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.     

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.     

How complex are networks playing repeated games?

Summary. This paper examines implications of complexity cost in implementing repeated game strategies through networks with finitely many classifiers. A network consists of individual classifiers that summarize the history of repeated play according to a weighted sum of the empirical frequency of the outcomes of the stage game, and a decision unit that chooses an action in each period based on the summaries of the classifiers. Each player maximizes his long run average payoff, while minimizing the complexity cost of implementing his strategy through a network, measured by its number of classifiers. We examine locally stable equilibria where the selected networks are robust against small perturbations. In any locally stable equilibrium, no player uses a network with more than a single classifier. Moreover, the set of locally stable equilibrium payoff vectors lies on two line segments in the payoff space of the stage game. Received: May 9, 1997; revised version: November 18, 1997     

Human resource management, corporate governance structure and corporate performance in Korea: a comparative analysis of Japan, US and Korea

This paper investigates the influences of human resource management (HRM) and corporate governance structure on the corporate performance in Korean firms. Prior to the Asian economic crisis, large Korean firms mostly followed the Japanese style HRM paradigm where the practice of lifetime employment is guaranteed. However, in the aftermath of the crisis, they have pursued structural downsizing and changed their paradigm more towards the US HRM paradigm where inter-firm mobility becomes prominent in the flexible labor market. The empirical evidence introduced in this paper affirms the argument that the first step towards a HRM paradigm shift in Korea should be the establishment of an efficient corporate governance structure. This implies that a simple switch from the Japanese HRM paradigm to the US model may not improve corporate performance unless the change is accompanied by a solution to the problems posed by the minority controlling structure of Korean companies. The implications of this study for guiding policy in developing countries having labor market rigidities and underdeveloped corporate governance is clear. Corporate governance systems may provide an appropriate starting point for the development of any policies aimed at building an efficient human resource management system and a flexible labor market.     

Appraisals,Transaction Incentives,and Smoothing

This article is structured around three principal objectives. The first is to determine whether any incentives for appraisals support an underlying purchase offer, which may be termed a transaction bias. Appraisals that are lower than purchase prices could involve additional cost for justification and thus undermine the transaction. The second objective is to test whether appraisal data are smoothed or exhibit less volatility than purchase data. The article compares the volatility of separate appraisal and purchase data. Given separate appraisal and purchase time series, the third objective is to derive the implied optimal appraisal updating rule.The model is applied to appraisal and purchase price indices for 3.7 million repeat transactions on mortgages bought by Fannie Mae and Freddie Mac by using monthly data from January 1975 to December 1993. The estimation procedure uses generalized autoregressive conditioned heteroskedastic (GARCH) analysis to take account of persistence in means and volatility in the house price time series. The article draws three principal conclusions. First, appraisals are systematically higher than purchase data, a first-moment differential. Second, appraisal smoothing does not occur generally. Third, the appraisal updating rule for the United States appears to involve error correction whereby underappraisals from pervious periods are eventually adjusted.     

Forecasting future demand for large-screen television sets using conjoint analysis with diffusion model

The methodological framework proposed in this paper addresses two limitations of the basic Bass diffusion model: that it does not reflect competition among products nor does it forecast demand for products that do not exist in the marketplace. The model consists of four steps. First, to investigate consumer preferences for product attributes, we use conjoint analysis to estimate the utility function of consumers. Next we estimate the dynamic price function of each competing product to reflect technological changes and the evolving market environment. Then we derive dynamic utility function by combining the static utility function and the price function. Finally, we forecast the sales of each product using estimated market share and sales data for each period, which are derived from the dynamic utility function and from the Bass diffusion model, respectively.We apply this model to South Korea's market for large-screen televisions. The results show that (1) consumers are sensitive to picture resolution and cost and (2) in the near future, should the market see the introduction of liquid crystal display (LCD) TVs with screens larger than 50 inches, the high resolution and steep price drop of LCD will lead LCD TVs to capture a larger market share than TVs with other display types. Finally, our results show that TVs with 40-inch screens are preferred over TVs with larger screens.