Another definition would be: the set of variations of structural order organizations who suffer and that translates into a new organizational behavior. Changes are caused by the interaction of forces, these are classified into: internal: are those that come from inside the Organization, arising from the analysis of organizational behavior and are presented as alternative solutions, representing equilibrium conditions, creating the need for structural change; is example of them technological adjustments, exchange of methodological strategies, changes of policies, etc. External: are those that come from outside of the Organization, creating the need for changes to internal order, samples of this force are: the governmental decrees, standards of quality, limitations in both physical and economic environment. Definitely modern management must be very attentive to the effects of the changes that this generates, know motivate everyone involved in it, taking into account that the here and the now that it introduces many changes and as indicated by Kings and Velasquez, the paradigm seems to be who is not suited to the change will die on the road. There is a consensus that change is a reality, that affects strongly, indeed the only thing solid to which it is possible to cling, is the certainty that anything that happens today, will have already changed the next day.The commitment is not to discover a truth that so far has escaped to others, if not to generate new practical action capabilities. Environment in general which involves organizations this constantly moving and dynamic, it requires a high degree of adaptability of survival. They must deal with an unstable environment of constant change.