In this paper we develop a dynamic structural life-cycle model of labor supply behavior which fully accounts for the effects of income tax and transfers on labor supply incentives.  Additionally, the model recognizes the demand side driven rationing risk that might prevent individuals from...

I present a trade model featuring North-South differences in demand for quality and in quality of task supply.  The model explains a number of stylised facts: Southern firms charge higher factory-gate prices for their products in rich than in poor, and in distant than in near markets.  The...

We provide a general characterization of which firms will select alternative ways of serving a market.  If and only if firms' maximum profits are supermodular in production and market-access costs, more efficient firms will select into the activity with lower market-access costs.  Our result...

We introduce two new tools for relating preferences and demand to firm behavior and economic performance.  The "Demand Manifold" links the elasticity and convexity of an arbitrary demand function; the "Utility Manifold" links the elasticity and concavity of an arbitrary utility function. ...

This paper discusses the place of oligopoly in international trade theory, and argues that it is unsatisfactory to ignore firms altogether, as in perfectly competitive models, or to view large firms as more productive clones of small ones, as in monopolistically competitive models.  Doing...

This paper analyses and quantifies the effects of trade liberalisation and skill-biased technical change, both exogenous and trade-induced, on the skill premium and real wages of unskilled and skilled workers in the Mexican manufacturing sector, using industry- and firm-level data for 1984-1990...

This paper analyses the effects of trade liberalisation and technical change on real and relative wages.  It builds a model with monopolistic competition, heterogeneous firms and two countries, North and South, and solves it numerically.  Skill-biased technical change, caused by decreases in...

The impact of imports from low-wage countries on domestic labor market outcomes has been a hotly debated issue for decades.  The recent surge in imports from China has reignited this debate.  Since the 1980s several developed economies have experienced contemporaneous increases in the volume...