This thesis deals with sanctioning of legal persons under the Act No. 418/2011 Coll., on Criminal Liability of Legal Entities and Legal Proceedings against them (hereinafter referred to as "Act"). The main part of the paper consists in detailed analysis of the sanctions that may be imposed on legal persons. The main goal of the thesis was to evaluate this relatively new area of legislation which has not been amended to this day in any significant way. Special focus was given to the evaluation of whether the effective legislation in question is complex, sufficient and flawless or whether any amendment is necessary. The preface introduces the main topic, goals and the structure of the thesis. The thesis in general is divided into four parts. ...