This paper deals with the theory and practice of termination and breach of professional duty in Croatian civil service law. The insight into the proceedings, procedures, ethics and sanctions for unwanted behaviour and actions are of great importance for Croatian bureaucracy, as well as the country’s legal system. Therefore, it is important to try and bring it closer to the public. The paper is divided into several sections. In these sections are the explanations and descriptions of the most important institutions and the participants in this process, the civil servant as an employee and the country as the employer. It mentions the moral standards which a civil servant should hold as a personal behavioural criterion to protect the reputation of his service, and to reduce the number of complaints for unethical behaviour, which was a hundred and ninety-six in the year 2020. This way the breaches of professional duties, which can be light or severe, would be brought down to a lower instance then we can witness today. To support this, there are several examples of sanctions for the breaches of professional duty, some of which are case laws. The termination of professional duty according to the current Law can happen by agreement between the parties, expiration, dismissal or forced. The paper contains examples I have managed to collect, for which I would like to thank the Commercial court and the Administrative court chairmanship for the trust they have showed me, as well as my mentor Prof. dr. sc. Mario Vinković, who carefully checked the content and gave the guidelines necessary to help write this paper.