The report studies events that took place between May 2005, when the Norwegian parlament decided to reform the Norwegian welfare administration, and June 2006, when the new state agency called NAV was established. The report provides information about the NAV reform’s background and the affected state agencies. Then the report studies how the Government organized and followed up the reform process during the year-long transition phase, including its establishment of a temporary directorate called NAV interim. The report studies how this NAV interim constructed an organizational structure for the new welfare administration (NAV) and how it made a division between the NAV directorate which would be responsible for strategic tasks and a «directorate within the directorate», NAV Drift og Utvikling, which would be responsible for operative tasks at the national level. In conclusion the report discusses patterns of influence in the interim process, why the former state agencies entered the process with different attitudes, negation aspects in the process, NAV in a reform context, and the reform dynamics in NAV beyond the interim phase.