The world is replete with spatial frictions. Shipping goods across cities entails trade frictions. Commuting within cities causes urban frictions. How important are these frictions in shaping the spatial economy? We develop and quantify a novel framework to address this question at three...

This paper offers a new mechanism to explain de-industrialisation in response to a price increase of the manufactured good. In our trade model, one sector (agriculture) is perfectly competitive while the other (manufacturing) is monopolistically competitive. Both industries use skilled and...

We analyze the first data set on consistently defined functional urban areas in Europe and compare the European to the US urban system. City sizes in Europe do not follow a power law: the largest cities are "too small" to follow Zipf's law.

We analyze the first data set on consistently defined functional urban areas in Europe and compare the European to the US urban system. City sizes in Europe do not follow a power law: the largest cities are “too small” to follow Zipf’s law.

Headquarters and their specialized component suppliers have a vital interest in establishing long-term collaborations. When formal contracts are not enforceable, such efficiency-enhancing cooperations can be established via informal agreements, but relational contracts have been largely ignored...

Regional differences in unemployment rates in the EU, both within and across member countries, are far more pronounced than regional income disparities. Yet, standard models of the new trade and location theories (new economic geography, new trade theory etc.) usually assume full employment and...

This paper studies the social desirability of agglomeration and the efficiency arguments for regional policy in a simple, analytically solvable ‘new economic geography’ model with two trade integrating regions. The location pattern emerging as market equilibrium is ?-shaped, featuring...

We address the effects of wages on employment growth on the basis of a theoretical model from which cost and demand effects can be derived. In the empirical analysis we take a highly disaggregated perspective and apply a newly developed shift-share regression technique on an exhaustive and very...

In times of high and persistent unemployment, it has become one of the most important policy tasks in many developed countries to trigger a process of sustained employment growth. An illustrative example is the policy of regional "growth-poles”, which assumes that a local concentration of a...

In this paper I analyze the impact of initial human capital on subsequent city employment growth for the case of West Germany (1977-2002). I find robust evidence that skilled local areas have grown stronger than unskilled ones. But this observed positive relation need not indicate a localized...