The objective of this Paper is to apply different welfare approaches to the canonical model developed by Krugman, with the aim of comparing the only two possible market outcomes, i.e. agglomeration and dispersion. More precisely, we use the potential Pareto improvement criteria, as well as the...

This Paper focuses on two distinct facets of globalization: the decrease in the trade costs of goods and the decline of communication costs between headquarters and production facilities within firms. When the unskilled have about the same wage in the two regions, the decrease of these costs...

We present a new way of modelling local labour markets by linking the space of workers' skills and the physical space of cities. The key lesson of our analysis is that firms exploit workers in these two spaces by setting wages that are below the competitive level. The degree of monopsony power...

This paper tackles the issue of the optimality of agglomeration in a two-region economy with skilled/mobile and unskilled/immobile workers. The market leads to the optimal outcome when transport costs are high or low. However, for intermediate values, it yields agglomeration whereas dispersion...

Regions can benefit by offering infrastructure services that are differentiated by quality, thus segmenting the market for industrial location. Regions that compete on infrastructure quality have an incentive to increase the degree of differentiation between them. This places an upper bound on...

We show that space matters in designing the optimal provision of local public goods (LPGs). Geography imposes particular institutional structure of local governments due to the overlapping of market areas associated with different LPGs. The optimum can be decentralized through local governments...

We consider a market in which a public firm competes against private firms, and ask what happens when the public firm is privatized. In the short run, privatization is harmful because all prices rise; the disciplinary role of the public firm is lost. In the long run, privatization leads to...

Recent empirical contributions in labor economics suggest that individual firms face upward sloping labor supplies. We rationalize this by assuming that idiosyncratic non-pecuniary conditions interact with money wages in workers’ decisions to work for specific firms. Likewise, firms supply...

We study how the level of trade costs and the intensity of competition can explain the existence of two-way, one-way or no trade within the same industry. As trade costs decrease from very high to very low values, the economy moves from autarky to a regime of two-way trade, through a regime of...

There is a large consensus among international institutions and national governments to favor urban-containment policies - the compact city - as a way to improve the ecological performance of the urban system. This approach overlooks a fundamental fact: what matters for the ecological outcome of...