Japan has accepted nurses from Indonesia, the Philippines, and Vietnam under the Economic Partnership Agreement, but nearly half of them have already left the workforce. This study aimed to clarify the factors related to the job continuance of nurses who migrated to Japan under the Economic Partnership Agreement. Our goal was to explore factors specific to migrant nurses and to contribute to the development of support measures for them. This research was a cross-sectional study in which a web-based questionnaire and interview were conducted at a single point in time. Migrant nurses (n = 40) participated in the web-based questionnaire survey. Of those, nine nurses were also interviewed. Spearman’s rank correlation coefficient was used to establish correlations, and qualitative descriptive analysis was used to analyse interviews. The questionnaire survey results revealed the content of work, human relationships in the workplace, the number of night shifts, and satisfaction with the balance between work and private life were significantly and negatively correlated with the Intention to Quit scale total score. All correlation coefficients were less than 0.5, indicating weak correlations. Three categories emerged from the interviews as positive factors related to job continuance: “generous support from the workplace”, “beneficial nursing experience in Japan”, and “determination to live in Japan”. A good working environment, generous support from the supervisor and colleagues, high values of nursing in Japan, and desire to migrate to Japan were the factors that had a positive effect on migrant nurses’ job continuance in Japan. Understanding the characteristics of migrant nurses and providing generous support will enable them to continue working in Japan. This study was not registered.

Background/Objectives: The employment of migrant nurses requires structured support from local nursing staff. However, multiple challenges persist in facilitating effective collaboration. We aimed to clarify the efforts made by Japanese nurses and identify their support needs when working alongside migrant nurses in Japan. Methods: We adopted a qualitative descriptive design. Eighteen Japanese nurses with experience working alongside migrant nurses were recruited through hospitals employing migrant nurses. Semistructured interviews were conducted, and data were analyzed using qualitative descriptive analysis. We classified the codes derived from the participants’ narratives and inductively generated categories. Results: Japanese nurses’ efforts in working alongside migrant nurses were classified into five categories: “Overcoming language barriers,” “Respecting the nursing practices and cultural backgrounds of migrant nurses,” “Encouraging migrant nurses to gain self-confidence,” “Engaging Japanese staff in establishing support systems for migrant nurses,” and “Addressing the personal challenges faced by migrant nurses working abroad.” Three categories of support needs were identified: “Learning about nursing practices and cultural backgrounds of migrant nurses,” “Information exchange on how to support migrant nurses,” and “Support systems for enhancing migrant nurses’ competencies in Japan.” Conclusions: Japanese nurses demonstrated active efforts to address differences in language, culture, and nursing practices, while collaboratively establishing support systems involving other staff members. They also extended support to aspects of migrant nurses’ personal lives. However, additional institutional and external support is required. Structured opportunities should be developed to enhance their understanding of migrant nurses’ backgrounds, alongside continuing education initiatives to support migrant nurses’ integration into the Japanese healthcare system.