Working time, employment, and work sharing: Evidence from Sweden

We study three questions which are important for work sharing to increase employment. First, is there a negative long-run relation between working time and employment? Second, are hours per worker exogenous with respect to wages and employment? Third, can policy makers influence actual hours per worker? We formulate a theoretical model for employment, hours per worker, production, and real wages. A VAR model with cointegrating constraints is estimated by maximum likelihood using Swedish private sector data 1970:1–1990:4. We find (i) no long-run relation between hours per worker and employment, (ii) that hours per worker are endogenous with respect to the estimation of long-run parameters, and (iii) that legislated working time and hours per worker are related to each other in the long run. First version received: September 1997/final version accepted: June 1999     

EQUILIBRIUM SEARCH AND TAX CREDIT REFORM

An empirical equilibrium job search model with wage posting is developed to analyze the impact of U.K. tax reforms. The model allows for a rich characterization of the labor market, with hours responses, accurate representations of the tax and transfer system, and both worker and firm heterogeneity. The British Working Families' Tax Credit and contemporaneous reforms are predicted to increase employment, with equilibrium effects found to be relatively modest. The model is used to assess the impact of alternative policies, with equilibrium effects shown to become important as the generosity of tax credits is increased.     

Entry costs, industry structure, and cross-country income and TFP differences

Entry costs vary dramatically across countries. To assess their impact on cross-country differences in output and TFP, we construct a model with endogenous entry and operation decisions by firms. We calibrate the model to match the U.S. distribution of employment and firms by size. Higher entry costs lead to greater misallocation of productive factors and lower TFP and output. In the model, countries in the lowest decile of the entry costs distribution have 1.32 to 1.45 times higher TFP and 1.52 to 1.75 times higher output per worker than countries in the highest decile. As in the data, higher entry costs are associated with lower entry rates and business density.     

How migration restrictions limit agglomeration and productivity in China

China strongly restricts rural–urban migration, resulting in a well acknowledged surplus of labor in agriculture. But migration is also restricted within sectors. This paper argues that these intra-sector restrictions lead to insufficient agglomeration of economic activity in both the rural industrial and urban sectors, with resulting first order losses in GDP. For urban areas the paper estimates a city productivity relationship, based on city GDP numbers. The effects of access, educational attainment, FDI, and public infrastructure on productivity are estimated. Given these, worker productivity is shown to be an inverted U-shape function of city employment, with the peak point shifting out as industrial composition moves from manufacturing to services, as predicted by urban theory. As far as we know this is the first paper to actually estimate the relationship between output per worker and city scale for any country. The majority of Chinese cities are shown to be potentially undersized—below the lower bound on the 95% confidence interval about the size where their output per worker peaks. The paper calculates the large gains from increased agglomeration in both the rural industrial and urban sectors.     

Policy distortions and aggregate productivity with heterogeneous establishments

We formulate a version of the growth model in which production is carried out by heterogeneous establishments and calibrate it to US data. In the context of this model we argue that differences in the allocation of resources across establishments that differ in productivity may be an important factor in accounting for cross-country differences in output per capita. In particular, we show that policies which create heterogeneity in the prices faced by individual producers can lead to sizeable decreases in output and measured total factor productivity (TFP) in the range of 30 to 50 percent. We show that these effects can result from policies that do not rely on aggregate capital accumulation or aggregate relative price differences. More generally, the model can be used to generate differences in capital accumulation, relative prices, and measured TFP.     

The Great U.K. Depression: A Puzzle and Possible Resolution

The United Kingdom was depressed for 20 years between the two world wars. The decrease in output was entirely due to lower hours per worker and lower employment. Our main finding is that generous unemployment benefits, in conjunction with large negative sectoral shocks, are the most plausible candidate explanation for this depression. We also find that the conventional Keynesian monetary story for this period is unconvincing. Journal of Economic Literature Classification Numbers: E30, E24.     

