The goal of this paper is to identify four types of voluntary failure by L. M. Salamone in Czech public-serving non-governmental organizations (NGO's) and to determine extend of their display by studying of the development of one particular organization and presence and dynamics of these failures. The paper is a case study of the NGO spolek Naděje which mostly works in the field of social services across the area of the Czech Republic. This organization is examined by predefined indicators which were chosen for all four types of voluntary failure. These are philanthropic insufficiency, philanthropic particularism, philanthropic paternalism and philanthropic amateurism. The paper consists of five parts. The theoretical part introduces the key concepts and theories for this paper, fundamental definitions of the civil sector, theory of the state and market failure, a role of the civil sector and brief characteristics of public-serving NGO's. Last but not least there are described four types of voluntary failure of Salamone. The next part presents the methodology of the study for which it was chosen strategy of the research, i.e. case study of one public-serving NGO, and research indicators. Finally, the empirical part includes the research which analyses the dynamics of the development of researched...