Migrants entering a new country also search for belonging. Through employment, migrants work in organizations and experience socialization in these new contexts. Thereby, organizations offer migrants a wide range of possibilities for identification and are thus places to regain a sense of belonging. We rely on prior research showing what migrants experience during the process of organizational socialization to organizational identification, more specifically through (a) sense-making which (b) provides self-esteem and self-enhancement, and (c) reduces uncertainty. Furthermore, we also investigate the interplay of various in-groups (multiple cultures) and levels (micro, meso, macro) that migrants identify with. Consequently, we follow a cross-level approach to identity in and beyond organizations and combine migration, organizational, and intercultural research. Based on a qualitative interview study in Germany, we highlight how positive organizational identification results not only in companies’ workforce retention but also in migrants’ increased societal identification. Moreover, we emphasize the important role German colleagues play in the socialization process across various levels. They serve as socialization agents being individual interaction partners and team members, but also representatives of professional cultures and of the German society. In sum, our research yields important theoretical and practical implications. We provide interesting avenues for future research to uncover the complex interrelationships in more detail, open up the black-box of organizational socialization, and rely on interdisciplinarity in a complementary way. Human Resources Management could consider identification as a multi-layered opportunity, recognize the potentials of migrants’ identification, and thus strive for the sustainable development of their competencies.