Tradable White Certificates (TWC) schemes, also labelled Energy-Efficiency Certificates schemes, were recently implemented in Great Britain, Italy and France. Energy suppliers have to fund a given quantity of energy efficiency measures, or to buy so-called "white certificates" from other...

Social insurance programs typically comprise sick leave insurance. An important policy parameter is how the cost of sick leave are shared between workers, firms, and the social security system. We show that this sharing rule affects not only absence behavior, but also workers' subsequent health....