Immediate effect of the opening of insolvency proceedings, the suspension of any action against the debtor is imperatively imposed by the law, and stops them at the stage in which they were, including during forced execution. Keywords:

The concept of „undertaking” is used in several branches of law, but in each of these branches of law the notion of „enterprise” has a different meaning. This paper aims to summarize the definitions and characteristic features of the „enterprise” in the meaning of civil law, competition law and fiscal law, and to present the relevance of these definitions to the respective branches of law.