This paper investigates graphically and econometrically the relationship between the relative positions, in terms of value added and relative prices, of Belgian manufacturing and market services in the European Union over 1970-2005. Relative prices are then decomposed into relative unit costs of factors of production. The analysis goes further by replacing relative unit labour cost with relative hourly wages and relative productivity. Finally, relative produc-tivity is replaced with relative capital deepening, relative labour composition effect and relative total factor productivity. All data are coming from the EUKLEMS database, March 2008 release.