The services sector encompasses the following industry classifications as defined by the OECD ISIC revision 3: wholesale and retail trade, repair of motor vehicles, motorcycles and personal and household goods (G); hotels and restaurants (H); transport, storage and communications (I); financial intermediation (J); real estate, renting and business activities (K); public administration and defence, compulsory social security (L); education (M); health and social work (N); other community, social and personal activities (O); private households with employed persons (P); extra-territorial organisations and bodies (Q) (OECD Glossary 2006).
Knowledge-intensive services are defined as: education, health, postal and telecommunications, finance and insurance and business services (excluding property services) (OECD Science, Technology and Industry Scoreboard 2005);
Tradeable Knowledge-intensive Services are defined as: education related travel services, royalties and license fees, total confidential items, as well as communication, construction, insurance, financial, computer & information, Government, other business and personal, cultural and recreational services (Source: DSDT).