Local employment multipliers for large publicly subsidized firms: Evidence from a synthetic control approach

This paper provides estimates of local employment multipliers from large, publicly subsidized firms. We use a synthetic control weighted difference-in-difference estimation procedure that matches treated areas with comparison areas to generate local employment multiplier estimates. We show that local employment multiplier estimates have a high degree of uncertainty, with a wide range of point estimates (both positive and negative) and varying degrees of statistical significance. There is a concentration of positive employment multipliers from manufacturing facilities, but little correlation between estimated multipliers and subsidy value. We demonstrate that our approach produces drastically different results than a traditional difference-in-difference approach.