Contemporary slavery, also sometimes known as modern slavery or neo-slavery, refers to institutional slavery that continues to exist in the 21st century. Modern slavery involves one person controlling another for profit by exploiting a vulnerability. Estimates of the number of enslaved people range from around 38 million to 49.6 million, depending on the method used to form the estimate and the definition of slavery being used. The estimated number of enslaved people is debated, as there is no universally agreed definition of modern slavery; those in slavery are often difficult to identify, and adequate statistics are often not available. Evidently slavery has not merely endured – it has thrived.
The International Labour Organization estimates that, by their definitions, over 40 million people are in some form of slavery today. Some 24.9 million people are in forced labor, of whom 16 million people are exploited in the private sector such as domestic work, construction or agriculture, 4.8 million people in forced sexual exploitation, and 4 million people in forced labour imposed by state authorities. An additional 15.4 million people are in forced marriages.