Between 1963 and 1977, approximately 8,000 Korean miners and 11,000 nurses were recruited to West Germany under bilateral government agreements, representing one of the earliest instances of state-organized labor migration from Asia to Europe. Shaped by Cold War geopolitics and postcolonial economic asymmetries, these workers faced linguistic isolation, demanding labor conditions, and cultural displacement, with the most significant developments emerging in the decades that followed This paper examines the Korean labor diaspora through two interconnected perspectives. First, it analyzes how Korean Protestant communities, pastors, and German-Korean ecumenical networks addressed the vulnerabilities of migrant workers while supporting democratic resistance in South Korea, particularly after the Gwangju Uprising of 1980. Second, it explores how migrants drew on faith traditions to interpret and resist experiences of displacement and marginalization. The paper argues that Korean migrant churches became crucial sites where religious practice, solidarity, and transnational political activism intersected. Drawing on oral history interviews and archival materials, the paper shows that these churches were not merely spaces of worship but also sites of identity formation and political mobilization. Working with German Protestant institutions, Korean pastors and theologians developed advocacy addressing labor conditions in Germany while amplifying international support for Korean democratization. This solidarity carried genuine political consequences. Theologically, the paper situates these developments within Korean contextual theology, particularly Minjung theology, arguing that the diaspora experience contributed a distinctive diasporic dimension to this tradition. It concludes that ethical frameworks for just migration governance remain incomplete without serious engagement with the theological voices and communal practices of migrants themselves.