Unemployment as excess supply of labor: Implications for wage and price inflation

The introduction of both market-clearing wages and nominal rigidities on wage setting can be used to rationalize unemployment as excess supply of labor in the New Keynesian model. As a result, wage inflation dynamics are forward-looking and depend negatively on the rate of unemployment. Moreover, both price inflation and wage inflation evolve as indicated by equations equivalent to those obtained in Erceg et al. (2000), though with different slope coefficients. In an equal-volatility comparison, the model with unemployment conveys less price stickiness and more wage stickiness.     

The great increase in relative wage volatility in the United States

Over the past 25 years, real average hourly wages in the United States have become substantially more volatile relative to output. Microdata from the Current Population Survey (CPS) is used to show that this increase in relative volatility is predominantly due to increases in the relative volatility of hourly wages across different groups of workers. Compositional changes of the workforce, by contrast, account for only a small fraction of the increase in relative wage volatility. Simulations with a Dynamic Stochastic General Equilibrium (DSGE) model illustrate that the observed increase in relative wage volatility is unlikely to come from changes outside of the labor market (e.g. smaller exogenous shocks or more aggressive monetary policy). By contrast, greater flexibility in wage setting due to deunionization and a shift towards performance-pay contracts as experienced by the U.S. labor market is capable of accounting for a substantial fraction of the observed increase in relative wage volatility. Greater wage flexibility also decreases the magnitude of business cycle fluctuations, suggesting an interesting new explanation for the Great Moderation.     

进口与企业员工收入——以中国制造业企业为例

进口企业的职工工资直接关系到企业员工的民生福祉和劳动力市场的就业稳定性。本文基于中国制造业微观企业数据,就进口贸易对企业职工收入的影响进行深入考察,结果表明:(1)进口有利于提高企业职工的平均工资水平,不过这种正向的“工资提升”效应在长期不具有持续性。(2)中介效应检验表明,进口通过竞争效应和激励效应作用于企业的工资水平。进一步使用倍差法、工具变量法等的估计结果也证实了上述结论的稳健性。(3)进口对企业工资水平的影响因企业所有制、是否出口、进口产品类型以及进口来源国的不同而具有显著的异质性。(4)引入劳动收入份额的分析表明,进口显著降低了企业的劳动收入份额。具体地,进口的“生产率提升效应”影响超过了“工资提升效应”影响。     

进口与企业员工收入——以中国制造业企业为例

进口企业的职工工资直接关系到企业员工的民生福祉和劳动力市场的就业稳定性。本文基于中国制造业微观企业数据,就进口贸易对企业职工收入的影响进行深入考察,结果表明:(1)进口有利于提高企业职工的平均工资水平,不过这种正向的“工资提升”效应在长期不具有持续性。(2)中介效应检验表明,进口通过竞争效应和激励效应作用于企业的工资水平。进一步使用倍差法、工具变量法等的估计结果也证实了上述结论的稳健性。(3)进口对企业工资水平的影响因企业所有制、是否出口、进口产品类型以及进口来源国的不同而具有显著的异质性。(4)引入劳动收入份额的分析表明,进口显著降低了企业的劳动收入份额。具体地,进口的“生产率提升效应”影响超过了“工资提升效应”影响。     

Taxes and stabilization in contemporary macroeconomic models

The role of proportional and procyclic labor income taxes for automatic stabilization with stochastic productivity is analyzed in a contemporary macroeconomic model based on imperfect competition. The importance of short-run nominal wage rigidity for the effectiveness of progressive taxes on labor income for stabilizing output and raising household welfare is examined in a model that yields complete analytical solutions with stochastic output shocks. Increasing the procyclicity of labor income tax rates raises welfare with and without rigid nominal wages in the model economy. With fully flexible prices and wages, a positive covariance between the distortionary tax rate and productivity reduces the volatility of production and employment. This effect disappears under nominal wage rigidity, although progressive taxation can still raise welfare by reducing the distortion caused by a proportional labor tax. With rigid nominal wages and flexible consumer goods prices, payroll taxes levied at rates that rise with output can serve as automatic stabilizers. JEL Code E62 · H20     

The Role of Real Wage Rigidity and Labor Market Frictions for Inflation Persistence

We analyze the transmission mechanism of wages to inflation within a New Keynesian business cycle model with wage rigidities and labor market frictions. Our main focus is on the channel of real wage rigidities on inflation persistence for which we find the specification of the wage bargaining process to be of crucial importance. Under the standard efficient Nash bargaining, the feedback of wage rigidities on inflation is ambiguous and depends on other labor market variables. However, under the alternative right‐to‐manage bargaining we find that more rigid wages translate directly into more persistent movements of aggregate inflation.     

