Do star employees help or hinder department performance: the case of surgeons in South Korean hospitals

Based on strategic human capital theory, this study examines the effects of star surgeons on two different types of healthcare outcomes (i.e., number of surgical patients and length of patients’ in-hospital stay after surgery) in the surgery department. We also explore whether the relationship between star surgeons and healthcare outcomes is contingent on the expertise disparity between star and non-star surgeons. The results of an empirical analysis on colorectal cancer surgeons in 80 departments in South Korean hospitals show that the number of star surgeons increases the number of surgical patients and reduces the length of patients' stay after surgery. Moreover, the positive relationship between star surgeons and the number of surgical patients is strengthened when the expertise disparity between star and non-star surgeons is low. The implications of these findings for research and practice are also discussed.