Background: The mental health of nurses in psychiatric settings is profoundly influenced by specific work environment factors, including the health profession's culture, excessive workload, and workplace violence (Ugwu, 2020; Neves, 2021). This study explores the impact of workload, bullying, and support mechanisms, uniquely focusing on their effects within mental health nursing. Objective: To identify and analyze how distinct environmental stressors such as workload, role ambiguity, and lack of support affect mental health outcomes among nurses in psychiatric care facilities, aiming to propose targeted interventions. Methods: Employing a mixed-methods approach, the study surveyed 382 mental health nurses using both quantitative Likert-scale questionnaires and qualitative interviews. The methodology, supported by the postpositivist paradigm, was selected for its appropriateness in addressing the complex dynamics of psychiatric nursing settings (Ugwu, 2020). Results: The study found that high workload, frequent exposure to workplace bullying, and insufficient support systems are critical stressors significantly compromising mental health nurses' well-being and job satisfaction. Particularly, nurses with less than two years of experience in mental health settings were most vulnerable to these negative impacts. Conclusion: Addressing these key environmental factors is crucial for improving mental health nurses' working conditions and, consequently, the quality of care provided in psychiatric settings. The study suggests implementing structured support systems and policy reforms aimed at reducing workplace stressors
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