The master’s thesis discusses the topic of Assessment of Civil Servants. Human resources, that is civil servants and employees have a key role for the professional and efficient functioning of state administration and the quality of service. Special attention is paid to the system of assessing civil servants and the assessment process itself, as it is the basis for rewarding and professional development of civil servants, but is also the basis for punishment when failing to deliver the planned results. The main basis for handling civil servants' assessment lies in the legal regulations that served as the principal source of literature for this master’s thesis. For an easier understanding of the issues of assessing civil servants, the thesis presented the analyses of the system of civil servants and employees in Croatia in the period from 1994 to 2016, as well as the analysis of the system of assessing civil servants and employees in the units of local and regional self-government in the period from 2001 to 2016. The process of assessing employees in the private sector was also addressed in order to observe similarities and differences in the assessment process between the public and private sector.