Some thought experiments on the changes in labor supply in Turkey

Turkey has the lowest hours worked (the product of total employment and annual hours per worker, divided by the size of the working-age population) among the OECD countries. We study the changes in hours of work following Ohanian, Raffo, and Rogerson (Journal of Monetary Economics, 2008) and find that the intratemporal first-order condition from the neoclassical growth model accounts for the decline in total hours worked during 1998–2009 in Turkey. Hours worked increased in Turkey since 2009 and the model accounts for half of that increase between 2009 and 2011. Our findings suggest that time-varying taxes on consumption and labor play significant roles in explaining the hours worked in Turkey. The model without subsistence consumption provides a better fit with the data after 2003. The presence of government consumption in the utility function does not seem very important.     

Efficiency wages, employment, and the marginal income-tax rate: A note

In the framework of an efficiency-wage model, Hoel [Journal of Economics (1990) 51: 89–99] argues that a reduction in the marginal income-tax rate reduces employment. The present note shows that this result depends on how the tax reform is assumed to change the burden per worker. If the tax payment per worker is held constant, it cannot be ruled out that a lower marginal tax rate leads to an increase in employment.     

The Macroeconomic Consequences of Financing Health Insurance

Employer-financed health insurance systems like those used in the United States distort firms’ labor demand and adversely affect the economy. Since such costs vary with employment rather than hours worked, firms have an incentive to increase output by increasing worker hours rather than employment. Given that the returns to employment exceed the returns to hours worked, this results in lower levels of employment and output. In this paper, we construct a heterogeneous agent general equilibrium model where individuals differ with respect to their productivity and employment opportunities. Calibrating the model to the U.S. economy, we generate steady state results for several alternative models for financing health insurance: one in which health insurance is financed primarily through employer contributions that vary with employment, a second where insurance is funded through a non-distortionary, lump-sum tax, and a third where insurance is funded by a payroll tax. We measure the effects of each of the alternatives on output, employment, hours worked, and wages.     

Second thoughts on development accounting

The relative roles of factor inputs and productivity are estimated in explaining the level of economic development. For a large sample of countries, it is shown that international differences in factor inputs account for between two thirds and three quarters of international differences in output per worker if alternative identifying productivity assumptions and a quality-adjusted measure of human capital are employed. For a sample of OECD countries, it is found that all differences in output per worker can be attributed to differences in factor inputs, leaving no role for international productivity differences. This result supports the reasoning of a traditional neoclassical growth model.     

2018 KLEIN LECTURE: INDIVIDUAL AND AGGREGATE LABOR SUPPLY IN HETEROGENEOUS AGENT ECONOMIES WITH INTENSIVE AND EXTENSIVE MARGINS

We study business cycle fluctuations in heterogeneous agent general equilibrium models featuring intensive and extensive margins of labor supply. A nonlinear mapping from time devoted to work to labor services generates operative extensive and intensive margins. Our model captures the salient features of the empirical distribution of hours worked, including how individuals transit within this distribution. We study how various specifications influence labor supply responses to aggregate technology shocks and find that abstracting from intensive margin adjustment can have large effects on the volatility of aggregate hours even if fluctuations along the intensive margin are small.     

Micro and macro elasticities in a life cycle model with taxes

We build a life cycle model of labor supply that incorporates changes along both the intensive and extensive margin and use it to assess the consequences of changes in tax and transfer policies on equilibrium hours of work. We find that changes in taxes have large aggregate effects on hours of work. Moreover, we find that there is no inconsistency between this result and the empirical finding of small labor elasticities for prime age workers. In our model, micro and macro elasticities are effectively unrelated. Our model is also consistent with other cross-country patterns.     

Credible redistributive policies and migration across U.S. states

We ask whether worker mobility has undermined the ability of U.S. states to redistribute income. We build a tractable model where both migration decisions and redistribution policies are jointly determined. Our model features a large number of heterogeneous regions and skilled and unskilled workers with idiosyncratic migration costs. The calibrated model is able to account for the main features of interstate migration, as well as some qualitative features of the cross-sectional distribution of redistributive policies. We conduct a counterfactual experiment in order to isolate the effect of worker mobility on state-level redistributive policies. We find that migration has induced substantial convergence in tax rates across U.S. states, but no race to the bottom. Interestingly, the degree of convergence has been much lower for transfers due to an offsetting tax-base effect.     

