Union/Nonunion Wage Gaps in the Public Sector
比较公共和私营部门内不同工人群体的工会与非工会工资差距，发现公共部门差距通常略低于私营部门，但存在重要例外，如地方政府雇员。
There is much variation in the union/nonunion wage gap across groups of workers within each of the two sectors, public and private. Furthermore, the variation in the public sector does not parallel in all of its detail that in the private sector. Thus, though the public-sector gaps typically are somewhat below their private-sector counterparts, there are important exceptions to this difference, especially among employees of local governments: public school teachers, clerical workers, refuse collectors, local transit bus drivers, licensed practical nurses, hospital technicians, nonprofessional hospital workers, and undoubtedly some others.