After the fall of state-socialism, efforts were made to build democracy by creating civil society organizations (CSOs) and forming independent nonprofit sectors across Central and Eastern Europe. However, most of these efforts ignored the mass organizations, state-sponsored interest groups, and quasi-independent associations in existence for many years. To understand how the transition affected existing associations and the forms of volunteerism they promoted, we investigated changes in the Czech Union for Nature Protection (ČSOP), an organization that has endured since 1979. We find that rather than retaining its emphasis on classical modes of voluntary action and participant interaction, ČSOP is favoring professionally managed activities designed to attract financial support. The case suggests that some of the participatory practices and collectivist norms advanced by associations in socialist times are being weakened as these groups attempt to secure the resources necessary to survive.