Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. 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. Credit unions historically formed as a special form of social support, initially taken upon themselves the social mission of protecting the interests of citizens in the field of financial services. Credit Union - one of the most attractive financial institutions for the public being a non-profit alternative to banks. 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.