This paper points to the importance of quality organization preparation and the people who are doing it for the purpose of implementing organizational changes to minimize the stresses of employees and to increase the likelihood of success in their implementation. Changes are a complex process that requires creative approach and careful planning in which the greatest role and responsibility is on the managers. In order to implement the changes effectively it is necessary to motivate employees for changes, to convince them that they are necessary and that they provide benefits. Each and every organizational change causes some kind of stress among employees. Stress is a state of tension which is reflected in the coping of individuals with unusual requirements, constraints and opportunities. Sometimes it can be positive, but in most cases it raises certain consequences among employees which can be physical, psychological and behavioural ones.