This work examines the introduction of business-originated concepts of quality insurance which personal social services are confronted with in Europe. The orientation towards this approach should raise professionalism. There is evidence that the specificities of personal social services are not always taken into account when it comes to introducing market values and mechanisms. Thus, the book focuses on the need for more adequate criteria for quality standards of service, whilst considering the preconditions of defining quality. The study uses different European countries for its assessment.