(4)Member States have introduced provisions, including requirements, relating not only to safety of buildings and other construction works but also to health, durability, energy economy, protection of the environment, economic aspects, and other important aspects in the public interest. Laws, regulations, administrative measures or case-law, established either at Union or Member State level, concerning construction works may have an impact on the requirements of construction products. Since their effect on the functioning of the internal market is likely to be very similar, it is appropriate to consider such laws, regulations, administrative measures or case-law as ‘provisions’ for the purposes of this Regulation.