中国社会科学院研究生院学报
中國社會科學院研究生院學報
중국사회과학원연구생원학보
Academic Journal Graduate School Chinese Academy of Social Sciences
2014年
4期
54~64
,共null页
劳动合同 工资收入 边际回报 影响机制
勞動閤同 工資收入 邊際迴報 影響機製
노동합동 공자수입 변제회보 영향궤제
labor contract; heterogeneous marginal return; endogenous switching model;selection bias
是否签订劳动合同,不仅是法律意识问题,也是经济决策问题。现有研究往往忽略工资决定中的不可观测因素和选择性偏误,导致错误估计工资方程以及劳动合同的异质性边际回报,也无法深入探讨劳动合同对工资收入的影响途径。本文利用修正选择性偏误的内生转换回归模型,同时估计农民工的工资方程和劳动合同的选择方程。研究发现,仅在签订劳动合同组,教育水平、技能和法律意识才能提高农民工工资收入,劳动合同能够降低性别歧视;年轻、城市户籍、有技能证书和法律知识的农民工更倾向于选择签订劳动合同。签订劳动合同的边际回报存在很强的异质性,它是一条向下倾斜的曲线,最大为0.152,最小为-0.072。平均来看,农民工签订劳动合同能够增加3.78%的工资收入。
是否籤訂勞動閤同,不僅是法律意識問題,也是經濟決策問題。現有研究往往忽略工資決定中的不可觀測因素和選擇性偏誤,導緻錯誤估計工資方程以及勞動閤同的異質性邊際迴報,也無法深入探討勞動閤同對工資收入的影響途徑。本文利用脩正選擇性偏誤的內生轉換迴歸模型,同時估計農民工的工資方程和勞動閤同的選擇方程。研究髮現,僅在籤訂勞動閤同組,教育水平、技能和法律意識纔能提高農民工工資收入,勞動閤同能夠降低性彆歧視;年輕、城市戶籍、有技能證書和法律知識的農民工更傾嚮于選擇籤訂勞動閤同。籤訂勞動閤同的邊際迴報存在很彊的異質性,它是一條嚮下傾斜的麯線,最大為0.152,最小為-0.072。平均來看,農民工籤訂勞動閤同能夠增加3.78%的工資收入。
시부첨정노동합동,불부시법률의식문제,야시경제결책문제。현유연구왕왕홀략공자결정중적불가관측인소화선택성편오,도치착오고계공자방정이급노동합동적이질성변제회보,야무법심입탐토노동합동대공자수입적영향도경。본문이용수정선택성편오적내생전환회귀모형,동시고계농민공적공자방정화노동합동적선택방정。연구발현,부재첨정노동합동조,교육수평、기능화법률의식재능제고농민공공자수입,노동합동능구강저성별기시;년경、성시호적、유기능증서화법률지식적농민공경경향우선택첨정노동합동。첨정노동합동적변제회보존재흔강적이질성,타시일조향하경사적곡선,최대위0.152,최소위-0.072。평균래간,농민공첨정노동합동능구증가3.78%적공자수입。
Taking the heterogeneous marginal returns into account, this article applies endogenous switching regression model to correct selection bias and looks into the mechanism of which labor contract affects the migrants' wage. We find that signing labor contracts does not necessarily increase migrants' wage income. Only those who signed labor contracts will benefit from education, labor skills and law knowledge. What's more, labor contract is helpful to eliminate sex discrimination, and it is a cost-benefit analysis process to sign contract. The migrants of young, with urban register, training certificates and law knowledge are more likely to sign labor contracts. Besides, substantial heterogeneity is found among individual marginal returns of labor contracts signing. The marginal returns vary and the curve of MTE is downward sloping. In average, signing labor contract can bring 3. 78% in crease in income.