Too much of a good thing: The impact of product variety on operations and sales performance

We examine the impact of product variety decisions on an operational measure – unit fill rate – and on sales performance. Results are estimated using weekly data over three years from 108 distribution centers of a major soft drink bottler. Our results show that fill rates are negatively associated with product variety at a diminishing rate. In addition, we examine the total effect of product variety on sales including both the direct effect and the indirect effect through operations performance. The total impact of product variety on sales initially is positive, although at a diminishing rate. However, beyond a certain level, increased product variety actually results in lower sales; that is, “too much of a good thing”. Thus, the findings provide a comprehensive understanding of the impact of product variety on operations and sales performance.     

The Perils of Altering Incentive Plans: A Case Study

This paper studies a retail chain that introduced a sales incentive plan that rewarded for exceeding a sales target and subsequently cut the incentive intensity in addition to increasing the target. Utilizing monthly panel data for 54 months for all 53 units of the chain the paper shows that the introduction of the sales incentive plan increased sales and profitability, whereas the changes in the plan lead to a marked drop in sales and profitability. Thus, modifying the incentive plan proved costly for the firm. The results are consistent with the gift‐exchange model of labor contracts. Copyright © 2011 John Wiley & Sons, Ltd.     

A test of cross section dependence for a linear dynamic panel model with regressors

This paper proposes a new testing procedure for detecting error cross section dependence after estimating a linear dynamic panel data model with regressors using the generalised method of moments (GMM). The test is valid when the cross-sectional dimension of the panel is large relative to the time series dimension. Importantly, our approach allows one to examine whether any error cross section dependence remains after including time dummies (or after transforming the data in terms of deviations from time-specific averages), which will be the case under heterogeneous error cross section dependence. Finite sample simulation-based results suggest that our tests perform well, particularly the version based on the [Blundell, R., Bond, S., 1998. Initial conditions and moment restrictions in dynamic panel data models. Journal of Econometrics 87, 115–143] system GMM estimator. In addition, it is shown that the system GMM estimator, based only on partial instruments consisting of the regressors, can be a reliable alternative to the standard GMM estimators under heterogeneous error cross section dependence. The proposed tests are applied to employment equations using UK firm data and the results show little evidence of heterogeneous error cross section dependence.     

The impact of sustainability (environmental,social, and governance) disclosure and board diversity on firm value: The moderating role of industry sensitivity

Using a large panel data set comprising 812 listed European firms, this study investigates whether sustainability disclosure (environmental, social, and governance) and female representation on boards affect firm value. We observe a positive impact of sustainability disclosure and board gender diversity on firm value, suggesting that the best management practices, enhanced stakeholder trust, and female representation on boards improve firm value. We observe that the firms in sensitive industries achieve superior social and governance performance. We also observe that the firms with higher female representation on their boards present significantly superior environmental, social, and governance performance. Our results are robust to different firm and country specific control variables and to year‐ and country‐fixed effects.     

Employee attitudes,customer satisfaction,and sales performance: assessing the linkages in US grocery stores

Using store‐level panel data for a major supermarket company, we investigate the linkages between employee attitudes, customer satisfaction, and sales performance, while controlling for observed and unobserved differences across stores. We find that employee attitudes positively affect customer satisfaction with service but do not affect customer satisfaction with quality or value. Additionally, we find that customer satisfaction with service positively affects sales performance. Our results suggest that employee attitudes affect sales performance through their impact on customer service. Copyright © 2008 John Wiley & Sons, Ltd.     

Semiparametric efficient estimation of dynamic panel data models

This paper extends the semiparametric efficient treatment of panel data models pursued by Park and Simar [Park, B.U., Simar, L., 1994. Efficient semiparametric estimation in stochastic frontier models. Journal of the American Statistical Association 89, 929–936] and Park et al. [Park, B.U., Sickles, R.C., Simar, L., 1998. Stochastic frontiers: a semiparametric approach. Journal of Econometrics 84, 273–301; Park, B.U., Sickles, R.C., Simar, L., 2003. Semiparametric efficient estimation of AR(1) panel data models. Journal of Econometrics 117, 279–309] to a dynamic panel setting. We develop a semiparametric efficient estimator under minimal assumptions when the panel model contains a lagged dependent variable. We apply this new estimator to analyze the structure of demand between city pairs for selected U.S. airlines during the period 1979 I–1992 IV.     

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.     

Firm efficiency and stock returns

In this paper, we investigate the role of firm efficiency in asset pricing using a sample of US publicly listed companies for the period 1988–2007. We employ non-parametric data envelopment analysis (DEA) on various input/output combinations, focusing on sales and market value as output measures in the construction of the frontier technologies. Using these performance measures, we examine whether efficient firms perform differently from inefficient firms following standard financial analysis procedures. First, we employ performance attribution regressions, by forming portfolios based on efficiency scores and tracking the performance of the various portfolios over time. Second, we perform cross-sectional/panel regressions to determine whether firm efficiency indeed has explanatory power for the cross-section of stock returns. Our results suggest that firm efficiency plays an important role in asset pricing and that efficient firms significantly outperform inefficient firms even after controlling for known risk factors.     

