Psychological detachment from work represents an important recovery process that allows individuals to mentally disengage from job-related thoughts, responsibilities, and stressors after working hours. In contemporary work environments, continuous connectivity and increased occupational demands may reduce employees’ ability to separate personal time from professional responsibilities. This difficulty in psychological disengagement may influence the restoration of personal resources required for effective self-regulation on the following day. The present Occupational Psychology Research Article examines the relationship between psychological detachment after work and next-day self-regulatory capacity. The study explores how the ability to mentally disconnect from work-related activities influences emotional control, attentional regulation, impulse management, and goal-directed behaviour. The proposed framework considers psychological detachment as a recovery mechanism that restores cognitive and emotional resources necessary for effective self-regulation. The research focuses on behavioural indicators including emotional regulation ability, concentration control, task persistence, and behavioural flexibility. The proposed analysis suggests that individuals experiencing stronger psychological detachment after work may demonstrate improved self-regulatory capacity due to reduced cognitive exhaustion and enhanced mental recovery. This study contributes to occupational psychology by integrating work recovery theory with self-regulation research. Understanding the relationship between after-work psychological detachment and next-day behavioural functioning may provide valuable insights for employee well-being, workplace productivity, and sustainable work practices.