Moral identity, a construct that captures how individuals view themselves relative to moral attributes, has received widespread attention in the organizational sciences. This article builds on the existing moral identity literature by examining the mechanisms and boundary conditions of leader moral identity's impact on the punishment of misconduct. Drawing on multiple literatures, we specifically argue that leader moral identity is positively related to the punishment of misconduct under the condition of higher cognitive load. Furthermore, we identify moral anger as a key mechanism. The theorized model was tested across three studies: a study of civil judges' court rulings (Study 1), a study of managers' tendencies to punish their employees' misconduct (Study 2), and an experiment that manipulated cognitive load while testing the intermediary role of moral anger (Study 3). Results offered convergent support for our model, shedding new light on the impact of moral identity on leaders in the workplace. Implications for theory and practice are discussed. (PsycInfo Database Record (c) 2023 APA, all rights reserved).