Michaëlle De Cock (Ph.D, University of Paris VI) has been a leading researcher for the ILO on methodologies to survey and estimate forced labour and trafficking of adults and children for the last 15 years. She has been actively involved in key global estimates published by the ILO: the first estimate of the worst forms of child labour in 2002 (which included trafficking and forced labour) and the two global estimates of forced labour in 2005 and 2012, resulting from a capture recapture of reported cases of forced labour. In 2017, she has co-led the production of the global estimates of child labour and modern slavery, including the forced labour component. For the last ten years, Michaëlle has been developing a series of national surveys on forced labour and trafficking of adults and children, leading to estimates published in national reports. The methodology used to produce these estimates was presented and discussed during an international workshop held in Kathmandu in December 2010 and the guidelines have since been published (Hard to see, harder to count: survey guidelines to estimate forced labour of adults and children, ILO, Geneva, 2011). She is currently co-leading the technical work of the expert working group set up by the 2013 International Conference of Labour Statisticians, with the aim of “discussing and developing international guidelines to harmonize concepts, elaborate statistical definitions, standard lists of criteria and survey tools on forced labour”.