Letting Luck Decide: Government Procurement and the Growth of Small Firms
利用厄瓜多尔政府采购的随机分配机制，发现需求冲击显著促进小企业当年增长，但效果是暂时的，且无溢出效应。
I estimate the causal effects of demand shocks, stemming from government procurement, on the growth of small firms in Ecuador. I assemble a unique dataset using several new administrative sources and, as identification strategy, exploit a governmental procurement process that allocates public contracts through a randomised contest. I find a positive and significant effect of demand shocks on firm growth. On average, an increase in demand of 10 per cent will increase wage expenses and fixed assets by approximately 5 per cent during the year of the shock. I also find no evidence of spillover effects from demand shocks on sales to the public or private sector. Finally, as in other studies, I show that demand positively impacts firm growth but, contrary to other findings, this effect is temporary and only observed during the year of the shock.