This master dissertation is focused on specific problems about social cooperation with a family. The main aim of the master dissertation is to describe specifics which are experienced by social workers while cooperating with families who are treating their children badly, some of them are even abusing or negleting them. Teoretical part is mainly focused on existing family itself and its characteristics, then on reasons of rising violence are mentioned as well as procedure and law adjustment of administrative authorities of protection of children. Description of individual specifics of social work is mentioned, too. In the practical part I carried out semistructured interview with workers of administrative authorities of protection of children in The Region Vysocina. This was done in order to aim rising up of the quality of my research. During the research there was found out that the most used specific teories and techniques are interview, observing and active listening which is being considered as the basics of their work. The other results show that workers work while using the specific methods of approach focused on their tasks and attitudes to the client. We can see this simply in the answers of the workers who admited their listening to the client and having a real interest in him or her while working with him/her step by step. They also help their clients to work on their tasks and problems which are being solved and the aim is to be implemented. We can also find using the psychosocial approach in their answers. This approach is focused on social conditions and the way they work with a client, which means they try to solve the problem by the client himself/herself. In accordance with these facts there is learnt that it is not possible to specify a theory or a method which would be the most effective while working with a family. Some of the theories are used at the same time together, they are also conected very closely or are followed by each other. Having done all this can give the worker's job better and complex view on situations in which the client lives and so there is an option of solving the state of affairs.