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. In the U.S., credit unions have a clear organizational structure. All credit unions belong to one or the other parent credit union (there are 35 of them in the U.S.). In recent decades, many credit unions began to resort to such form of service as Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. When organizing the credit union it is important that people know each other and know the extent to which each of them is trustworthy. Typically new members of the credit union become citizens having suretyship or recommendations from their friends - members of the credit union. 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. The relationship between credit unions and shareholders arise from the membership and are not customer relationship.