It is common nowadays to observe the multiplication of laws for SSE, even if the scope and number of these are still debated. This trend raises issues about the function of law, as well as the possible contribution of SSE to the debate about the elaboration of law. The immediate difficulty is to measure the number of SSE laws, which must be distinguished from legislation dealing with SSE. The specific purpose of existing SSE legislation is the establishment of a framework that is able to promote SSE and set up suitable policies. Their primary focus is the definition and delimitation of SSE. Given the impossibility of a legal regime applicable to the myriad enterprises included in the SSE category, the umbrella laws dealing with SSE state common principles which may, at least, be useful as guidelines.