Employment categories in the air transport enterprise are as follows:
- General administration: includes central and regional management staff (e.g. finance, legal, personnel, etc.) and boards of directors; the management staff of specialist departments (operations and traffic, aircraft, air traffic control, runway and terminal construction and maintenance, emergency services) are excluded but are taken into account in the statistics specific to each of these services;
- Operations and traffic: cabin and ground crews (excluding flight deck staff) and associated central and regional offices, including tourism, advertising and terminal operations;
- Aircraft: flight deck staff, maintenance and inspection staff and associated central and regional offices;
- Airport: air traffic control staff, terminals, runway and other airport facilities construction, maintenance and supervision staff, ground handling staff, emergency services staff;
- Other operations: passenger and freight services, freight shipment services, etc.