Do Small Businesses Create More Jobs? New Evidence for the United States from the National Establishment Time Series
利用美国国家机构时间序列数据库，重新检验小企业是否创造更多就业，发现小机构和小企业净创造更多就业，但差异远小于早期研究结论，且制造业中关系不明确。
JEL No. J20,L25,L53 We use a new database, the National Establishment Time Series (NETS), to revisit the debate about the role of small businesses in job creation. Birch (e.g., 1987) argued that small firms are the most important source of job creation in the U.S. economy, but Davis et al. (1996a) argued that this conclusion was flawed, and based on improved methods and using data for the manufacturing sector they concluded that there was no relationship between establishment size and net job creation. Using the NETS data, we examine evidence for the overall economy, as well as for different sectors. The results indicate that small establishments and small firms create more jobs, on net, although the difference is much smaller than what is suggested by Birch's methods. However, the negative relationship between establishment size and job creation is much less clear for the manufacturing sector, which may explain some of the