The main categories of employment being considered are:
-- 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, traction and rolling stock, ways and works) are excluded but are taken into account in the statistics specific to each of these services
-- Operations and traffic
Station staff, train crews (excluding locomotive crews) and associated central and regional offices. Includes tourism and advertising.
-- Traction and rolling stock
Locomotive crews, workshop, inspection staff and associated central and regional offices.
-- Way and works
Permanent way maintenance and supervision staff.
-- Other operation
Passenger and goods road services, shipping services, electric power plants, hotel staff etc..