Rapid organizational changes due to technological advancements, high-efficiency expectations, and uncertainties, particularly in healthcare, have led to a global stress epidemic among em-ployees. This has been exacerbated by the COVID-19 pandemic and evolving workplace practices. Surface acting, or the suppression and faking of emotions, significantly contributes to this stress and burnout, impacting not only individual healthcare professionals but also healthcare systems' overall effectiveness and sustainability. Providing adequate resources in high-demand work environments is, thus, essential to mitigate these negative experiences. Leader-member exchange (LMX) can play a pivotal role in understanding and addressing the needs and expectations of healthcare professionals. Drawing on Conservation of Resources (COR), Job Demands-Resources (JD-R), Social Exchange theories, and Grandey's Emotional Regulation Model, this study analyzed data from a convenience sample of 350 healthcare professionals. The results reveal that surface acting intensifies healthcare professionals' experiences of job stress and emotional exhaustion. Notably, the study empirically demonstrated that high levels of LMX in healthcare professionals' relationships with their leaders can mitigate the impact of surface acting on job stress and emotional exhaustion. These findings offer valuable insights for managers and policymakers, highlighting the importance of LMX in maintaining sustainable management practices in complex and stressful healthcare organizations.