This thesis deals with communication and interpersonal relationships in the company, and their importance in every company. The company includes a larger group of people, ie employees whose main goal is to fulfill certain tasks. It is for this reason that the need for good communication and interpersonal relationships is noticed. The success of any business depends on the quality of communication and interpersonal relationships. Managers should be in charge of this in the first place, but it is also necessary for employees to be educated and know how to communicate with respect for each other. The goals of the paper are to show that without good and quality communication and interpersonal relationships, work tasks can hardly be performed. In a company where interpersonal relationships are disrupted, there is stress and anxiety among employees. In such an environment, it is difficult to achieve positive results. Also, when there is discord in the company, conflicts often occur. It is important to recognize the conflict in time and resolve it so that it does not escalate into a conflict with a negative outcome. In such cases, it is important to use quality communication and interpersonal relationships.