E-government system has changed government to citizen interactions. The challange that arises is low acceptance of e-government system by government employees. This study aims to investigate the factors that motivate government employees to use e-government system by constructing a conceptual model based on Unified Theory of Acceptance and Use of Technology and identifying the adopter characteristics using Innovation Diffusion Theory. Validated model, recommend that government should concentrate on the factors of performance expectancy, social influence and facilitating condition and select government employees who are belong to Early Adopter category as the agent of change to influence other employees to accept e-government systems.