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国内外包的替代效应

The Displacement Effects of Domestic Outsourcing
NBER Working Papers · 2026 · Mayara Felix、Michael B. Wong

中文摘要

关于国内外包降低薪酬的证据主要来自现场转移,即工人转入承包商但保留相同工作,工作场所不变。工人被替代的情况则鲜少得到观察:他们是否失业、流向何处,以及收入如何变化。在巴西1993—1994年支持外包的改革中,该改革对保安人员产生了差异化影响,此类转移并不常见;企业转而采用职业性裁员,解雇保安而保留其他工人。被替代保安的就业在五年内恢复,但许多人更换了职业,工资仍低约12%。终身损失平均相当于裁员前1.2至1.5年的收入,且集中在来自高工资企业的工人中,反映了工资溢价的丧失。

Abstract

Evidence that domestic outsourcing lowers pay comes largely from on-site transfers, in which workers move to a contractor but keep the same jobs. Displacement is rarely observed: whether workers lose their jobs, where they go, how earnings evolve. In Brazil’s 1993–1994 pro-outsourcing reforms, which differentially affected security guards, such transfers were rare; firms instead used occupational layoffs, shedding their guards while keeping other workers. Displaced guards’ employment recovered within five years, but many changed occupations and wages stayed about 12% lower. Lifetime losses average 1.2 to 1.5 years of pre-layoff earnings, concentrated among workers from high-wage firms, reflecting lost premia.
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