This paper aims to identify the need for Public Sector Information Systems (PSIS), a particular field of the IS discipline dealing with the design, redesign and evaluation of E-services in public sector organizations. A longitudinal and empirical study of an E-service project in a public sector organization in Bangladesh reveals that without addressing underlying organizational problems, taking account into organization contexts, statutes and practices and considering the organizational reality and users’ capability; it is difficult to implement E-services in public sector organizations. This paper argues that a particular information system (public sector information systems (PSIS)) has the potential to lead to better design and implementation of successful E-services in public sector organizations.