The thesis deals with coaching as social work tool and with its ethical aspects in relationship to individual. It is divided into three parts. In the first part, I define the coaching itself, as well as its solution and its types. I also distinguish the coaching from different types of social work, such as counselling and therapy; then I set the coaching into social work helping scope. The second part is focused on the relationship between the client and the helping worker while using coaching. Here I present the relationship paradigms, the helping worker aspect (with emphasis on competence and personal disposition) and the client aspect (with focus on his conception and his inner world). This part deals with the topic of help and control as well. In the third part I look into ethical aspects that are crucial in the client's and worker's relationship, aspects that follow from the definition of this relationship from the second part of the thesis, such as freedom, dignity, respect, autonomy, self-determination, worker's personality, preferences, responsibility, conscience and power.