Studying the administrative infrastructure of the EU is an intriguing
affair. Comitology committees, in particular, are significant indicato
rs for analysing and assessing the evolution of the EU's administrativ
e system. Relevant integration-related theories, however, offer severa
l diverging analyses and assessments of their function and significanc
e. Some of the existing empirical data denote considerable growth in a
dministrative participation and a significant differentiation of proce
dures and forms, indicating a considerable Europeanization of national
administrations. Insights into the behavioural patterns within commit
tees indicate an interactive style in which the fundamental constituti
onal issues and the exact legal form are controversial, but where dail
y routine is characterized by business-like workings based on technocr
atic expertise and camaraderie, and geared to consensus among civil se
rvants from several levels. Comparing realist, federalist, neo-functio
nalist and functionalist approaches, as well as erosion and governance
views, the evolution of comitology committees can best be described a
s an indicator of a multi-level fusion process in action, leading to a
yet undefined new stage in the evolution of West European states.