The concepts of mobbing and discrimination are discussed in the article; the notion of mobbing in employee relations is being defined. After the scientific literature analysis there was created a tool to diagnose the discrimination and mobbing in employee relations. Research shows the spreading of this phenomenon in different sectors and economy activities. The growth of heterogeneity and variety as well as the variety itself, which we traditionally call a minority representative, increase the danger of conflicts between groups (cultural, racial, and national). The danger is hidden in negative attitude that can appear because of the society dominating traditions, stereotype thinking, and lack of tolerance to those who are different. Growing variety, the lack of tolerance, the aggressiveness of the society form is the mixture that explodes discrimination in the relations among employees. Discrimination in the relations among employees consists of the processes that take place inside the organization. The main signs of discrimination in the relations of the employees are: group isolation from the community because of differences, negative acceptance of the isolated persons, social isolation, and oppression. The creation of a variety or minority group is connected both with outer and psychological differences. The meaning of discrimination as a dysfunction of the employees’ relations is marked by violence in order to get rid of the victim. At the same time taking to consideration the results of a long-lasting violence to the person, it should be understood as a physical violence the aim of which is to evoke pain, damage the individual. It is important that dysfunctional relations are identified taking to consideration objective and subjective criteria, because interpersonal relations among employees is a variety of communication ways and forms, which create an unfriendly, oppressive atmosphere. Negative aspect of the relations can appear even as a purposeful relation negation, in other words social isolation and the isolation of the oppressed one. That is why it is wise to listen to the evaluation of the oppressed one about the relations he has. In the article the researches of mobbing in Western countries and Lithuania are discussed. Mobbing is analyzed from the aspect of discriminative relations among the employees, the features, which show the transformation of chicanery to mobbing is singled out. An instrumentation to diagnose mobbing as discriminative employee relations was created, the reliability of which was proved by the expert evaluation and high weights of Cronbach alpha. With the help of questionnaire during the exploratory research there were questioned 351 respondents from public and private sector organizations. It was diagnosed that most frequently the actions of mobbing were experienced by the respondents who work in public sector – in the spheres of education and social work and in some business organizations.