The Israeli government launched a 10-year program to build 250,000 sqm of modern buildings for its head offices in Jerusalem and in several regional centers. The physical design of these intelligent buildings supports greater efficiency and flexibility in government work, while providing a better environment and improved quality of life for office workers. The participatory design process included active involvement of user representative committees in physical design, and a preparation program for workers to the physical-organizational change in their work life. This two-dimensional process, which helped lay the basis for a future POE, was essential in light of the organizational structure of government offices. The presentation will focus on methodological issues of the participatory design process.