Long-term contracts,expectations and wage inertia

This paper develops a macro model of contractual wage setting that is used to test the importance that increased contract length has in generating wage inertia. Using an errors-in-variables format to isolate the effect of price and productivity shocks, it is shown that the sensitivity of union wages to unanticipated disturbances would increase by only a small amount in the absence of long-term, three-year, labor contracts. Our results suggest that formal contracts are not a major source of nominal wage rigidity and the price surprises play a relatively small role in generating business cycles.     

Labor Selection,Turnover Costs,and Optimal Monetary Policy

We study optimal monetary policy and welfare properties of a dynamic stochastic general equilibrium (DSGE) model with a labor selection process, labor turnover costs, and Nash bargained wages. We show that our model implies inefficiencies that cannot be offset in a standard wage bargaining regime. We also show that the inefficiencies rise with the magnitude of firing costs. As a result, in the optimal Ramsey plan, the optimal inflation volatility deviates from zero and is an increasing function of firing costs.     

Portfolio theory,job choice and the equilibrium structure of expected wages

This paper presents some of the implications of modern portfolio theory for the equilibrium structure of wages under conditions of uncertainty. The primary model presented is a model of wage uncertainty and hence the equilibrium structure is derived in terms of expected wages. The equilibrium structure with the assumption of a perfect labor market (e.g., labor units are infinitely divisible and costlessly mobile) and a perfect capital market is shown to have a very simple linear form. The model assumes homogeneous labor units as well as the usual single-period capital asset pricing model assumptions.     

Terms of Trade, Tariffs, and Labor Market Adjustment in Developing Countries

A three-goods model (importables, exportables, and nontradables)is used to analyze labor market adjustment to changes in theterms of trade and import tariffs for a small, open economy.First, a three-goods, four-factor model (labor, and capitalspecific to each sector) is developed and used to investigatehow an exogenously generated change in a country's terms oftrade affects labor allocation and wages in the short run. Next,a more traditional three-goods, two-factor model is used toexamine the effects in the long run. The analysis is carriedout under alternative assumptions regarding wage flexibility:full flexibility, economy-wide real wage rigidity, and sector-specificreal wage rigidity.     

How much inflation is necessary to grease the wheels?

Tobin's proposition that inflation “greases” the wheels of the labor market is studied using a simple dynamic stochastic general equilibrium model with asymmetric wage adjustment costs. The simulated method of moments is used to estimate the nonlinear model based on its second-order approximation. Optimal inflation is determined by a benevolent government that maximizes the households’ welfare. Econometric results indicate that nominal wages are downwardly rigid and that the optimal level of grease inflation for the U.S. economy is about 0.35% per year, with a 95% confidence interval ranging from 0.04% to 0.87%.     

Politico-economic consequences of rising wage inequality

This paper uses a dynamic political economy model to evaluate whether the observed rise in wage inequality and decrease in median to mean wages can explain some portion of the relative increase in transfers to low earnings quintiles and relative increase in effective tax rates for high earnings quintiles in the U.S. over the past several decades. Specifically, we assume that households have uninsurable idiosyncratic labor efficiency shocks and consider policy choices by a median voter which are required to be consistent with a sequential equilibrium. We choose the transition matrix to match observed mobility in wages between 1978 and 1979 in the panel study of income dynamics (PSID) data set and then evaluate the response of social insurance policies to a new transition matrix that matches the observed mobility in wages between 1995 and 1996 and is consistent with the rise in wage inequality and the decrease in median to mean wages between 1979 and 1996. We deal with the problem that policy outcomes affect the evolution of the wealth distribution (and hence prices) by approximating the distribution by a small set of moments. We contrast these numbers with those from a sequential utilitarian mechanism, as well as mechanisms with commitment.     

Optimal Monetary Policy with Labor Market Frictions: The Role of the Wage Channel

This paper introduces right‐to‐manage bargaining into a labor search model with sticky prices instead of standard efficient bargaining and examines the Ramsey‐optimal monetary policy. Without real wage rigidity, even when the steady state is inefficient, price stability is nearly optimal in response to technology or government shocks. Right‐to‐manage bargaining creates the wage channel to inflation, because there is a direct relationship between real wages and real marginal cost. In the presence of the wage channel, price markups consist of only real marginal cost, and real wages and hours per worker are determined such as in the Walrasian labor market.     

Downward wage rigidity and business cycle asymmetries

The growth rates of wages, unemployment and output of a number of OECD countries have a strongly skewed distribution. In this paper we analyze to what extent downward wage rigidities can explain these empirical business cycle asymmetries. To this aim, we introduce asymmetric wage adjustment costs in a New-Keynesian DSGE model with search and matching frictions in the labor market. Increasing wages is less costly than cutting them. It follows that wages increase relatively fast and thus limit vacancy posting and employment creation, but they decline more slowly, leading to a strong reduction in vacancies and employment. The presence of downward wage rigidities strongly improves the fit of the model to the observed skewness of labor market variables and the relative length of expansions and contractions in the output and the employment cycles. The asymmetry also explains the differing transmission of positive and negative monetary policy shocks from wages to inflation.     

