Gianni Arrigo
The provisions of the Treaty on the European Union (EU) and, in particular, the Agreement on Social Policy (ASP) attached to the Treaty, envisage subsidiarity in social policy as a complex and innovative legal principie, which lies at the very roots of a di-versification of EC and national legislative and contractual sour-ces, at various levels, designed to regulate working conditions in the EU.
The ASP contemplates a «dual subsdiarity» in social policy:
A) a vertical subsidiarity concerning the sharing of regulatory powers between the Community and Memeber States;
B) a further horizontal subsidiarity, wich gives rise to a proce-dure of cooperation by the social partners towards establishing re-gulatory acts (at Community level) and a procedur of incorpora-tion of directives (at national level) or substitution of the regula-tory activity of European Community insitutions with collective autonomy. This is a new procedure for forming European Com-munity law based on collaboration between Community institu-tions and the social partners. The ASP defines the legal nature of such collaboration and its effects at both Community and national level