E-government services have become powerful tools in government organizations by offering different information instantly and effectively. Specifically, information and communication technologies have become very useful tools in developing the ability of staff to accomplish jobs effectively and efficiently. Unlike developed countries which face only few issues in the adoption of e-government services, developing countries encounter several adoption problems from the stakeholders’ point of view. Government-to-employee (G2E) is one aspect of e-government that covers activities and services that transpire between government units and their workers. This paper identifies the factors that improve the adoption of e-government services by employees in developing countries. The selected success factors (website quality, awareness, computer-self-efficiency, IT workforce capability and training) extended with Unified Theory of Acceptance and Use of Technology (UTAUT) – an extensively used model. The final conceptual model is proposed and presented in this paper.