This study investigates the growing issue of nomophobia, characterized by the anxiety of being without a mobile phone, in the workplace. Utilizing the broaden-and-build theory, this research examines the impact of supportive leadership, co-worker support, Human Resource Management (HRM) practices, and affective commitment on reducing nomophobia among employees. Data were collected from 393 employees across various educational organizations. Structural Equation Modeling (SEM) was employed to test the proposed hypotheses. The findings reveal that supportive leadership significantly reduces nomophobia by enhancing HRM practices and affective commitment. However, contrary to expectations, co-worker support was found to increase nomophobia, suggesting that informal communication and social interactions via mobile devices might exacerbate smartphone dependency. HRM practices emerged as a critical factor in mitigating nomophobia, more so than affective commitment. This study contributes to the literature by highlighting the complex dynamics of workplace relationships and offering practical insights for organizations aiming to reduce nomophobia and improve employee well-being.