The influence of firm efficiency on agency credit ratings

This paper examines the relationship between relative efficiency and credit ratings using a sample of Korean listed firms and finds a positive relationship in the subsequent period after adjusting for absolute efficiency. The results suggest that credit rating agencies consider relative efficiency as a variable that influences a firm's ability to survive a business cycle. Interestingly, when we divide our samples into investment-grade and non-investment-grade firms, we find a different relationship. While we continue to find consistent results for the investment-grade group, we find a negative relationship between relative efficiency and credit ratings for non-investment-grade firms. We suggest "higher" levels of efficiency by non-investment-grade firms can be considered opportunistic or a form of distress, and potentially be the result of ineffective decision making . We conjecture that credit rating agencies have the ability to impose penalties of lower credit ratings on firms that engage in such behavior.