This contribution deals with the consequences of European integration for the relation between civil servants and policians. Data of Belgian senior servants who are not involved in European policy networks are compared with data of Belgian officals who are in charge of European negotiations. This comparison shows firstly that officials are more central in European policy networks than in national policy networks. Politicians have only a limited and indirect access to these European networks. Secondly, the more civil servants are involved in these European policy networks, the less their political alienation. Furthermore, the organisational self-esteem do not affect the communication networks among civil servants and politicians. Finally, alienation and self-esteem do not affect the communication networks among civil servants and politicians. The exposure to politics and anciennity seem to be more important predictors.