This study aims to analyze the organizational communication model in strengthening organic solidarity in the South Solok Bukittinggi Student Association (IMA SOLSEL BKT). This research is motivated by the importance of organizational communication in creating harmonious relationships amidst the diversity of roles and responsibilities of members of regional student organizations. The novelty of this research lies in the study of organizational communication models associated with the concept of organic solidarity in regional-based student organizations, which is still relatively rarely researched. The study applies a qualitative descriptive approach through data collection techniques from participatory observation, in-depth interviews, and documentation. Research informants include administrators and members of IMA SOLSEL BKT for the 2024–2025 period. These findings show that this communication model is participatory, transparent, and based on family values. Horizontal communication can increase member trust and participation, while flexible vertical communication supports effective coordination. In addition, the use of digital media also strengthens the intensity of communication and organic solidarity among organizational members.
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