The firm-level approach to intra-industry trade reveals that the variation in the number of exporters or exported varieties (extensive margin) accounts for a greater share of the changes in aggregate trade than the variation in the average exports per firm variety (intensive margin). This paper...

The complex nature of ‘international outsourcing’ makes it difficult to quantify its employment and broader impacts on national economies. Indeed, available evidence on the extent of ‘offshoring’ by US firms is scant, rendering analyses of its economic impacts as...