Immigrants may complement native workers, increase productivity, allow specialization by skill in the firm and lower … costs. These effects could be beneficial for the firm and increase its productivity and profits. However not all firms use … supply of immigrants on firms' immigrant employment and firm's productivity. Using micro-level data on French firms, we show …

transitions, and this allows for estimation of the degree of search frictions. The firm data are informative on labor productivity … difference between labor productivity and wages in a market depends on the degree of frictions and other determinants. We correct …

reservation wages, shifting the labor force towards the more productive firms. The relation between productivity dispersion and UI … policy is mediated by the wage posting policies of firms that take both productivity and policy into account. Optimal UI … policy is shown to crucially depend on the properties of the firm productivity distribution, such as its variance and …