No Line Left Behind: Assortative Matching Inside the Firm
利用印度一家大型制造企业工人跨生产线流动的数据，发现工人与管理者之间存在负向分层匹配，即优秀工人往往与较差管理者配对，而正向匹配本可提升生产率达4%。
Abstract We leverage the high degree of worker mobility across production lines in a large Indian manufacturer to estimate the sorting of workers to managers, using data on daily worker productivity. We find negative assortative matching (NAM): better workers tend to be matched with worse managers. Estimates of the production technology, however, reveal that productivity would increase by up to 4% under positive sorting. Exploiting a survey of managers and data on orders from multinational brands, we document that NAM arises, at least partly, because maintaining valuable relationships with buyers provides strong incentives to avoid delays on any given production line.