This study aimed to critically evaluate the effectiveness of casework intervention in addressing the interpersonal challenges encountered by de facto unsupported children. An in-depth analysis of casework practices revealed positive outcomes, with significant advancements observed in the children’s social interaction capabilities. Leveraging a psychosocial therapy framework, the intervention strategically provided emotional support and social skills development, crucial for bolstering self-esteem and improving communicative competences. The results of this study illuminate the substantial benefits of casework interventions, confirming their essential role in facilitating the holistic growth and interpersonal health of unsupported children.