Because of their specific characteristics, social services are suitable for a procurement-related competition in a social market economy only to a limited extend. Against this background, the doctoral thesis examines the applicable public procurement law regarding the awarding of public contracts and concession contracts regarding the procurement of social services in Austria in order to identify the existing peculiarities, weaknesses and political controlling options. At the beginning of the doctoral thesis the fundamental terms are determined and the relevant legal basis of European and national law are outlined. The main part analyses the content of the main provisions of the national public procurement law (§§ 141 and 11 BVergG) as well as the wide scope of action of the contracting authorities in the award procedure in the specific context of public procurement of social services. Furthermore it gives an overview about the main objectives of the ongoing European public procurement reform process and identifies the relevant provisions of the new public procurement directives (Directive 2014/24/EU on public procurement, Directive 2014/23/EU on the award of concession contracts).