Abstract Migrant workers sustain essential industries such as the food supply chain, construction, and domestic and care work. They tend to perform onerous and risk-laden tasks at low pay without employment or health protections, and often under exploitative terms (e.g., debt bonding, piecework). Current evidence on associations between migration, employment terms and conditions, and health indicates profound inequities in work-related health outcomes for migrant workers. Although the COVID-19 pandemic highlighted these disparities and their potential social and public health implications, migrant workers continue to be overlooked by public health scholars and policymakers. Supranational regulations (such as EU directives) and national policies rarely consider migrants in their role as workers, and little research is dedicated to questions at the intersection of migration, employment, and health. The invisibility of migrant workers is also a matter of disciplinary and sectoral silos, with different aspects of migrant labour regulated separately by Ministries of Immigration, Labour, Agriculture, Health, and others. These silos create incompatible, context-contingent definitions, terminologies, and administrative categorizations, leading to inconsistent data collection and data gaps which, in turn, translate into policy blind spots. Data that are comparable across contexts and that refer to migration, employment/work and health are generally scarce. For some sectors and contexts, virtually no data exist; e.g., for migrant workers in agriculture, construction, and domestic work, and for migrant workers in low- and middle-income countries. There is barely any evidence about interventions to improve the structures that dictate migrant workers’ employment conditions or obligations of employers. Given the limited participatory research with migrant workers, we have a very poor understanding of their views and viable intervention options, and migrant workers’ voices thus also remain absent from policymaking. This workshop aims to contribute to greater visibility of - and ultimately action on - migrant labour exploitation in research and policy. To this end, it will map current challenges and shortcomings in generating evidence on the links between migration, work/employment, and health; and it will suggest ways to improve research and interventions to address migrant workers’ health, based on the speakers’ experience in developing intervention-focused evidence in different contexts. The workshop will conclude with an open discussion to identify further relevant questions and elaborate steps towards better research and greater protections for mobile worker populations. Key messages • Harm from exploitative working conditions among migrant workers is substantial, yet data collection methods and intervention designs are limited. • For public health research to effectively help protect the health and rights of migrant workers, it is essential to share methods and insights across disciplines to drive research for action.