Daniel Cohen is a Research fellow and former co-director of the International macroeconomy programme at the CEPR, and Research fellow at CEPREMAP, Paris. He has been a Consultant at the World Bank (1984-1994) and the IMF (2001 and 2002), and was a Visiting fellow at Harvard University in 1981-82 and 1983-84. Pietro Garibaldi is the Head of Labour Studies at the Fondazione Rdolfo Debenedetti, Research fellow in the Labour Economics programme at the CEPR, Research Fellow at the IZA in Bonn, Research fellow at Igier, Milan, and Consultant on Labour Issues for the Italian Ministry of the Econom...