The role of Parliament has been fundamentally changed by the following factors: 1° the growing technicality of society, 2° the growing influence of administration and the executive, 3° the new forms of democratic practice, 4° the management of political parties. In practice, the legislative function turns more and more into a control of the general objectives of the law rather than of the technical and juridical aspects. Besides, it is important to examine, from a constitutional point of view, the different forms of delegation. The control of both executive power and ombudsfunction remain the basic tasks of Parliament. The technical means, needed to perform these tasks, have therefore to be considerably improved. Beside the evolution of these two classical functions, it is vital to meet the growing power conflicts between government, parties, social partners and Parliament by creating new patterns of deliberation. To maintain the parliamentary system it is essential to carry through such constitutional reforms as will prevent arbitrary dissolution of Parliament.