The concept of a family company is not defined in current law. In the case of companies in which members of a family have a decisive influence, it allows only a formal approach. However, in addition to the formal approach, the substance of the company, the specific nature of family interests and values, justify an examination of the company from other points of view, which allow not only the long-term commercial economic activity but also the specific nature of family relationships to be examined on the basis of company law. It is therefore of the utmost importance that family companies should reflect family relationships, the need to operate intergenerationally and protect the family nature of the company, and ensure the family's long-term prosperity. The combination of the formal and substantive elements makes it possible to conclude that family companies are special legal entities in which a particular family community has a decisive influence, has and represents specific interests and values, among which the protection of family assets, the aim of intergenerational operation and the safeguarding of the long-term well-being of family members are to be highlighted. The Civil Code provides for multiple means of achieving these interests, in addition to the classic instruments of company law, including the possibility of shareholders’ agreement.