Do Government Purchases Affect Unemployment?
研究了20个OECD国家1980-2007年数据，发现政府购买增加GDP的1%可使当年失业率降低约0.3个百分点，且效果在就业制度不灵活、固定汇率制或经济下行时更大更持久。
Abstract We estimate the effect of government purchases on unemployment in 20 OECD countries, for the period 1980–2007. An increase in government purchases, equal to 1 percent of GDP, is found to reduce unemployment by about 0.3 percentage points in the same year. The effect is greater and more persistent under less “employment‐friendly” labour‐market institutions, and it is greater and more persistent under a fixed exchange rate regime than under a floating regime. The effect is also greater in downturns than in booms. The effect on unemployment reflects a corresponding positive effect of increased government purchases on the employment‐to‐population rate.