Job creation and job destruction in the presence of informal markets

In developing economies, the fraction of informal workers can be as high as 70% of total employment. For economies with significant informal sectors, business cycle fluctuations and labor market policy interventions can have important effects not only on the unemployment rate, but also on the allocation of workers across regulated and unregulated jobs. In this paper, using worker flows data from Brazil, we build, calibrate, and simulate a two-sector search and matching labor market model, in which firms have the choice of hiring workers formally or informally. We show that our model can explain well the main cyclical patterns that lead to those cyclical reallocations. We also show how the effect of government interventions in the labor market depend on the magnitude of the reallocation of labor across regulated and unregulated sectors. For our calibration, policies that decrease the cost of formal jobs, or increase the cost of informality, raise the share of formal employment while reducing unemployment.     

New evidence on wages and employment in worker cooperatives compared with capitalist firms

This article presents new econometric evidence on the comparative behavior of worker cooperatives and capitalist firms, highlighting the differences in wages and employment responses. We use a comprehensive panel data set that covers the entire population of cooperatives and their capitalist counterparts registered in the social security records in Uruguay from April 1996 to December 2005. We analyze the data to study the employment and wage decisions in both types of enterprises, the results of which suggests that their adjustment mechanisms to idiosyncratic price changes and macroeconomic shocks may differ greatly. The data set also allows us to estimate wage and employment variations for members and non-members of cooperatives separately, and provides an empirical test for the so-called degeneration hypothesis. Our findings are broadly consistent with previous studies for Italian cooperatives and plywood cooperatives in the United States. As studies of this kind are so few, our research provides a significant contribution to the empirical literature on labor managed firms. Moreover, comparing worker cooperatives and capitalist firms offers an exceptional opportunity to determine how control by workers may lead to different organizational behavior.     

Calibrating the Employment Effects of Trade

The one-sector model of monopolistic competition and intraindustry trade is merged with the Shapiro–Stiglitz model of efficiency wages to show that introducing trade increases employment in both countries. The intuition is that even when employment is held constant, trade improves worker welfare via increased variety of available goods. The increase in worker welfare relaxes the efficiency wage constraint, permitting an increase in employment. The increase in employment magnifies the benefits of trade. The model is calibrated to US data to estimate the employment effects of eliminating all trade and eliminating trade with Mexico and Canada.     

Is There a Causal Effect of Working Part‐Time on Current and Future Wages?

In this paper, I study the causal effects of part‐time work on current and future wages. To estimate these effects, I use a random effects model with a wage equation capturing the employment history and a dynamic multinomial probit component for the choice of employment status. Exclusion restrictions from the institutional context are exploited to support identification. The results suggest that working part‐time with few hours has a large causal effect on current wages, but more extensive part‐time work does not reduce current wages. However, both types of part‐time work lead to negative long‐term wage effects.     

The trade impact of European Union agricultural preferences

We assess the impact on agricultural trade of European Union (EU) trade policies, using a gravity model based on disaggregated trade flows from 161 developing countries (DCs) to 15 EU member countries. We use a sample selection framework to account for potential selection bias of positive trade flows and provide an explicit measure for relative preference margins. From a policy perspective, our results debunk some of the most widespread criticisms of preferential policies: EU preferences matter and have a positive impact on DCs agricultural exports at both the extensive and intensive margins, although with significant differences across sectors.     

Import Competition and Worker Productivity in Unionized Firms

This paper analyzes the effects of trade and labor market liberalization on wages and worker productivity/effort in a domestic unionized firm with firm-union bargaining over wages and effort. It is shown that both types of liberalization will induce a 'cold shower effect' (a rise in effort) if the union's objective function is more heavily weighted towards employment. However, the welfare effects of the two policies can differ markedly. The paper also identifies a separate productivity cost of protection associated with the distortionary effect of protection on worker effort.     

Are Chinese Cities Too Small?

This paper models and estimates net urban agglomeration economies for cities. Economic models of cities postulate an inverted U shape of real income per worker against city employment, where the inverted U shifts with industrial composition across the urban hierarchy of cities. This relationship has never been estimated, in part because of data requirements. China has the necessary data and context. We find that urban agglomeration benefits are high—real incomes per worker rise sharply with increases in city size from a low level. They level out nearer the peak and then decline very slowly past the peak. We find that a large fraction of cities in China are undersized due to nationally imposed, strong migration restrictions, resulting in large income losses.