The purpose of this trial is to examine which contracts may serve as the source of the criminal justice obligation. The discussion focuses on several questions: first, can a contract serve as an obligation of action only if it is valid or can a null contract also serve as a source for such an obligation? Second, can a legally valid but non-binding contract (i.e., only financial compensation can be recovered in the event of an infringement) serve as a criminal obligation? Can. B Can a human services contract serve as a source, since it is accepted that such a contract cannot be applied specifically? Finally, can any contract, when it accepts a contractual contract, serve as an obligation for criminal action or can it serve only as a source of certain types of contracts? In this context, the question arises as to whether a contract that benefits a third party (where the third party is the victim) can serve as the source of the necessary duty to act and, if so, under what conditions? Criminal jurisprudence makes a clear distinction between an act that causes damage and an omission that causes damage. In other words, to convict someone of manslaughter, any act that has led to the death of a person will be sufficient as long as the other necessary elements of the crime, such as causation and intent, are there. However, in order to convict someone for omission, it is necessary to recognize the accused`s duty of action and to prove that the breach of that duty resulted in the death of the victim. The duty to act may arise from criminal obligations (for example. (B) parental obligations to their children) or civil rights, but it is generally accepted that such an obligation may also arise from a contract. (1) This is possible in certain circumstances when a person violates his contractual obligation to act, resulting in the death of a person, to convict the person of involuntary non-manslaughter. Contract law is the backbone of civil jurisprudence and the emphasis is on the treaty itself in all its glory. Both the literature and the case law have looked at fundamental issues of the treaty: what gives a contractual effect? What`s with him? What are the conditions for its creation? When can it be invalidated? What are the facilities in the event of an infringement? However, some of the issues that arise in contract law are fundamentally related to criminal jurisprudence, one of the fundamental pillars of public law, in the context of criminal liability in the event of non-act – an omission.