The measurement of the hidden economy is necessary to ensure exhaustiveness of Gross Domestic Product and thus be able to conduct comparisons between countries. The part of firms activity that is not declared to tax authorities inevitably evades statistical observation. In France, it is possible...

The measurement of productivity is a complex task. The OECD has recently released a comprehensive manual or guide to the measurement of industry-level and aggregate productivity. In the fifth article, Paul Schreyer from the OECD and the author of the OECD productivity manual provides an overview...