This review article explores the crucial role of occupational health nurses (OHNs) in promoting mental health in the workplace. With a growing recognition of the impact of work-related stressors on mental well-being, this paper discusses various strategies and interventions OHNs can employ to support mental health promotion. From proactive risk assessments to implementing stress management programs, OHNs play a pivotal role in creating psychologically safe work environments. This article synthesizes current literature and best practices, providing insights into the challenges and opportunities in mental health promotion within occupational health settings.