The mobile library service at UPT Perpustakaan Proklamator Bung Karno has shifted its focus from reaching public facilities to primarily serving schools. This transformation raises critical questions about how leadership influences policy implementation and how such orientation affects service inclusivity and public access. This study aims to analyze the role of leadership in shaping and implementing mobile library policies under institutional and resource constraints. A qualitative case study approach was employed to explore leadership orientation, internal communication, and implementer initiative. Data were collected through semi-structured interviews, direct observations, and documentation, and analyzed using Miles, Huberman, and Saldaña’s interactive model. The findings reveal that leadership orientation strongly determines policy direction, emphasizing efficiency, measurable targets, and ease of coordination with schools, while inadvertently limiting inclusive outreach to wider community groups. Nevertheless, librarians’ field initiatives sustain inclusive values through adaptive scheduling and collaborative teamwork. Theoretically, this research contributes to policy implementation studies by highlighting the mediating role of leadership orientation and the emotional engagement of implementers in achieving policy outcomes within resource-limited public institutions. Practically, the study recommends integrating social inclusion principles into performance-based policy frameworks and strengthening leader–staff communication to enhance sustainability, responsiveness, and the public value of mobile library services.
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