This guideline outlines a model to describe the tasks performed by the Air Traffic Management (ATM) Technical Staff and the different jobs which they execute. It has been established within the framework of the European Air Traffic Control Harmonisation and Implementation Programme. It will contribute to the harmonisation of the training of ATM Technical Staff in the European Civil Aviation Conference (ECAC) area of competence. The model has been developed by a multinational team of experts from EUROCONTROL, IFATSEA and National Administrations.