技术革新、产业层级分工与工资差异

本文在一般均衡的框架中,运用匹配与分类的思想,综合考虑了技术变革所引起的沟通成本的降低和技术进步对劳动力技能产生的“技能贬值”效应,将技术进步、产业组织结构变化与工资差距三者相结合建立模型。该模型能够将产业组织架构内生化,对不同能力的员工进行生产职能分配,并能给出技术变革与工资水平差距的内在联系;同时,本文利用珠三角的经济发展事实对以上模型结论提供了经验证据。     

A Schumpeterian model of equilibrium unemployment and labor turnover

This paper constructs a general equilibrium model of equilibrium unemployment by combining an endogenous growth model with a variant of equilibrium search theory. The analysis offers two explanations for the causes of widening wage gap between skilled and less-skilled labor, and rising unemployment rate among the less skilled: technological change in the form of an increase in the size of innovations or skilled labor saving technological change in R&D activity. In addition, the model identifies two distinct effects of faster technological progress on the aggregate unemployment rate. First, it increases the rate of labor turnover and therefore increases the aggregate unemployment rate – the creative destruction effect. Second, it creates R&D jobs, which offer workers complete job security, and consequently reduces the aggregate unemployment rate – the resource reallocation effect.     

Wage inequality and between-firm wage dispersion in the 1990s: A comparison of rural and urban enterprises in China

Using a worker–firm matched sample, this paper compares the changes of wage structures of urban and rural enterprises following public sector restructuring in China's manufacturing sector. While the wage responses of rural firms with respect to firm characteristics are found to have declined steadily, compensation of urban workers has become increasingly linked to their firms' ability to pay. Our analysis reveals that industrial restructuring has weakened the influence of institutional factors, such as market power, soft budget constraints, and insider influence, on the wage determination of rural firms but it has enhanced their impact on urban firms. Journal of Comparative Economics 33 (4) (2005) 664–687.     

"交保证金"的报酬政策在中国存在的原因解析--一种扩展的夏皮罗-斯蒂格利茨模型

本文通过建立一种扩展的夏皮罗—斯蒂格利茨模型，解释了“交保证金”的报酬政策在中国存在的原因。当劳动力处于买方市场时，工人在失业和就业两者之间严格偏好于就业，厂商有可能采取“交保证金”的报酬政策，那么，厂商就可以支付较低的实际工资，获得较好的监督效果，使工人努力工作。厂商以较低的工资雇佣工人，可以使劳动力市场的就业人数有所增加，但由于并不是所有工人都能够通过“交保证金”而实现就业，故这一报酬政策不能使市场出清。     

Labor supply in urban China

Using labor supply responses from 10,560 urban Chinese workers, two-stage least squares estimations identify positive compensated wage effects and negative income effects that are, for the most part, statistically significant. The gross wage effects are mostly positive but they indicate relatively low uncompensated labor supply elasticities. The compensated wage effects are much larger; these may be important in assessing the labor market consequences of reform policies that monetize non-pecuniary benefits. The significance of labor supply responses depends on individual responsibilities within the family; the effects are largest for women and non-household heads. Journal of Comparative Economics 31 (4) (2003) 795–817.     

Do reductions in tick sizes influence liquidity?

On 4 December 1995, the Australian Stock Exchange reduced the minimum tick size for stocks priced below $A0.50 and stocks priced above $A10. We use this natural experiment to examine the impact of tick size reductions on liquidity. The present paper reports that although lower tick sizes generally lead to increased liquidity, this result is not universal. Stocks with larger relative tick sizes experience the greatest improvement in liquidity, while stocks with small relative tick sizes and low trading volume experience reduced liquidity. There is no change in order exposure as a result of the reduced tick sizes.     

Wage expectations in northern and southern Italian regions: An interpretation based on psychological and social factors

Individual wage expectations of Italian unemployed are studied. The analysis is carried out separately for the North‐Central and southern Italian regions using semiparametric additive models. Results show a marked difference in expectations formation across regions. We argue that as far as the labour market information in the South is less diffuse and more ambiguous than in the North, the divergence between the econometric model based on a utility‐maximisation mainstream theory and the actual wage expectation mechanism may be large. A tentative explanation based on psychological and social factors is offered.     

Changes in the Finnish Wage Structure: Will Demand and Supply Do?

This study addresses changes in the wage structure in Finland between 1977 and 1995, and provides a simple explanation based on the demand for and supply of skills. The single index model of Card and Lemieux (1996) is augmented by incorporating changes in the supply of skills. The augmented model adequately accounts for the changes in relative wages between groups of different education and experience, but does not capture the changes in the within-group distribution.
JEL classification : J 31     

Gender wage gap studies: consistency and decomposition

This paper reviews the empirical literature on the gender wage gap, with particular attention given to the identification of the key parameters in human capital wage regression models. This is of great importance in the literature for two main reasons. First, the main explanatory variables in the wage model, i.e., measures of work experience and time-out-of-work, are endogenous. As a result, applying traditional estimators may lead to inconsistent parameter estimates. Second, empirical evidence on the gender wage gap hinges on estimates of the parameters of interest. Accordingly, their economic meaning may be limited by restrictive assumptions included in wage models. This challenges both researchers and policymakers who require precise measures of the gender wage gap in order to create and enforce efficient equality policies. This paper is a substantially revised version of the first chapter of my thesis. I am grateful to Christian Dustmann and Wendy Carlin for their great support and comments. I also thank Bernd Fitzenberger, colleagues at the Norwegian School of Economics and Business Administration and IZA, and three anonymous referees for their helpful comments and suggestions.     

企业高管与一般雇员工资差距对企业绩效的影响——基于对A股上市公司的实证分析

本文以我国A股上市公司为例,实证检验了企业内部工资分配差距与企业绩效之间的关系。研究结果表明,二者之间具有显著的正向关系——较大的工资差距有利于提高企业绩效,该结果支持了竞赛理论。本文的研究结果具有明确的政策含义:放松对国有企业的工资管制有利于改善企业绩效。