What to do about the extent of unregulated informal employment and the size of the shadow economy is a dilemma that has been gaining urgency, particularly in Europe's periphery. The forces that accompany globalization put a premium on mobility and skill-renewal. Rapid population ageing will require that people work longer and be far more productive. To achieve this, social and economic institutions have to be more pro-employment, encouraging greater participation in the formal economy. And looking ahead, public financial resources will be increasingly scarce, giving urgency to measures that...