Output and employment in a macro model with discrete transaction costs

The paper develops a macro model for determining output and employment when discrete transaction costs exist for paying wages and for purchasing commodities. Household labor supply is a function of an effective real wage, which modifies the apparent real wage to take account of the length of the payment period and the costs associated with buying and holding commodities. Firm labor demand is derived in a model where there are lumpy payroll costs associated with making wage payments. The behavior of households and firms is brought together in a market-clearing framework to determine the values of the real wage, employment and output, as well as the time intervals between wage payments and purchases of commodities. The effects of changes in the transaction and holding cost parameters are then examined by comparative-static techniques. An increase in any of these cost parameters turns out to reduce output and the amount of labor employed in production, but also tends to raise the amount of labor absorbed by the process of transacting. The tendency of transaction labor to move in the opposite direction from production labor implies that the net effects on total work are ambiguous.     

Comparing New Keynesian models of the business cycle: A Bayesian approach

The baseline New Keynesian model cannot replicate the observed persistence in inflation, output, and real wages for sensible parameter values. As a result, several extensions have been suggested to improve its fit to the data. We use a Bayesian approach to estimate and compare the baseline sticky price model of Calvo's [1983. Staggered prices in a utility maximizing framework. Journal of Monetary Economics 12, 383-398.] and three extensions. Our empirical results are as follows. First, we find that adding price indexation improves the fit of Calvo's [1983. Staggered prices in a utility maximizing framework. Journal of Monetary Economics 12, 383-398.] model. Second, models with both staggered price and wage setting dominate models with only price rigidities. Third, introducing wage indexation does not significantly improve the fit. Fourth, all model estimates suggest a high degree of price stickiness. Fifth, the estimates of labor supply elasticity are higher in models with both staggered price and wage contracts. Finally, the estimated inflation parameters of the Taylor rule are stable across models.     

Making a difference

Despite the potential for free‐riding, workers motivated by “making a difference” to the mission or output of an establishment may donate labor to it. When the establishment uses performance‐related compensation (PRC), these labor donations closely resemble a standard private provision of public goods problem, and are not rational in large labor pools. Without PRC, however, the problem differs significantly from a standard private provision of public goods situation. Specifically, in equilibrium, there need not be free‐riding, decisions are non‐monotonic in valuations, and contribution incentives are significant even in large populations. When PRC is not used, the establishment tends to favor setting low wages, which helps to select a labor force driven by concern for the firm's output. Expected output can actually fall with the wage in this situation. When wages are optimally set, the introduction of PRC, even if perfect and costless, may lower expected output and firm profits in comparison to the non‐PRC outcome.     

职工薪酬与会计稳健性——基于中国上市公司的经验证据

企业职工对未来可持续的高工资和管理层对未来低劳动力成本的不同期望,可能导致两者对会计稳健性需求的差异。本文以Khan et al.(2009)的C Score为会计稳健性的计量方式,分析了职工薪酬、工资刚性与会计稳健性的关系。结果显示:较高的职工薪酬与较强的会计稳健性相联系;工资的向下刚性特征与较强的会计稳健性相联系;作为工会规模代理变量的职工人数也与会计稳健性显著正相关。此外2008年实行《新劳动合同法》之后,企业的会计稳健性有了显著提高,这也可能侧面体现了职工与会计稳健性的关系。本文的研究意义在于联结了传统的职工薪酬研究和会计稳健性研究,对Watts(2003)提出的与会计稳健性相关的契约集合进行了扩展,显示了职工薪酬契约对会计稳健性的影响。     

异质性劳动力供给、工资粘性与中国经济周期

通过同时引入异质性劳动力供给和工资粘性拓展了包含五类外生冲击的新凯恩斯DSGE模型,在此框架下考察异质性劳动力供给和工资粘性对经济周期的作用及传导机制,并分析两者传播和放大外生冲击作用的异同,研究发现：同时包含异质性劳动力供给和工资粘性的一般均衡模型要明显优于非异质性劳动力供给和无工资粘性模型;异质性劳动力供给和工资粘性均在一定程度上放大了外生冲击对经济波动的影响,在不包含两者的情形下,投资冲击的贡献度变小,技术冲击和政府支出冲击的贡献度变大。     

Unemployment and the business cycle

This paper presents a dynamic general equilibrium model where labor effort is imperfectly observable and there is unemployment in equilibrium. In contrast to shirking models in the efficiency wage literature, detected shirkers are not dismissed. Instead, they face a monetary punishment because they forgo an increase in their compensation. Estimated versions of the model can generate the high variation in employment and low variation of real wages observed over the business cycle, and are consistent with existing qualitative evidence about the responses of the economy to fiscal policy shocks.