The commencement of mobbing occurred in the end of the 19th century, with its increasing presence in the working environment. Mobbing is a serious social problem harming an individual, and the overall society. Moreover, individual theorists of mobbing differ in the common points of such phenomenon, due to their initiation and termination. Such actions resulting from the preceding, influence communication, maintenance of social relations, personal reputation, quality of the professional situation and health. The purpose of this dissertation is to point to out the dangers of mobbing and raise an awareness of its growing presence in a working environment. Additionally, it will be discussed that mobbing is a significant source of stress, and disturbed interpersonal relationships lead to reduced efficiency, loss of time and increased costs. Mobbing causes various losses, and the only real solution is to prevent mobbing on primary, secondary and tertiary levels.