The efficient and effective internal communication in organisations is an important factor that contributes to the level of satisfaction of all employees. The efficient internal communication improves the reputation of an organisation, which then results in better organisational results. Furthermore, the paper explains to what extent the communication represents an important segment that we cannot function without in either our private, social or business life. It also describes the way non-verbal communication supplements the verbal communication. Since working people are a majority, every organisation has a specific method of communication because it is linked to specific products and services. Communication with the external associates is also very important for the progress of the entire organisation. Since this paper covers the topic of the internal communication between health care providers, it will explain the communication between the workers of the Department of Psychiatry of University Hospital Center Sestre milosrdnice. The internal communication between the health care providers is defined by a specific terminology and it is an important segment in the process of communication. Every worker uses their skills and knowledge to contribute to the work of the entire team. The information received from every team member helps in creation of a big picture when it comes to patients and their status and as such, it is used to determine the most appropriate method of treatment. The paper includes a preliminary research of satisfaction with the internal communication in the segment of health care. The research was implemented by means of an anonymous survey voluntarily filled out by the majority of workers at the Department of Psychiatry of the University Hospital Center Sestre milosrdnice and results of the survey determined high level of satisfaction with internal communication.