Returns to specialization,competition, population,and growth

Using an expanding-variety endogenous growth model with purposive human capital accumulation, this paper provides an alternative explanation of why we may observe an ambiguous correlation between product market competition (PMC) and economic growth, and between population and economic growth rates. Our explanation is based on the notion of ‘returns to specialization’. Under the model's assumptions, PMC and economic growth are ambiguously correlated when returns to specialization are decreasing, whereas population growth and productivity growth are ambiguously correlated when returns to specialization are increasing. From a theoretical point of view, these results are explained by the presence or absence of an ‘increasing production-complexity’ effect associated to the use of a larger number of intermediate-input varieties in the same production process.     

ICT Adoption and Heterogeneity in Production Technologies: Evidence for Chilean Retailers*

The adoption of information and communication technology (ICT) can have far‐reaching effects on the nature of production technologies. Because ICT adoption is incomplete, especially in developing countries, different groups of firms will have different production technologies. We estimate a latent class stochastic frontier model, which allows us to test for the existence of multiple production technologies across firms and consider the associated implications for efficiency measures. We use a unique data set of Chilean retailers, which includes detailed information on ICT adoption. We find three distinct production technologies. The probability of membership in a more productive group is positively related to ICT use.     

Occupational Labour Demand and the Sources of Non‐neutral Technical Change*

This article introduces a two‐step empirical approach for examining both the nature and sources of non‐neutral technical change across multiple occupations. First, conventional labour‐demand parameter estimates and unbiased tests for neutrality are obtained in the context of a flexible cost system. The resulting input‐specific indices of technical change, unconstrained with respect to time path, facilitate subsequent evaluation of proposed sources. In our application to employment decisions of airline firms, we find labour‐saving technical change that is non‐neutral across occupations. We also document occupation‐specific responses to aircraft technology adoption, route system developments and an unprecedented range of technical change elements.

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Performance Pay,Union Bargaining and Within‐Firm Wage Inequality*

Theory predicts that performance pay boosts wage dispersion. Workers retain a share of individual productivity shocks and high‐efficiency workers receive compensation for greater effort. Collective bargaining can mitigate the effect of performance pay on wage inequality by easing monitoring of common effort standards and group‐based pay schemes. Analyses of longitudinal employer–employee data show that the introduction of performance‐related pay raises wage inequality in non‐union firms, but not in firms with high union density. Although performance‐related pay appears to be on the rise, the overall impact on wage dispersion is likely to be small, particularly in European countries with influential unions.     

Institutions and Wage Determination: a Multi‐country Approach*

We present an empirical analysis of the determinants of labour cost in OECD countries, with particular reference to the impact of labour market institutions from 1960 to 1994. We show that labour market regulations can explain a large part of the labour cost rise in OECD countries in the last few decades once we control for productivity. These results are consistent with the findings of a companion paper [ Nickell, Nunziata and Ochel (2005) Economic Journal, Vol. 115, pp. 1–27] where the effects of institutions on unemployment are examined. We present also a discussion of the econometric issues related to the estimation of a macro pooled model like ours. We focus, among other things, on the hypothesis of poolability and on the cointegration properties of the model. The explanatory power of the model is finally tested by means of a series of country by country dynamic simulations.     

The Productivity Effects of Internal and External R&D: Evidence from a Dynamic Panel Data Model*

We examine the impact of internal and external R&D on labour productivity in a 6‐year panel of Dutch manufacturing firms. We apply a dynamic panel data model that allows for decreasing or increasing returns to scale in internal and external R&D and for economies of scope. We find complementarity between internal and external R&D, with a positive impact of external R&D only evident in case of sufficient internal R&D. These findings confirm the role of internal R&D in enhancing absorptive capacity. The scope economies are accompanied by decreasing returns to scale at high levels of internal and external R&D. The analysis indicates that productivity grows by increasing the share of external R&D in total R&D.     

