Labor Supply Elasticities Research Articles

Using Labor Supply Elasticities to Learn about Income Inequality: The Role of Productivities versus Preferences

Using a general labor supply model in which individuals choose how much to work conditional on productivities and preferences for consumption relative to leisure, we show that the mapping from earnings and hours worked to productivities and preferences can be expressed entirely in terms of reduced-form labor supply elasticities. We investigate the roles that productivities and preferences play in driving income inequality in the United States. Benchmark labor supply elasticity estimates from the literature imply that productivities drive most income inequality. Preferences become increasingly important relative to benchmark, with larger income effects or larger differences between earnings and hours-worked elasticities. (JEL J22, J24, D31, J31, H24, H31)

Agricultural Labor Supply

The labor supply response to agricultural wages is critical to the viability of crop production in high-income countries, which hire a largely foreign farm work force, as well as in low-income countries, where domestic workers move off the farm as the agricultural transformation unfolds. Modeling agricultural labor supply is more challenging than modeling the supply of other agricultural inputs or of labor to other sectors of the economy owing to unique features of agricultural production and farm labor markets. Data and econometric challenges abound, and estimates of agricultural labor supply elasticities are sparse. This review explains the importance and challenges of modeling farm labor supply and describes researchers’ efforts to address these challenges. It summarizes estimates of agricultural labor supply elasticities over the last 80 years, provides insights into variation in these estimates, identifies priority areas for future research, and reviews the most influential empirical work related to this important topic.

The long-run elasticity of labor supply: New evidence for New York City taxicab drivers

I study how New York City taxicab drivers change their work hours in response to a permanent wage change. Exploiting the effective wage increase induced by a regulatory change in fares, I estimate the long-run elasticity of labor supply to be -0.5. I show that the data limitations may have biased the estimates in a previous study that also use data for New York City taxicab drivers. Since the drivers are almost exclusively males, the estimate likely represents male labor supply elasticity. The negative elasticity is consistent with rising wages and declining work hours per worker observed over many decades, and is useful evidence for policymakers to improve tax/ transfer systems.

Labor Market Power in Developing Countries: Evidence from Colombian Plants

How much can employers in low and middle-income countries suppress wages below marginal productivity? Using plant and customs data from Colombia, we exploit pre- determined variation across plants in sales export destination combined with variation in exchange rates to generate plant-specific shocks to marginal revenue productivity and labor demand. We estimate a firm-level labor supply elasticity of around 2.5, implying that workers produce about 40% more than their wage level. Our results indicate that Colombian and US manufacturers have a comparable degree of labor market power.

Trapped in inactivity? Social assistance and labour supply in Austria

Financial incentives affect the labour supply decisions of households. However, the impact usually varies significantly across household types. Whilst there is a substantial amount of literature on the labour supply effects of tax reforms and in-work benefits, the impact of changes in social assistance benefits has received less attention. This paper analyses labour supply responses to changes in social assistance. We show that labour supply elasticities vary substantially across gender and household type. Women exhibit higher labour supply elasticities, both on the intensive and the extensive margins. Additionally, labour supply elasticities are typically higher for singles and for households with children. Using these results, we analyse the impact of the Austrian reform proposal “Neue Sozialhilfe” (New Social Assistance), which was introduced in 2019 and substantially cut social assistance benefits for migrants and families with children. The overall effects of the reform are especially strong for men and migrants. Migrants and couples with children, that is, the groups hardest hit by the reform’s social assistance reductions, show the strongest labour supply reactions to the New Social Assistance. Furthermore, we show that overall, the reform is expected to have a positive, but small, effect on the intensive margin of labour supply.

Monopsony in Movers

We provide new estimates of the separations elasticity, a proximate determinant of the labor supply facing a firm with respect to hourly wage, using matched Oregon employer-employee data. Existing estimates using individual wage variation may be biased by mismeasured wages and use of wage variation unrelated to firm choices. We estimate the impact of the firm component of wage variation on separations using both firm fixed effects estimated from a wage equation as well as a matched IV event study around employment transitions between firms. Separations are a declining function of firm wage policies: we find that the implied firm-level labor supply elasticities generated are around 4, consistent with recent experimental and quasi-experimental evidence, and that they are approximately 3 to 4 times larger that those using individual wages. Further, we find lower separations elasticities for low wage workers, high turnover sectors, and periods of economic downturn but with little heterogeneity by urban status or labor market concentration. We conclude that monopsonistic competition is pervasive, and largely independent of forces driving classical monopsony.

