农民工的自雇佣选择及其收入

Rural Migrants' Self-employment Decisions and Their Earnings

文章基于2010年北京农民工调查数据,使用Roy模型研究了农民工自雇佣选择及其收入的影响因素。研究发现:能力更强、社会资本更多的农民工具有更高的自雇佣概率;物质资本是影响自雇佣的一个关键因素;自雇佣者在自雇佣部门具有比较优势,与工资收入者相比,自雇佣者有更高的收入,收入差异主要来自于能力等不可观测的因素。研究结论在一定程度上说明农民工的就业环境已经有所改善,自雇佣不再是农民工的一种被迫选择。

Using the data of rural migrants in Beijing in 2010, this paper employs the Roy model to investigate the determinants of rural migrants＇ self-employment decisions and their earnings. It reaches three main find- ings： firstly, rural migrants with better ability and more social capital have a higher probability of self-employment; secondly, physical capital is a key factor influencing self-employment decisions; thirdly, self-employed migrants have a comparative advantage in self-employment sectors, and self-employed workers also have higher earnings than wage-earners; earnings differences are mainly caused by unobserved heterogeneity such as ability. To some extent, this study offers an explanation that the employment environment of rural migrants has improved, and self-employment might be no longer a forced choice of rural migrants.