See, kas täiendavaid sätteid on vaja, sõltub direktiivi regulatsioonist (normide laadist), direktiivi eesmärgist ja olemasolevate siseriiklike õigusnormide rakendamise viisidest.
If, after the adoption of a harmonisation measure by the European Parliament and the Council, by the Council or by the Commission, a Member State deems it necessary to maintain national provisions on grounds of major needs referred to in Article 36, or relating to the protection of the environment or the working environment, it shall notify the Commission of these provisions as well as the grounds for maintaining them.
