Public Infrastructure and Wages: Public Capital's Role as a Productive Input and Household Amenity
研究公共资本对工资的影响，发现高速公路作为家庭便利设施的作用强于提高生产率，但在制造业中生产率效应更显著。
Production function studies typically conclude that public capital plays little role in enhancing productivity. However, others have found that infrastructure and employment growth are positively related. These apparently conflicting results can be reconciled if public capital serves as a household amenity that increases labor supply without dramatically increasing productivity. This study examines the impact of public capital on wages in order to assess whether productivity or amenity effects dominate. For the economy as a whole, the results suggest that highway's strongest role is as a household amenity, however, for the manufacturing sector, the productivity effect of highways appears to dominate.