市场发育、劳动合同异质性与农民工工资的溢价效应——基于CHIP数据的实证研究

Market Development,Labor Contract Heterogeneity and the Premium Effect of Migrant Workers’ Salary——An Empirical Study Based on CHIP Data

本文利用中国家庭收入调查(CHIP)数据,构建扩展的Mincer工资方程,从农民工劳动合同异质性角度研究市场化程度、劳动合同对农民工工资的影响。结果显示,农民工签订劳动合同有利于其工资水平的提高,长期合同的工资溢价要高于短期合同。女性获得劳动合同的溢价要高于男性。在市场发育更好的地区,农民工的教育回报更高,更容易获得劳动合同。比较不同市场化程度的地区劳动合同对农民工工资的溢价发现,随着市场化程度的提高,长期劳动合同给农民工带来的工资溢价会降低。这也说明以劳动合同为代表的市场分割仍然存在,市场发育水平的提高能够缓解这种分割。

This paper uses the CHIP data to construct an extended Mincer wage equation.From the perspective of the contracts heterogeneity,this paper studies the impact of market development and labor contracts on migrant workers’wages.The results show that labor contracts are conducive to the improvement of their wages,and the wage premium of long-term contracts is higher than short-term contracts.Women’s premiums for obtaining labor contracts are higher than men.In areas where the market is better developed,migrant workers have higher educational returns and are more likely to obtain labor contracts.In comparing the premiums of labor contracts to the wages,as the degree of marketization increases,the wage premium of long-term labor contracts will decrease.This also shows that market segmentation represented by labor contracts still exists,and the improvement of market development level can alleviate this segmentation.