THE CHANGING STRUCTURE OF GOVERNMENT CONSUMPTION SPENDING
研究发现政府消费支出结构发生长期变化：政府越来越多地购买私人部门商品，减少自身生产增加值。这一变化通过降低公共部门相对生产率，改变了财政政策传导机制，影响工时、公共增加值和劳动份额对政府支出冲击的反应。
Abstract We document a secular change in the structure of government consumption spending: Over time the government purchases relatively more private‐sector goods, and relies less on its own production of value added. This process alters the transmission of fiscal policy, by dampening the response of hours, public value added, and the labor share to government spending shocks, while leaving the response of total output unchanged. We rationalize these facts in a general equilibrium model where a decline of the public‐sector relative productivity drives the changing structure of government spending, which in turn modifies the transmission mechanism of government spending shocks.