Along with the continuous improvement of communication technology, using work-related technologies to communicate during non‐work time has become a common phenomenon in numerous working areas which is called work‐related use of information and communication technologies after hours (W_ICTs). However, the underneath reasons of W_ICTs and what are its potential consequences are worth exploring and investigating. Based on conservation of resources theory, this study discusses the relationship between impression management motivation and emotional exhaustion with the mediating role of voluntary W_ICTs as well as the moderating mechanism of leadership feedback. Through analyzing 442 sample data collected via questionnaires, this research concludes: (1)Impression management motivation is negatively related to employee emotional exhaustion and positively affects voluntary W_ICTs; (2)Voluntary W_ICTs works as the mediator between impression management motivation and emotional exhaustion; (3)Leadership feedback positively moderates the relationship between voluntary W_ICTs and emotional exhaustion. The higher the leadership feedback is, the stronger the negative relationship between voluntary W_ICTs and emotional exhaustion is. This research provides a new sight into the antecedents of W_ICTs and contributes to a further understanding of its potential impacts. The findings of this research suggest how organizations should promote the employees to conduct voluntarily W_ICTs to achieve maximum benefits for the whole organization.