enhancing the assignment of workers to jobs in the face of firm productivity heterogeneity and skill-biased technological change …. It shows that in order to do so policy needs to be a function of the properties of the firm’s productivity distribution … emerging from the analysis is that the degree of firm productivity heterogeneity, in terms of skewness and variance, matters …

Reduced- form tests of scale effects in markets with search, run when aggregate matching functions are estimated, may …

Reduced-form tests of scale effects in markets with search, based on aggregate matching functions, may miss important … higher post-unemployment wages but not faster matches, so aggregate matching functions are unaffected by scale. …

matching hypothesis, which we show not to be driven by co-location of good workers and firms. Finally, we point out that … assortative matching is negatively related to local market size. …

Assortative Matching between workers and firms provides evidence of the complementarities or substitutes in production … Assortative Matching is positive or negative. Even though we cannot identify the sign of the sorting, we can identify the strength …

underlying theory is the search and matching model, with workers and firms engaging in costly search leading to random matching … from it, generated by matching. …

-city matching in particular. I reject the alternative hypothesis that mobility differences are driven by variation in the moving …