Assoc Prof Bobae Choi

Synopsis The research problem This study examines the relationship between carbon management system quality and firm performance and investigates the mechanisms through which a carbon management system relates to firm performance. Motivation or theoretical reasoning Despite growing attention from academia and practice on carbon accounting in recent years, little is known about firms' strategic implementation of carbon management systems and their impact on firms' financial outcomes. Drawing on the resource-based view and institutional theory, this study argues that carbon management system implementation can create competitive advantages for firms through product differentiation and cost leadership. However, adopting quality management systems for carbon mitigation can be costly for firms. Additionally, not all firms would achieve such a differentiation advantage through a carbon management system. The test hypotheses H1: There is no relationship between the quality of a carbon management system and firm financial performance. H2: Carbon-intensive sectors have no moderating effect on the relationship between the quality of a carbon management system and firm financial performance. Target population Corporate managers and stakeholders including investors, international regulators, and standard settees. Adopted methodology Ordinary least square regressions. Analyses Corporate financial performance is measured by return on assets, calculated as earnings before extraordinary items divided by total assets at fiscal year-end. Our independent variable of interest is the quality measure of a carbon management system (QCMS). Following Tang and Luo (2014) and Luo and Tang (2016), QCMS is calculated as the average equal weighted sum of the standardized values from the 10 elements of a carbon management system. For additional tests, alternative performance measures (e.g., Tobin's Q, return on equity, operating return on assets [ROA], and cash flow from operating activities to total assets) and disaggregated ROA components are employed as dependent variables. Findings We find that a firm's carbon management system quality is positively associated with its financial performance. A better-quality carbon management system is especially associated with higher revenues, margins, and R&D expenditures. In addition, individual carbon management system components exhibit heterogeneous influences on financial performance. Specifically, the areas related to carbon disclosure and external carbon assurance have an incremental impact on financial performance. The positive association between a carbon management system and financial performance is stronger for firms operating in carbon-intensive sectors and firms with a higher level of carbon emissions. The carbon regulation affects the sensitivity of financial performance differently in intensive and non-intensive sectors in response to carbon management system quality.

We examine the connection between firm performance and a CEO's previous position (inside or outside the firm), using Covid-19 as an exogenous shock. Firms led by insider CEOs outperformed those led by outsider CEOs in terms of return on assets during the Covid-19 crisis period in 2020, but there was no performance differential in the period before the crisis. Additional tests indicate that outperformance under insider CEOs is observed in firms holding more cash and firms with a higher proportion of internally promoted non-CEO executives. These findings have important implications for boards of directors making CEO appointments.

Objectives: To describe how health care crisis resulting from the COVID-19 pandemic in South Korea has led to innovation and changes to government policy. This paper presents the significant cluster events, relevant developments of innovation, and economical impact in Korea that could inform policy makers on how to respond to health crises in the future. Methods: Health care, economy, epidemiological data are collected from various sources including the Korea Centers for Disease Control and Prevention (KCDC) or other government sources. Results: The KCDC jointly with medical professionals developed a series of innovations such as 1) Full contact tracing and rapid testing with a 12 h turnaround and 10 min movement tracking systems, 2) transparent disclosure of all contract tracing data to the public through a central database, 3) Drive-Through and Walk-Through testing methods, and 4) a 4 tier patient severity index and community treatment isolation centers. Korea moved from the 4th in the world for total confirmed cases in March down to 76th in August. Conclusions: Expedited enforcement of amended legislation acts to protect the healthcare workforce resulted in only 10 healthcare professionals contracting the virus while caring for Covid-19 patients. This has resulted in minimal human capital loss and the government was able to re-direct existing medical workforce to areas in need. The quarantine strategies implemented resulted in little need to lock down the whole economy but also limited the cost spent to gain a year of life to 193,848 Won (US$163).

Using data on carbon emissions reported by Australian companies from 2009 to 2015, we examine the effect of carbon emissions on firm value. We investigate how the introduction of an Australian emissions pricing scheme, the Clean Energy Bill, affects this relationship. Results show that the level of direct emissions is negatively associated with a firm's market value. The negative effect becomes stronger during the period when the Clean Energy Bill became effective. When firms are separated according to whether they provide voluntary carbon information in addition to their mandatory disclosures, negative effects of direct emissions are found in the group with low disclosure scores and in the group with poor carbon management performance. Overall, the results indicate that the market penalizes firms based on their direct carbon emissions and that this penalty is imposed only on firms that have low disclosure scores or poor carbon management performance. JEL Classification: M48, G32

This paper examines whether CEO stock-based compensation has an effect on the market's ability to predict future earnings. When stock-based compensation motivates managers to share their private information with shareholders, it will expedite the pricing of future earnings in current stock prices. In contrast, when equity-compensated managers attempt to temporarily manipulate the stock price to maximize their own benefit rather than that of shareholders, the market may not fully anticipate future performance. We find that a CEO's stock-based compensation strengthens the association between current returns and future earnings, indicating that more information about future earnings is reflected in current stock prices. In addition, we find that the positive effect is weaker for firms that have a high level of signed discretionary accruals or a low management forecast frequency. Overall, our study suggests that on average, equity-based compensation improves the informativeness of stock prices about future earnings, while opportunistic discretionary accruals or lowered earnings guidance hamper this improvement.