The objective of this paper is to examine the impact of perceived Authentic Leadership style on employees’ positive emotions during organizational change, considering Trust in the leader as a mediating variable. This research is quantitative in nature and data was collected from employees of a telecom organization in Pakistan through structured questionnaire. Out of 288 questionnaires distributed among employees in organization’s offices in three different cities, 214 filled questionnaires were received. Structural Equation Modeling (SEM) based on Partial Least Square (PLS) was applied for testing hypotheses of the research. The results show that authentic leadership has statistically significant impact on the positive emotions of employees during an organizational change, with partial mediation of Trust in the leader. This article provides the empirical evidence of the importance of authentic leadership in shaping employees’ emotions during organizational change process. These findings are helpful for organizations undergoing change management process. This research is one of rare studies carried out to empirically test the impact of authentic leadership style on employees’ emotions in telecom sector especially in South Asian countries including Pakistan.