Objective of the thesis: The main objective of this thesis is to optimize selected human resource processes and to evaluate the effectiveness of proposed improvements. Work flow and methods used in the thesis: In the theoretical part, the author defines the key concepts by using scientific literature and by consultations with managers of the company, in which the selected processes will be optimized. In the practical part, the author describes and maps the original state of the selected processes at the company and afterwards attempts to improve those processes. The methods of process analysis, process modeling and other standard methods, such as observation, description, interview, measurement and comparison, will be used in this thesis. The expected benefits of the optimization will be defined, various scenarios will be evaluated.