世界银行：公共工程项目是否具有持续影响？LMIC实验研究综述（英文版）

Many low- and middle-income countries (LMICs) have introduced public works programs that offer temporary cash-for-work opportunities to poor individuals. This paper reviews experimental evidence on the impacts of public works programs on participants over the short and medium run, providing new insights on whether they have sustained impacts. The findings show that public works mainly increase employment and earnings during the program. Short-term positive effects tend to fade in the medium run,