How do Labor Unions Influence the Gender Earnings Gap? A Comparative Study of the US and Korea

Abstract

This paper provides a comparative study of the United States and Korea regarding the effects of unions on gender earnings gaps in 2004. Using datasets representative of the population of the US and Korea, this contribution shows that gender differences in the workers' observed characteristics and the unobserved component reduce gender earnings gaps in union jobs in both the US and Korea. Fringe benefits in the union sector attract women workers with higher labor market qualifications into the union sector and thereby reduce the gender earnings gap in this sector. The study finds that this self-selection process in the union sector is stronger in Korea than in the US, but the seniority-based wage system that prevails in the Korean union sector widens the gender earnings gap.     

The rise and fall of WebTrust

While prior research mainly focused on the impact of third-party-certified web assurance seals on consumers' perceptions and purchasing behaviors, little research has been conducted on the managerial decision-making process about the selection, implementation, and the abandonment of such seals. Of particular interest here is the WebTrust seal, jointly developed by the AICPA and the CICA. We take a qualitative case study approach to understand the motivations and rationale of a large North American telecommunications firm's management behind the decisions about the selection, implementation, and abandonment of its WebTrust seal. Our case firm was one of the first to obtain the seal on its online shopping website. Semi-structured interview results suggest that the implementation and the subsequent abandonment of WebTrust may be explained by several theoretical frameworks — the managerial accounting perspective, organizational slack theory, innovation theory, and institutional theory. First, the case firm's leader attitude in innovation, its extra resources available, coupled with the endorsement of the accounting profession led to the implementation of WebTrust. Second, when the benefits of WebTrust versus its costs were questioned and other companies increasingly abandoned the seal, our case firm decided to follow this trend.     

The pricing of foreign currency options under jump‐diffusion processes

In this article, the authors derive explicit formulas for European foreign exchange (FX) call and put option values when the exchange rate dynamics are governed by jump‐diffusion processes. The authors use a simple general equilibrium international asset pricing model with continuous trading and frictionless international capital markets. The domestic and foreign price level are introduced as state variables that contain jumps caused by monetary shocks and catastrophic events such as 9/11 or Hurricane Katrina. The domestic and foreign interest rates are stochastic and endogenously determined in the model and are shown to be critically affected by the jump risk of the foreign exchange. The model shows that the behavior of FX options is affected through the impact of state variables and parameters on the nominal interest rates. The model contrasts with those of M. Garman and S. Kohlhagen (1983) and O. Grabbe (1983), whose models have exogenously determined interest rates. © 2007 Wiley Periodicals, Inc. Jrl Fut Mark 27:669–695, 2007     

The Effects of Youth Job Seeker Allowance in South Korea

The severity of youth unemployment in South Korea has prompted the government to implement various preventive measures such as employment services and vocational training. Local governments implemented a Youth Job Seeker Allowance in 2016 as a new form of support, which was adopted by the central government in 2017. This study examines the impact of the Youth Job Seeker Allowance in South Korea on employment. It finds that the allowance had a positive effect on employment; recipients of the allowance have a higher probability of being employed. However, recipients took longer to obtain employment than non-recipients, corroborating previous studies that unemployment benefits lengthen the duration of unemployment. But, recipients of the allowance have more time to look for quality work. Therefore, although the Youth Job Seeker Allowance has the effect of demotivating recipients from looking for employment, its limited duration of three months obliges them to engage in job search activities. The study has implications for the introduction of Youth Job Seeker Allowance systems to support job search activities.     

Economic cost–benefit analysis of the addictive digital game industry

This study attempts to estimate the economic costs and benefits of the addictive digital game industry. Addiction to digital games induces economic costs such as increase in crime, facilities investments for curbing addiction, increase in counselling costs and other welfare losses. As a case study, we investigate the digital game industry in South Korea which is known to have one of the highest rates of game addiction. According to our calculations, the annual cost of game addiction is estimated to be approximately $3.5B while the annual benefit is approximately $24.3B ($3.7B for addicted user market). The proportion of the total costs to total benefits from the game industry is an alarming 14% (95% for addicted user market). We offer some policy recommendations.     

