Abstract
This paper deals with labour law and social security law in the Czech Republic as twin branches of law. Labour law deals with not only rights and duties of parties involved in the execution of dependent work, but also with related legal relationships.
If work performed by a natural person for another natural or legal person bears signs of dependent work, it must be performed within a labour law relationship. A key principle of labour law is the principle that "everything which is not forbidden is allowed." Labour law is traditionally divided into two parts, individual and collective labour law.
Social security law is closely related to labour law, sometimes they constitute one unit (social law). Social law provides security related to health and social obstacles that prevent work execution.
Social law is a joint term for both legal branches and is also the subject of education at certain German and Austrian universities. The opinion of the author of this paper is that it is a separate legal branch with both private and public elements.