The National Child Labour Survey 2013 estimated that Bangladesh is home to 3.45 million working children, including 1.28 million engaged in hazardous labour. Low commitment from the Ministry of Labour and Employment to tackling hazardous child labour in hidden and informal workplaces pushes the worst forms of child labour (WFCL) into informal, unregulated domains. Making visible hidden and overlooked children who are working on the margins associated with extended supply chains and identifying solutions in these informal spaces is a priority. The CLARISSA consortium, led by the Institute of Development Studies (IDS), UK with the Terre des Hommes Foundation (Tdh), ChildHope UK (CH) and the Consortium for Street Children (CSC) is working with its southern partners and global corporations. The CLARISSA consortium aims to identify hidden and overlooked children and to surface key drivers of modern slavery and WFCL to develop interventions to counteract them through participatory processes.