This volume is part of a wider effort led by the OECD Directorate for Science, Technology and Innovation to provide new cross-country evidence on employment dynamics and productivity based on firm-level micro-data. In this context, the OECD is co-ordinating two distributed micro-data projects – DynEmp and MultiProd – that rely on micro-aggregated data from a broad cross-section of countries for comparable cross-country analyses on employment dynamics and productivity, respectively (see www.oecd.org/sti/DynEmp.htm and www.oecd.org/sti/ind/MultiProd.htm). The innovative methodology applied by the OECD allows for the collection and analysis of harmonised data based on confidential administrative sources or official representative surveys. Both DynEmp and MultiProd rely on the active participation of a network of national experts who have expertise in these different areas and who have access to the relevant micro-data sources in their respective countries.