Contract theory qualifies legal origins theory by focusing on codified default rules, which ease the conclusion of enforceable contracts. We have selected 10 economically important codified contract types containing default rules and 8 countries particularly relevant as mother countries of legal origins, financial centers or newly industrialized economies (France, Germany, Japan, South Korea, Switzerland, Taiwan, the UK and the US). We exclude countries having received their laws as colonial “transplants” and countries in legal transformation. The economic impact of default rules is detectable by econometric analysis based on panel data inference over prolonged periods (1870-2008). Codified default rules favor economic performance, the higher their number the better. The results are controlled for time and country fixed effects, confirmed by counterfactual simulations and robust. We also test whether the presence of all ten contract types can compensate the absence of financial center advantage, and find that they do so in the civil law mother countries and the two newly industrialized countries of our sample. The Swiss case shows that the cumulation of default rule advantage and financial center advantage results in superior economic performance. While qualifying legal origins theory, our results strongly confirm institutional economics in its core of contract theory.

Work significantly affects human life and health. Overworking may decrease the quality of life and cause direct economic losses. Technological innovations encourage modernization of firms' capital and improve labor productivity in the workplace. The paper investigates the optimal individual choice of work intensity under improving technology embodied in new equipment leading to shorter lifetime of capital goods (obsolescence). The balanced growth trajectories are analyzed in this context to find out, in particular, how the optimal choice of work intensity is tied to the rate of embodied technological change. The impact of embodied technological advances on the work/life balance problem is discussed and their macroeconomic consequences are highlighted.

We study optimal sustainable policies in a benchmark logistic world (where both population and technological progress follow logistic laws of motion) subject to a pollution ceiling. The main policy in the hands of the benevolent planner is pollution abatement, ultimately leading to the control of a dirtiness index as in the early literature of the limits to growth literature. Besides inclusion of demographic dynamics, we also hypothesize that population size affects negatively the natural regeneration or assimilation rate, as a side product of human activities (like increasing pollution, deforestation, ...). We first characterize optimal sustainable policies. Under certain conditions, the planner goes to the pollution ceiling value and stays on, involving a more stringent environmental policy and a sacrifice in terms of consumption per capita. Second, we study how the sustainable problem is altered when we depart from the logistic world by considering exponential technical progress (keeping population growth logistic). It's shown that, as expected, introducing such an asymmetry widens the margins of optimal policies as sustainable environmental policies are clearly less stringent under exponential technical progress. Third we connect our model to the data, using in particular UN population projections.

This paper solves a second-best problem where a government has in particular to choose whether to tax financial inflows (capital con- trols) or not, and when. A multi-stage optimal control technique is used to this end. First, it is shown that it is optimal to switch in finite time from capital controls to full financial liberalization (zero tax on capital inflows) whenever a measure of total wealth is above a cer- tain threshold. In particular, a too large initial debt makes financial liberalization sub-optimal. Second, our analysis suggests that capital controls should be used countercyclically: booms should be responded by more financial liberalization while recessions should rather lead to more stringent capital controls. Third, when public expenditure is chosen in order to maximize social welfare, financial liberalization is not unaffordable only for poor countries, even wealthy countries might find it optimal to implement capital controls if they aim to keep a large amount of public expenditure. In short, the preservation of the welfare states might require a more frequent use of capital controls.