Knowledge Intensive Business Services and Urban Areas : An Analysis of Localization and Productivity on Italian Data

We analyse the geographic localization and the productivity of knowledge-intensive business services (KIBS) in Italy, using both census data and balance-sheet data at the firm level. We find that KIBS are generally agglomerated in urban areas where they attain significantly higher labour productivity levels. Urban productivity advantages are found to be strongly associated with the local availability of human capital and to standard proxies of Marshall-Arrow-Romer and Jacobs agglomeration economies. Forward demand linkages and some factors impacting on the thickness of the local labour market also appear to be relevant. On the whole, the set of explanatory factors considered could explain the entire urban productivity premium estimated for Italian KIBS firms