Financial Crisis and Changes in Firm Governance,Corporate Structure,and Boundaries

The paper researches the effects of the 2008 financial crisis on various measures of firm governance, including the impact on firm boundaries such as buyer–supplier relationship, capital structure, and employment effects. Using a unique data set of 1686 Eastern European firms, we examine how the crisis affected the financial and employment decisions of different industrial and service sector firms. As these firms faced a steep decline in sales and capacity utilization, as well as credit constrains, they were forced to make significant and far reaching changes in various aspects of their operations. We discuss the implications of these changes. Copyright © 2013 John Wiley & Sons, Ltd.     

Information systems and technology sourcing strategies of e-Retailers for value chain enablement

In the e-Retail industry, a well-designed IT infrastructure is essential in creating a tightly integrated value chain and delivering high quality service. With intense competition for market share and profits, information systems and technology (IST) sourcing decisions are becoming increasingly important to e-Retail firms to support continued growth and market responsiveness. Drawing on the contingency theory, we examine organizational and environmental factors that influence an e-Retailer's IST sourcing strategy of make versus buy in enabling its value chain activities, and we also look at firm-level performance impacts of IST sourcing decisions that involve bundling across value chain activities. We test the proposed model and hypotheses using a panel data set of 307 firms over the period of 2006–2010. The results show that firms that make transformative IT investments tend to source a smaller portion of IST for their e-Retail value chain activities than firms that pursue automate or informate as their strategic role for IT investment. Capabilities are positively associated with IST sourcing. Firms experienced in e-Retail are more likely to build rather than buy their IST. In addition, we find mimicking behavior for IST sourcing among firms in the same merchandizer category. We find that IT strategic role is strongly associated with growth metric, whereas sourcing decisions predominantly impact operational performance measures. There is partial evidence that alignment between IT strategic role and IST sourcing decisions results in better performance effects. Moreover, complementary IST sourcing of synergistic marketing and sales activities positively impacts Web sales and conversion rate, but the sourcing combination of logistics, operations, and sales activities is associated with lower Web sales and conversion rate.     

Ownership structure,information asymmetry and growth of the firm: Implications from nonfinancial firms listed in S&P500

This paper investigates the association between growth of the firm and ownership structure under conditions of information asymmetry. The objective is to show the effects of information asymmetry (favorable vs. adverse selection) on the choice of the ownership structure that helps firms grow. Our sample includes nonfinancial firms listed in the S&P500 over the period 2000 to 2016. The dependent variable is growth of the firm measured by growth in sales. The independent variables are proxies for changes in ownership structure, individual investors, investment managers, and brokerage firms. Observations are grouped according to level of information asymmetry (high or low) using three proxies for information asymmetry: beta of return on equity (ROE), probability of default of ROE, and q ratio. The results conclude that (a) changes in ownership structure affect growth of the firm positively and (b) the effect of ownership structure is more significant and consistent at low level of information asymmetry. The contribution of the paper is threefold. First, it extends the arguments of corporate governance by showing the impact of ownership structure on growth of the firm. Second, the paper offers robust evidence that growth of the firm is associated with low level of information asymmetry. Third, the paper shows that fundamental financial information can help lessen the level of information asymmetry and thus help firms grow.     

Do Multiple Directorships Increase Firm Value? Evidence from Independent Directors in Hong Kong

This paper studies the effect of independent directors’ multiple directorships (MDs) on firm value and examines the countervailing effects of quality and “busyness.” Using a unique panel data set covering all Hong Kong‐listed firms, we find that despite independent directors’ busyness, there is a strong and positive relation between the number of MDs of independent directors and firm value. We also find, however, that the positive effect of MDs declines at higher levels of busyness. We find that the effects of MDs on firm value are stronger under better corporate governance standards. We show that independent non‐executive directors (INEDs) with a CEO position underperform because of busyness. After the requirement of increasing the minimum number of INEDs in Hong Kong from 2004, the quality effect of MDs seems to be reduced, implying the policy may have increased the busyness of some INEDs. Our results are robust to a range of estimation procedures, including alternative MD and firm‐performance measurements, and 2SLS. Our empirical evidence suggests that highly engaged independent directors still improve firm value and supports increasing the minimum requirement for the fraction of independent directors, even under a supply constraint of qualified directors.     

