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A Vietnamese child born in Korea, developed pneumonia after a cold went untreated in time. He required hospitalization three to four times a year, incurring medical costs exceeding 10 million won. This was because his family, being undocumented migrants, lacked legal residency status and could not enroll in the national health insurance system. Consequently, even minor illnesses can escalate into life-threatening situations due to the difficulty of accessing proper care. Falling into a blind spot of the health insurance system, these families must shoulder the full cost of outpatient care, hospitalization, and rehabilitation, often leading to delayed treatment.
Like "A," undocumented migrant children are treated as if they do not exist—not only in healthcare but also in education, culture, and legal status.
According to the "2026 Youth Statistics" released on May 21 by the National Data Agency and the Ministry of Gender Equality and Family, there were 202,208 multicultural students in elementary and secondary schools as of 2025. However, these statistics cover only children from international marriages and foreign families currently enrolled in school; they exclude children whose births have not been officially recorded, such as those outside the school system and undocumented migrant children.
The reason for their exclusion is simply that the state lacks an accurate grasp of how many undocumented children are living in specific regions. As a result, they are often labeled with terms like "children who exist yet do not" or "shadows."
The First Step to Guaranteeing Rights for Migrant Children: "Discovering" Them.
It is not impossible to rescue migrant children from these welfare blind spots. The starting point for guaranteeing their basic rights is acknowledging their existence. Potential measures include official verification systems or a national birth registration system. On August 27, the Constitutional Court ruled that the National Assembly’s failure to enact legislation regarding a universal birth registration system was unconstitutional. In its ruling, the Court stated, “The ‘right to have one’s birth registered’ immediately upon birth cannot be guaranteed differently based on whether a child is a national or a foreigner.” It further explained, “Considering that children cannot choose their place of birth, country, or parents, the official recording of a child’s existence by the state with jurisdiction over the place of birth—immediately after the child is born—serves as a minimum safeguard for the child as a human being.”
Some local governments have already implemented such alternatives. Gyeonggi Province introduced an “Official Verification System for Unregistered Foreign Children” in February of this year. In collaboration with organizations such as the Migrant Pastoral Committee of the Archdiocese of Seoul and Save the Children, the province had issued 144 child verification certificates across 10 cities and counties by the end of June. While this system differs from formal birth registration—meaning it does not grant nationality or legal residency status—it provides a crucial starting point by administratively verifying the child's existence, enabling access to medical care, protection, and support systems.
However, this system is limited to Gyeonggi Province. Father Yoo Sang-hyuk (John the Baptist), head of the Migrant Pastoral Committee of the Archdiocese of Seoul, remarked, “While this demonstrates the potential of a model based on identifying, verifying, and connecting migrant children with services, it does not fully resolve regional disparities in rights or the gap in birth registration.”