Workplace stress has emerged as a major concern in the modern corporate environment, where rapid technological change, intense competition, high performance expectations, and evolving job roles place significant pressure on employees. This study examines the influence of workplace stress on the psychological health of employees, with special reference to corporate working environments. It explores key stressors such as excessive workload, tight deadlines, role ambiguity, job insecurity, interpersonal conflicts, and challenges in maintaining work–life balance, and analyzes their impact on mental well-being, including anxiety, depression, emotional exhaustion, reduced motivation, and decreased job satisfaction. Using a combination of quantitative and qualitative methods, data were gathered from employees across different corporate sectors to assess the relationship between stress levels and psychological outcomes. The findings reveal a strong association between prolonged workplace stress and negative psychological health effects, emphasizing the need for effective organizational interventions. The study concludes that supportive leadership, stress management initiatives, flexible work practices, and a positive organizational culture are essential to protect employee mental health and ensure sustainable productivity and long-term success in the modern corporate era