Valuation effects of earnings management on hotel firm value

This study investigates the valuation effects of earnings quality on a hotel’s firm value between 1991 and 2017. A unique perspective from the financial crisis period is utilized to explore the changes further when hotel firms face financial distress. We adopt the ordinary least squares (OLS) regression method in this study. Generalized Least Squares (GLS) regression and Petersen’s Clustered Standard Error Model to confirm the validity of results. Seemingly unrelated regressions (SUR) analysis is adopted to compare the impact of the financial crisis on subsamples of low and high Altman Z-scores and subsamples of non-Big-4 and Big-4 firms. Substantial evidence supports our assertion that increased discretionary accruals and earnings management bring down earnings quality and, in turn, decrease a hotel’s firm value. Results reinforce that the 2008 financial crisis had an impact on the relationship between earnings management and hotel firm value. The negative effect that discretionary accruals and earnings management have on hotel firm value is mitigated for hotel firms with low credit strength or not audited by one of the Big-4 firms. Stockholders of hotel firms should be aware of the impact and enforce additional measures to control earnings management activities during a financial crisis.     

Testing for serial correlation,spatial autocorrelation and random effects using panel data

This paper considers a spatial panel data regression model with serial correlation on each spatial unit over time as well as spatial dependence between the spatial units at each point in time. In addition, the model allows for heterogeneity across the spatial units using random effects. The paper then derives several Lagrange multiplier tests for this panel data regression model including a joint test for serial correlation, spatial autocorrelation and random effects. These tests draw upon two strands of earlier work. The first is the LM tests for the spatial error correlation model discussed in Anselin and Bera [1998. Spatial dependence in linear regression models with an introduction to spatial econometrics. In: Ullah, A., Giles, D.E.A. (Eds.), Handbook of Applied Economic Statistics. Marcel Dekker, New York] and in the panel data context by Baltagi et al. [2003. Testing panel data regression models with spatial error correlation. Journal of Econometrics 117, 123–150]. The second is the LM tests for the error component panel data model with serial correlation derived by Baltagi and Li [1995. Testing AR(1) against MA(1) disturbances in an error component model. Journal of Econometrics 68, 133–151]. Hence, the joint LM test derived in this paper encompasses those derived in both strands of earlier works. In fact, in the context of our general model, the earlier LM tests become marginal LM tests that ignore either serial correlation over time or spatial error correlation. The paper then derives conditional LM and LR tests that do not ignore these correlations and contrast them with their marginal LM and LR counterparts. The small sample performance of these tests is investigated using Monte Carlo experiments. As expected, ignoring any correlation when it is significant can lead to misleading inference.     

Leverage and firm growth: an empirical investigation of gazelles from emerging Europe

The aim of the paper is to assess the impact of leverage on gazelles’ performance while controlling for firm characteristics, macroeconomic environment, and characteristics of domestic banking sectors. Using a sample of 1105 gazelles from Central, Eastern, and South-Eastern European (CESEE) countries for the period 2006–2014, we find that leverage negatively affects firm growth. The results prove to be robust regarding the use of different estimation approaches, alternatives variables for firm growth, and different sub-samples. Our results suggest that improving access to various sources and types of financing represents a key issue for supporting gazelles’ growth. We also find that macroeconomic environment and banking sector characteristics are important determinants of gazelles’ growth. The economic growth positively influences sales and total assets growth, while the effect of financial and economic development varied with the firm growth measure used. Our findings provide empirical evidence for the need of policy initiatives at national and European Union level to facilitate the growth of small businesses.

     

Fundamental analysis of stocks by two‐stage DEA

Fundamental analysis of stocks links financial data to firm value in two consecutive steps: a predictive information link tying current financial data to future earnings, and a valuation link tying future earnings to firm value. At each step, a large number of causal factors have to be factored into the evaluation. To effect these calculations, we propose a new two‐stage multi‐criteria procedure, drawing on the techniques of data envelopment analysis. At each stage, a piecewise linear efficiency frontier is fitted to the observed data. The procedure is illustrated by a numerical example, analyzing some 30 stocks in the Spanish manufacturing industry in the years 1991–1996. Copyright © 2004 John Wiley & Sons, Ltd.     

Skill shortages and firms' employment behaviour

This study investigates the effects of skill shortages on the dynamics of employment at the firm level for UK manufacturing between 1984–94. We find that shortages of skilled labour have a statistically significant effect on firms' employment behaviour. It has a positive effect on firms' adjustment costs leading to employment being more sluggish to respond when the labour market is tight, implying that employment adjustment will be more responsive in the downward direction. This result is robust to the inclusion of a measure of firms' sales expectations, with the effect of skill shortages being greater in periods when firms expect sales to rise.     

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.     

The impact of financial performance on environmental policy: does firm life cycle matter?

Existing literature has provided inconclusive evidence regarding the impact of financial performance on firm policy relating to environmental issues. In this paper, we propose that the influence of corporate financial performance on corporate environmental policy is unlikely to be monotonic but, rather, will vary with firm life cycle. We test this hypothesis by the application of static and dynamic techniques on panel data from UK companies. The results provide support for our hypotheses that financial performance has the strongest impact on environmental policy in the maturity stage of the firm life cycle and the weakest impact in the rapid growth stage. Copyright © 2007 John Wiley & Sons, Ltd and ERP Environment.