Performance pay, risk attitudes and job satisfaction

We present a model in which workers with greater ability and greater risk tolerance move into performance pay jobs to capture rents and contrast it with the classic agency model. Estimates from the German Socio-Economic Panel confirm testable implications drawn from our model. First, before controlling for earnings, workers in performance pay jobs have higher job satisfaction, a proxy for on-the-job utility. Second, after controlling for earnings, workers in jobs with performance pay have the same job satisfaction as those not in such jobs. Third, those workers in performance pay jobs who have greater risk tolerance routinely report greater job satisfaction. While these findings support models in which workers capture rent, they would not be suggested by the classic agency model.     

Employment,Inequality and the UK National Minimum Wage over the Medium‐Term*

We assess the impact of the national minimum wage (NMW) on employment and inequality in the UK over the decade since its introduction. We evaluate its effects in each year, using an incremental differences‐in‐differences (IDiD) estimator. Identification is based on variation in the bite of the NMW across local labour markets and the different sized year on year up‐ratings. We find that an increased bite of the NMW is associated with falls in lower tail wage inequality. While the average employment effect over the entire period is broadly neutral, there are small but significant positive NMW effects from 2003 onwards.     

The Impact of Training on Productivity and Wages: Evidence from British Panel Data*

It is standard in the literature on training to use wages as a sufficient statistic for productivity. This paper examines the effects of work‐related training on direct measures of productivity. Using a new panel of British industries 1983–96 and a variety of estimation techniques we find that work‐related training is associated with significantly higher productivity. A 1% point increase in training is associated with an increase in value added per hour of about 0.6% and an increase in hourly wages of about 0.3%. We also show evidence using individual‐level data sets that is suggestive of training externalities.     

Seasonality and Wage Responsiveness in a Developing Agrarian Economy

This paper studies the wage responsiveness of labour supply and demand, simultaneously addressing the twin issues of the non-clearing of developing rural labour markets and seasonality. It employs a data set pertaining to south-central India, and limits itself to the agricultural market for daily-rated labour (by far the predominant form of wage contract in the sample villages). Estimating a theoretically robust and empirically justified disequilibrium model of the agricultural labour market, we find no evidence of backward-bending supply curves or 'vertical' demand curves, contrary to findings in the literature. Further, while the agricultural labour market appears to be in equilibrium during the kharif (or rainy) season, it manifests excess supply in the rabi (or post-rainy) season.     

Impacts of Prime‐age Adult Mortality on Labour Supply: Evidence from Adolescents and Women in South Africa*

This paper examines the impact of prime‐age adult mortality on the transition made by adolescents from school to the labour market and on female adult labour force participation decisions in South Africa. We find, first, that deaths of prime‐age adults significantly increase both male and female adolescents’ labour force participation as they stop their schooling. Secondly, the death of prime‐age adults in general also decreases school enrolment ex ante. Thirdly, female adults tend to join the labour force following the death of prime‐age adult males. These findings imply that prime‐age adult mortality increases labour supply and disrupts human capital formation.     

Inter‐industry Wage Differences and Individual Heterogeneity*

Two well‐established findings are apparent in the analyses of individual wage determination: cross‐section wage equations can account for less than half of the variance in earnings and there are large and persistent inter‐industry wage differentials. We explore these two empirical regularities using longitudinal data from the British Household Panel Survey (BHPS). We show that around 90% of the variation in earnings can be explained by observed and unobserved individual characteristics. However, small – but statistically significant – industry wage premia do remain, and there is also a role for a rich set of job and workplace controls.     

Profit Sharing and Training*

We analyze the impact of profit sharing on training intensity. Profit sharing may affect training because it is a credible commitment by firms to reward firm‐specific skills, may reduce turnover and leads to peer group pressure to participate in training courses. To eliminate possible selectivity effects, we combine matching with difference‐in‐differences. We identify the proportion of employees participating in profits and differentiate profit sharing according to the percentage of the workers covered. Using German establishment data we find that profit sharing only has a significant effect on training intensity if the majority of the workforce benefits from it.     

