In this paper, I describe the key aspects of my research on intercultural sensitivity, summarizing my own experiences and the key concepts that have underpinned the research, then discuss the general findings that emerged from it. The core purpose of the research has been to consider intercultural sensitivity and its impact on ethnocentric attitudes observed in the workplace among multicultural workers in Japan. The way in which diverse communicators employ different levels of intercultural sensitivity and how it impacts their attitudes among the interlocutors from different cultural and linguistic backgrounds has been explored. The findings suggest how such affective factors as intercultural sensitivity, empathy, open-mindedness, and nonjudgmental attitudes can help reduce the ethnocentric attitudes and power asymmetry among multicultural communicators in the workplace.