Procurement policy and SME participation in public purchasing
利用欧洲采购数据，研究发现更高质量的采购法规能提升中小企业参与度和中标率，而将合同分拆为小标的仅对极小金额合同有效。
Abstract This study investigates the relationship between regulatory policies governing public procurement and participation by small and medium enterprises (SMEs), using a large dataset on European procurement. We find that better quality procurement regulation is associated with greater SME participation and higher probability that SMEs win contracts. Dividing contracts into smaller lots, a key feature of 2014 EU procurement regulation reform, bolsters participation by SMEs but only increases the probability of SMEs winning contracts for small value lots (€25,000 or less). Our results suggest governments seeking to enhance participation by SMEs in public procurement without explicitly favoring SMEs can do so by improving the overall quality of procurement processes.