Conditions at labor camps vary widely depending on the operators.
105 of the United Nations International Labour Organization (ILO), adopted internationally on 27 June 1957, intended to abolish camps of forced labor.
[1] In the 20th century, a new category of labor camps developed for the imprisonment of millions of people who were not criminals per se, but political opponents (real or imagined) and various so-called undesirables under communist and fascist regimes.
Early-modern states could exploit convicts by combining prison and useful work in manning their galleys.
[2] This became the sentence of many Christian captives in the Ottoman Empire[3] and of Calvinists (Huguenots) in pre-Revolutionary France.