Attempts to curb illegal activity through regulation gets complicated when agents can adapt to circumvent enforcement. Economic theory suggests that conducting audits on a predictable schedule, and (counter-intuitively) at high frequency, can undermine the effectiveness of audits. We conduct a...

We uncover a hidden illegal fishing practice: the use of fishing nets with illegally small mesh size. The small mesh prevents nearly all fish of saleable size from escaping the net, but also traps a large number of fish which are too small to be sold on the market and are therefore discarded at...

We investigate how payoff-irrelevant terms can negatively impact relational contracts. In a lab experiment we compare two economically equivalent contracts - a fixed-term renewable and an open-ended at-will contract. Each contract provides partners with full flexibility regarding the length and...

"Implicit Contracts, incentive compatibility, and involuntary unemployment" (MacLeod and Malcomson, 1989) remains our most highly cited work. We briefly review the development of this paper and of our subsequent related work, and conclude with reflections on the future of relational contract...

We study the relationship between outside options and workers' motivation to exert effort. We evaluate changes in outside options arising from age and experience cutoffs in the Austrian unemployment insurance (UI) system, and use absenteeism as a proxy for worker effort. Results indicate that a...

This paper was written as an editorial preface to a "Symposium on Relational Contracts", that was jointly edited by the three authors, and that will appear in the Journal of Institutional and Theoretical Economics (JITE). The Symposium contains eleven contributions to the economics of relational...

We study Virginia's suffrage from the early 17th century until the American Revolution using an analytical narrative and econometric analysis of unique data on franchise restrictions. First, we hold that suffrage changes reflected labour market dynamics. Indeed, Virginia’s liberal institutions...

We study the determinants of 19th century mass migration with special attention to the role of institutional factors beside standard economic fundamentals. We find that economic forces associated with income and demographic differentials had a major role in the determination of this historical...

We explore the determinants of state fragility in sub-Saharan Africa. Controlling for a wide range of economic, demographic, geographic and istitutional regressors, we find that institutions, and in particular the civil liberties index and the number of revolutions, are the main determinants of...

Economic reasons along with cultural affinities and the existence of networks have been the main determinants explaining migration flows between home and host countries. This paper reconsiders these approaches combined with the gravity model and empirically tests the hypothesis that ex-colonial...