An Economic Theory of Labor Discrimination

This article presents a theory of labor discrimination based on the behavior of economic agents that maximize utility and profits. The article makes use of a monopsony that hires workers that have the same labor productivity, to focus on perfect discrimination; discrimination by quantities of labor hired; and discrimination by types of labor hired. The article concludes that in such contexts, workers with the same productivity may be discriminated in wages and quantities of labor hired, when firms make use of their market power; when there are differences in the opportunity costs and the wage elasticities of labor supply among workers; when there is asymmetric information, self-selection and adverse selection; and when firms or governments decide not to allow for wage discrimination. First best minimum wages may contribute to improve employment and welfare, but higher minimum wages may not.

The cyclicality of labor force participation flows: The role of labor supply elasticities and wage rigidity

Using a representative-household search and matching model with endogenous labor force participation, we study the cyclicality of labor market transition rates between employment, unemployment, and nonparticipation. When interpreted through the lens of the model, the cyclical behavior of transition rates implies that the participation margin is strongly countercyclical: the household's incentive to send the workers to the labor force falls in expansions. We identify two key channels through which the model delivers this result: (i) procyclical values of non-market activities and (ii) wage rigidity. The smaller the value of the extensive-margin labor supply elasticity is, the stronger the first channel is. Wage rigidity helps because it mitigates increases in the return to market work during expansions. Our estimated model replicates well the behavior of transition rates between the three labor market states and thus the stocks, once both features are in place.

On equilibrium in monopolistic competition with endogenous labor

We consider a model of monopolistic competition with several heterogeneous sectors and endogenous labor supply. For low (high) values of the labor supply elasticity, we show that there is always a unique equilibrium. For medium values of the labor supply elasticity, there are either zero or two equilibria.

On time-dependent nominal contracting models with positive trend inflation

We compare the cyclical and welfare implications of positive trend inflation in Taylor (1980) and Calvo (1983) nominal contracting models. Taylor contracts better match the correlations between nominal real variables. They generate persistent and hump-shaped responses of inflation to monetary policy and investment shocks without indexation, while Calvo contracts do not. Trend inflation has significant distorting effects on the shock impulse responses of key variables with Calvo contracts, but not with Taylor contracts. The correlation between price dispersion and trend inflation is weaker with Taylor contracts. With Calvo contracts, wage dispersion and inflation costs are very sensitive to positive trend inflation under plausible variations in the average age of wage contracts, the elasticity of substitution between skills, economic growth, and labor supply elasticity. They are much more stable with Taylor contracts. Still, based on Taylor contracts, the consumer-equivalent welfare gains resulting from a lower inflation trend after 1982 may range from 3.1% to 7.5%.

Identifying key aspects of household behavior in a representative agent framework

We study three key aspects of household behavior, i.e. the form of household preferences, the existence of interdependence between consumption and leisure choices, and the Frisch elasticity of labor supply. We find that an appropriate form of household preferences to use in non-recursive utility functions that incorporates the feature of interdependence is of the Cobb-Douglas type. By solving the household maximization problem, we derive a simultaneous system of two equations, a consumption equation and a labor supply equation, and estimate them with non-linear GMM. Regarding our estimates, the weight of consumption in the utility function, which is on the upper side of the relevant estimates in the literature, and the elasticity of intertemporal substitution seem to drive up the Frisch elasticity value. Our work highlights the importance of both the choice of the form of household preferences and the appropriate estimation procedure in the household maximization problem for obtaining reasonable values of the preference parameters, especially the Frisch elasticity. Our results may be useful for researchers working with the calibration of preference parameters in DSGE models.

General Equilibrium Oligopoly and Ownership Structure

We develop a tractable general equilibrium framework in which firms are large and have market power with respect to both products and labor, and in which a firm's decisions are affected by its ownership structure. We characterize the Cournot–Walras equilibrium of an economy where each firm maximizes a share‐weighted average of shareholder utilities—rendering the equilibrium independent of price normalization. In a one‐sector economy, if returns to scale are non‐increasing, then an increase in “effective” market concentration (which accounts for common ownership) leads to declines in employment, real wages, and the labor share. Yet when there are multiple sectors, due to an intersectoral pecuniary externality, an increase in common ownership could stimulate the economy when the elasticity of labor supply is high relative to the elasticity of substitution in product markets. We characterize for which ownership structures the monopolistically competitive limit or an oligopolistic one is attained as the number of sectors in the economy increases. When firms have heterogeneous constant returns to scale technologies, we find that an increase in common ownership leads to markets that are more concentrated.

Bride Kidnapping and Labour Supply Behaviour of Married Kyrgyz Women

Using data from the 2011 and 2016 Life in Kyrgyzstan surveys, we examine Kyrgyz women's labour supply elasticities at the extensive margin. We use Heckman's two-step approach to predict earnings for the non-participating women and then use these predictions to estimate the participation equation. We find that women's labour supply decision is not influenced by their earnings. We also show that there exists a significant gap in employment propensities among ethnic Kyrgyz women in consensual or arranged marriages compared to women in kidnapped-based marriages. This finding suggests that the practice of bride abduction adversely affects women's probability of employment and might have negative consequences on their economic well-being.

