Unionized Construction Workers are More Productive
研究工会对建筑业生产率的影响，发现工会工人人均增加值比非工会高44%-52%，考虑地区价格差异后仍高17%-22%，其中职业构成和学徒培训解释了15%-27%的差异。
This paper presents evidence on the effect of unionism on productivity in construction. The linkages are distinct from those studied previously in industrial settings. Apprenticeship training and hiring halls probably raise union productivity, while jurisdictional disputes and restrictive work rules lower it. Using Brown and Medoff's methodology, union productivity, measured by value added per employee, is 44 to 52 percent higher than nonunion. The estimate declines to 17 to 22 percent when estimates of interarea construction price differences are used to deflate value added. Occupational mix differences and, possibly, apprenticeship training account for 15 to 27 percent of this difference.