Researchers are examining the international harmonization of national qualification frameworks for long-term care workers, focusing on Japan, the Philippines, and Indonesia. Although Japan welcomes care workers from abroad, it remains unclear how best to identify their level within the Japanese qualification framework. Care workers in origin countries are also often confused about their professional rank in the receiving country. This project will clarify how the origin country estimates the competency of migrating workers using its national qualification framework, how Japan estimates the competency of invited workers, and how the origin country estimates the competency of care workers returning from Japan.