The age-productivity gradient: Evidence from a sample of F1 drivers

Estimating the effect of aging on productivity requires clean measures of productivity. Additionally, one needs to control for unobserved heterogeneity at the worker, firm and worker/firm level, to account for the role of experience and to correct for selection bias. We tackle these issues exploiting a panel of Gran Prix Formula One drivers, which provides a unique setting to single out the data requirements needed to credibly estimate the effect of age on productivity. Results robust to the inclusion of worker, firm and match effects show that the age-productivity link has an inverted U-shape profile with a peak at the age of 30-32. The use of repeated cross-sections of individuals also produces consistent results provided that cohort effects are properly accounted for. Relying on team-average measures of productivity makes instead inference harder.     

Impact of cultural diversity on wages,evidence from panel data

This paper combines individual data from the British Household Panel Survey and yearly population estimates for England to analyse the impact that cultural diversity has on individual wages. Do people living in more diverse areas earn higher wages after controlling for other observable and unobservable characteristics? The results show that cultural diversity is positively associated with wages, but only when cross-section data are used, while panel data estimations show no impact of diversity. Since natives with comparatively higher skills – and wages – tend to self-select into more diverse areas, cross-section analyses may produce upwardly biassed results.     

Wage inequality and the role of multinationals: evidence from UK panel data

Despite the increased attention on the impacts of globalisation, there has been little empirical investigation into the impact of multinational firms on the domestic labour market and in particular wage inequality, this is in spite of a rapid increase in foreign direct investment (FDI) at around the same time of rising inequality. Using UK panel data, this paper tests whether inward flows of FDI have contributed to increasing wage inequality. Even after controlling for the two most common explanations of wage inequality, technology and trade, we find that FDI has a significant effect upon wage inequality, with the overall impact of FDI explaining on average 11% of wage inequality.     

Firms' relative sensitivity to aggregate shocks and the dynamics of gross job flows

We propose the coefficient of variation as a measure of the cyclical volatility of gross job flows that is immune to trends in net job creation. In addition, we show that this measure is intrinsically related to the importance of aggregate shocks for fluctuations in job flows at the firm level. Using data for the Portuguese economy, we conclude that the coefficient of variation is a more robust measure for the underlying volatility of gross job flows. We also find that large and old firms exhibit higher relative sensitivity to aggregate shocks than small and young firms, and have a disproportional influence over the dynamics of aggregate job reallocation. In particular, since large and old firms tend to reallocate jobs less procyclically than small and young firms, job reallocation is less procyclical than if all firm classes were equally sensitive to aggregate shocks.     

State minimum wages and business location: Evidence from a refined border approach

This study examines the effect of state minimum wage changes on new and existing business establishments. It employs a refined border approach in conjunction with other differencing methods to control for unobserved heterogeneous area characteristics. The findings suggest that state minimum wage increases deter new establishments from locating in an area, particularly in industries that rely on low-education workforces, such as the retail and manufacturing industries. However, existing establishments, regardless of industry type, are not found to be adversely affected by minimum wage policy.     

Unionisation structures, productivity and firm performance: New insights from a heterogeneous firm model

This paper introduces collective bargaining at the firm and at the sector level into the heterogeneous firm model of Melitz and Ottaviano (Melitz, M. J., Ottaviano, G. I. P., 2008. Market size, trade, and productivity. Review of Economic Studies 75 (1), 295-316). It then analyses how the two bargaining regimes change aggregate industry productivity and firm performance relative to a competitive labour market. While sector-level bargaining forces the least productive firms to exit and thus increases average productivity relative to the competitive benchmark, firm-level bargaining allows less productive firms to stay in the market and thus reduces average productivity. Sector-level bargaining also results in higher average output and profit levels than either firm-level bargaining or a competitive labour market. The paper also shows that the choice between sector- and firm-level bargaining can involve a trade-off between product variety and product prices: Not only the average price level but also product variety tends to be lower under sector-level bargaining than under firm-level bargaining.