The objectives of this study were to examine the relationships among high-commitment HR systems, organizational commitment, firm performance, and HR capability. In conducting this study, regression analysis was performed on data collected from 302 manufacturing firms. The major conclusions drawn from the findings of this study were as follows: Highcommitment HR systems have a strong relationship with organizational commitment, as well as firm performance; Use of high-commitment HR systems has an indirect effect on firm performance with a partial mediation effect on organizational commitment; HR capability does not have a significant effect on the relationship between high-commitment HR systems and firm performance.