The subject matter of the presented thesis was the analysis of the regulations concerning overtime work. The knowledge of these regulations is essential for every employee in order to defend themselves effectively from- unfortunately - frequent infringement of their rights.The thesis consists of five chapters. In the first chapter the notion of labour time with regard to the labour code was described. The legal acts which regulate this subject matter and basic terms referring to the theme were presented. The regulations concerning overtime work from before the amendment in 2003 were also dealt with.The second chapter concerned the two premises in which overtime work is acceptable, namely an emergency operation and failure removal and specia...