This study aims to analyze the characteristics of the relationship between cooperatives and their associates. Cooperatives are societies that exist for solidarity and equality among their members. For that reason, ―cooperative action demands those characteristics and excludes any lucrative purpose, in addition to preventing decisions that are not made through deliberation and permitting the use of the services in conformity with the general decisions. Thus, associates enjoy a dual quality, which is acting as users and managers of the business. Also, in light of the autonomy of the members and the non-existence of inequality, the principles of vulnerability and hypo-sufficiency should not be applied. Therefore, it is necessary that the analysis of the new concept of hypo sufficiency, values the will according to the dignity of the human person, allows an individualized treatment and also guarantees the continuity of the society and the income of the members. Otherwise, there will be an excess of protection without observing the particular characteristics of cooperativism.