When it comes to modern slavery, human trafficking and child labor — the targets of Sustainable Development Goal №8.7 — measurement is easier said than done.

A new report, Global Estimates of Modern Slavery: Forced Labour and Forced Marriage, produced by Walk Free and the International Labor Organization, aims fill some of the gap in data.

The results are shocking. It finds that about 40.3 million people are victims of modern slavery, which can include debt bondage, serfdom, forced marriage and exploitation of children. That amounts to 5.4 people out of every 1,000 in 2016.

The report calls for stronger social protections, extending labor rights in the informal economy, addressing the root causes of debt bondage, improving migration governance, and improved victim identification.

Read the full article by Adrienne Day about modern slavery from ImpactAlpha