A company is a legal entity, and can be set to perform economic and any other activities. The social contract determine the internal relations between members of society, and all thanks to an act of the social contract. Fundamental rights and obligations of members of the public company refer to the input role in society, and the size of the role of members is determined by contract. A member of the public company shall not, without the consent of all other members to keep jobs that fall under the subject of business, or they may participate in no other company. In a limited company, compared with other companies, there are two types of members whose position is different in relation to their responsibility. When talking about the management of the company, in this situation, the limited partnership managed by general partners as limited partners are not authorized to manage the company's business. All holders of shares in the joint stock company acquired a basic membership rights in the company, and all other rights resulting in its content from different genera. And finally, with a limited liability company fundamental principle refers to the fact that all members of a mandatory role in money paid in proportion to their commitments to business interests.