Among the constitutional sources of the law of the commonly binding law, the legislature has also included acts of local law. They fall within the scope of the executive regulations for categories of sub-statutory acts and can only be issued on the basis of and within the limits of the statutory mandate, but without explicit “executive” character in relation to statutory regulations, as is the case with implementing regulations. The specificity of local acts is expressed in the fact that they are acts of lawmaking of a universally binding nature, but they are issued by public administration bodies rather than by legislative bodies. Their establishment is an expression of the so-called decentralization of lawmaking. The legislator authorizes local government bodies to act as local authorities, as well as the voivodeship and local government bodies of the non-self-government.