.