Spillovers from High-Skill Consumption to Low-Skill Labor Markets
利用美国人口普查数据，发现自1980年以来低技能工人越来越多地从事非贸易的时间密集型服务，如餐饮和清洁，且该部门工资差距缩小。研究认为高技能工人因时间成本高而增加此类消费，推动了低技能工人工资增长。
Census data show that since 1980 low-skill workers in the United States have been increasingly employed in the provision of non-tradeable time-intensive services – such as food preparation and cleaning – that can be broadly thought as substitutes of home production activities. Meanwhile the wage gap between this sector and the rest of the economy has shrunk. If skilled workers, with their high opportunity cost of time, demand more of these time-intensive services, then wage gains at the top of the wage distribution (such as those observed in the last three decades) are expected to raise the consumption of these services, consistent with these stylized facts. Using both consumption expenditure data and city-level data on employment and wages of workers of different skills, we provide several pieces of evidence in favor of these demand shifts, and we argue that they provide a viable explanation for the growth in wages at the bottom quantiles observed in the last fifteen years.