The moderating effect of innovation protection mechanisms on the competitiveness of service firms

This empirical study examines the effectiveness of innovation protection mechanisms (IPMs) in capturing returns from innovation in service firms. To identify their effects, we set five types of IPMs (patents, other intellectual property rights, speed to market, secrecy, and complementary resources) as a moderator of the relationships between the innovation and firm competitiveness. Through a sample of service firms from the Korean Innovation Survey, the results of this study indicated that firm competitiveness cannot be influenced by service innovation alone but rather it is influenced by service innovation used in conjunction with IPMs other than patents. The results contribute to understanding innovation protection strategies for better competitiveness of service firms.     

Professors on the Board: Do They Contribute to Society Outside the Classroom?

According to our data, 38.5 % of S&P 1500 firms have at least one professor on their boards. Given the lack of research examining the roles and effects of academic faculty as members of boards of directors (professor–directors) on corporate outcomes, this study investigates whether firms with professor–directors are more likely to exhibit higher corporate social responsibility (CSR) performance ratings. Results indicate that firms with professor–directors do exhibit higher CSR performance ratings than those without. However, the influence of professor–directors on firm CSR performance ratings depends on their academic background—the positive association between the presence of professor–directors and firm CSR performance ratings is significant only when their academic background is specialized (e.g., science, engineering, and medicine). Finally, this positive association weakens when professor–directors hold an administrative position at their universities.     

Earnings management and deregulation: The case of motor carriers

This study investigates the discretionary accounting choices of federally-regulated interstate motor carriers during the period in the late 1970s when the U.S. government successfully deregulated the industry. We predict that motor carriers were likely to use income-decreasing earnings management to lessen the public perception of excessive industry profits and thus to avoid deregulation that during this period of heightened political cost.     

Testing for unobserved heterogeneity in exponential and Weibull duration models

We examine the use of the likelihood ratio (LR) statistic to test for unobserved heterogeneity in duration models, based on mixtures of exponential or Weibull distributions. We consider both the uncensored and censored duration cases. The asymptotic null distribution of the LR test statistic is not the standard chi-square, as the standard regularity conditions do not hold. Instead, there is a nuisance parameter identified only under the alternative, and a null parameter value on the boundary of the parameter space, as in Cho and White (2007a). We accommodate these and provide methods delivering consistent asymptotic critical values. We conduct a number of Monte Carlo simulations, comparing the level and power of the LR test statistic to an information matrix (IM) test due to Chesher (1984) and Lagrange multiplier (LM) tests of Kiefer (1985) and Sharma (1987). Our simulations show that the LR test statistic generally outperforms the IM and LM tests. We also revisit the work of van den Berg and Ridder (1998) on unemployment durations and of Ghysels et al. (2004) on interarrival times between stock trades, and, as it turns out, affirm their original informal inferences.     

Household wealth accumulation and portfolio choices in Korea

This paper constructs a quantitative lifecycle model with uninsurable labor income and housing return risk to investigate how Korean households make saving and portfolio decisions. The model not only incorporates the special roles housing plays in the portfolio of households: collateral, a source of service flows, as well as a source of potential capital gains or losses, but also adds to existing models of wealth accumulation some unique institutional features present in Korea, namely the rental system (‘chonsae’) and the lack of a mortgage system. When the model is calibrated to match the Korean economy, several key features of the data are better able to be reproduced. The paper also analyzes the role of institutional features by comparing several alternative housing market arrangements to assess their impact on wealth accumulation, portfolio choices, and homeownership. A 10 percentage points reduction in down-payment requirement is associated with approximately 1 percentage point increase in the aggregate homeownership ratio in Korea. Lower down-payment also increases the fraction of aggregate wealth held in housing assets but lowers aggregate net worth with mixed demographic implications.