In this paper, we present the findings of a case study of the development of a Web-based workflow system in a mineral water manufacturing firm for supporting sales management. The system aims at providing assistance in (i) performing efficient dissemination and management of information and sales documents, (ii) ordering and delivering mineral water, and (iii) improving the control processes. A framework for the development of Web-based workflow systems is proposed. The framework is examined and explained in the context of the case study. Finally, the case study illustrates and highlights the benefits and advantages of the system, which provides better support to teamwork as a result of better communication and monitoring, and which reduces sales cycle times