Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Representative organization, leading the coordination work in the field of development of both global and national credit union movement is the World Council of Credit Unions (WOCCU) established in 1971 (headquartered in Madison, USA). 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. 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. The supreme body of the World Council of Credit Unions is the Assembly, which elects the president and the board of directors of WOCCU. In the UK, credit unions are a source of financing of people groups. This tool is not widely used. Credit unions, like today's credit unions, emerged in the 19th century in Germany as a result of crop failure and famine.