Market concentration and the relative demand for college‐educated labour
利用瑞典1997-2016年雇主-雇员数据，发现大企业雇佣更多大学教育劳动力，市场集中度提高会通过劳动力在企业间重新分配，提升技能溢价和技能劳动力相对就业，从而加剧收入不平等。
Abstract If large firms employ relatively more educated workers, will an increase in market concentration increase income inequality by raising the relative demand for skill? I use Swedish employer–employee data from 1997–2016 and find a strong correlation between firm size and the share of college‐educated (‘skilled’) workers. An increase in a sector's market concentration is correlated with a higher skilled wage premium and higher relative employment of skilled workers. This is due mainly to the reallocation of workers across firms. I demonstrate how these findings can be explained by a model of heterogeneous firms where productivity and skill intensity are positively correlated.