Call for ILO External Collaboration Contract Terms of Reference Call for individual consultants
Reference: rfx_3971_HQ
Beneficiary countries or territories: Multiple destinations (see the Countries or territories tab)
Registration level: Basic
Published on: 16-Jan-2026
Deadline on: 23-Jan-2026 12:00 (GMT 1.00)
Description
Dear Bidder, The International Labour Office (ILO) is seeking an individual serving as an External Collaborator. Below is a summary of the work to be performed: The consultant, under the
supervision of a senior econometrician, will support the ILO’s work on the implementation and operationalisation of methodologies for producing global estimates of privately imposed
forced labour within the framework of the Global Estimates of Modern Slavery (GEMS). The assignment will focus on data preparation, integration, and statistical implementation of
estimation approaches across countries with differing data availability and missing-data structures. The consultant will contribute to the assessment, application, and documentation of
methodological approaches for combining multiple data sources, including household surveys, administrative data, forced labour surveys, and return-migrant surveys. Particular attention
will be given to analysing and addressing item and unit nonresponse, implementing imputation strategies, and integrating evidence from heterogeneous sources, including for countries with
limited or no microdata. The assignment will also involve close collaboration with the ILO team to produce national-level estimates for selected country typologies, test and compare
alternative estimation strategies for forms of exploitation that are poorly captured in household surveys, and document reproducible analytical workflows and code to support current and
future global estimation exercises. If you are interested, please express your interest and follow the instructions attached to consult the detailed terms of reference and other relevant
information available on the ILO e-sourcing platform. Please submit your proposal before the specified deadline. Thank you.