Hard to see, harder to count: survey guidelines to estimate forced labour of adults and children (3rd edition)

This revised 3rd edition of the handbook provides an updated set of tools and guidelines for the design, implementation and analysis of quantitative surveys on the forced labor of adults. These guidelines present an operational definition of what constitutes forced labor and indicators with which to identify it, list the steps to be followed to implement a survey on forced labor, describe sampling techniques, propose a minimum set of questions necessary to assess forced labor, provide guidance on data analysis, and present some ethical considerations with regard to research on forced labor.