As Southeast Asia's largest country, Indonesia is multicultural, which shapes how people interact, communicate, and resolve conflicts. In construction projects, this diversity creates complex communication dynamics, where differences in speaking style, politeness level, and how people convey disagreements can trigger misunderstandings. This study aims to examine the role of interpersonal communication skills in preventing construction dispute escalation. Using a descriptive qualitative approach, the study collected data through interviews with professionals involved in various construction project dispute cases. The results show that conflicts in construction projects stem not only from technical or contractual issues but also from miscommunication, differing perceptions, and incompatible communication styles. Factors such as intonation, nonverbal expressions, hierarchical barriers, and insensitivity to cultural context are the main triggers for conflict escalation. The findings also show that interpersonal communication skills, including the ability to actively listen, convey messages clearly, and adjust communication styles, play a significant role in maintaining harmony and preventing conflicts from developing into formal disputes. The results of this study help strengthen the humanistic perspective on resolving construction conflicts in a multicultural work environment. This study opens up opportunities for further studies, especially related to the influence of cross-generational communication in construction projects
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