Оценка межвременной эластичности замещения предложения труда для замужних женщин в России

This paper provides an econometric analysis of the labor supply function of married women in Russia based on data from RLMS HSE and methodology from the work (Heckman, MaCurdy, 1980), in which decisions about entering the labor market and the intensity of work are made within a dynamic optimization problem. It is shown that the husband’s leisure and the number of children living in the household have a negative effect on the woman’s hours worked. The estimate of the Frisch elasticity of labor supply with respect to wages lies near 0.16.

The causal effect of the number of children on gender‐specific labour supply elasticities to the firm

AbstractWe estimate the effect of the number of children on the female and the male wage elasticities of labour supply to the firm using instrumental variables estimation in data from the US Current Population Survey (2000–19). Parents' number of children is instrumented with the sex mix of their first two children. We find that the male wage elasticity of labour supply to the firm significantly increases with the number of children, while the female elasticity is not significantly altered. That is, we find evidence that male labour markets become more competitive with the arrival of children. Our results also show that firms have substantial monopsonistic power and, in line with the monopsony theory of the gender pay gap, that male labour markets are more competitive than female markets.

Accounting for Limited Commitment between Spouses When Estimating Labor-Supply Elasticities

The Frisch elasticity of labor supply can be estimated by regressing hours worked on the hourly wage rate, controlling for consumption of the individual worker. However, most household panel surveys contain consumption information only at the household level. We show that proxying individual consumption by household consumption biases estimated Frisch elasticities downward as limited commitment in the household induces individual consumption to behave differently from household consumption. We develop an improved estimation approach that eliminates this bias by exploiting information on the composition of household consumption to infer its distribution. Using PSID data, we estimate Frisch elasticities of about 0.7.

A Study on the Elasticity of Labor Supply of Chinese Taxi Drivers

The theory of labor supply consists of two major theories: neoclassical theory and reference dependence theory. However, the theories are both interoperable and contradictory. Through the literature review of the development of labor supply theories and combined with the study on current development status of China’s taxi industry, this paper made a study on the elasticity of labor supply of Chinese taxi drivers. The theories and models of labor supply are sorted out and analyzed by taking the Chinese taxi industry as an example to be the basis for a further empirical research.

Unearned Income and Labor Supply: Evidence from Survivor Pensions in Austria

We study the effect of lower unearned income on labor supply. To identify the causal effect of an unexpected reduction in unearned income, we exploit a policy reform that lowered survivor pensions in Austria. Men widowed after the survivor pension reform received an approximately 34% lower survivor pension than men widowed before the reform. We follow the employment history of both groups for 150 months and estimate the reform’s effect on labor supply using a regression discontinuity design. The effect of the lower pension is evident immediately after the death of their spouse, is persistent over time, becomes more pronounced over time, and is robust across model specifications. Our baseline result suggests a 3.5 to 5.4 percentage point higher employment rate for survivors in the low pension regime in the long run. The estimated effect corresponds to a labor supply elasticity at the extensive margin with respect to the changes in total income of about -0.9 to -1.3.

Impact of the 2017 Tax Cuts and Jobs Act on Labor Supply and Welfare of Married Households

This paper calculates the change in optimal labor supply and total family welfare resulting from the Tax Cuts and Jobs Act of 2017 (TCJA). We estimate labor supply elasticities for married families in the Current Population Survey from 2015 to 2017, using a joint family utility model. These elasticities are then used to simulate changes in optimal labor supply and resulting change in welfare among families with different characteristics under the new TCJA tax code. We find that optimal hours are lower post-TCJA, relative to before. However, there are differences across family members and family types. Both men’s and women’s optimal hours decline with income starting in the second quintile, but the decline is more dramatic for men. Overall, all families’ welfare increased post-TCJA, with the gains in welfare disproportionately benefiting the wealthy; families with any self-employment income; families with children; and families renting, versus owning, their home.

Labor Market Power in Developing Countries: Evidence from Colombian Plants

How much can employers in low and middle-income countries suppress wages below marginal productivity? Using plant and customs data from Colombia, we exploit pre- determined variation across plants in sales export destination combined with variation in exchange rates to generate plant-specific shocks to marginal revenue productivity and labor demand. We estimate a firm-level labor supply elasticity of around 2.5, implying that workers produce about 40% more than their wage level. Our results indicate that Colombian and US manufacturers have a comparable degree of labor market power.