- 1921
International Convention for the Suppression of the Traffic in Women and Children, adopted on 30 December 1921, 9 LNTS 415
- 1926
Slavery, Servitude, Forced Labour and Similar Institutions and Practices Convention of 1926 (Slavery Convention of 1926), in force 9 March 1927, 60 LNTS 253
- 1930
International Labour Organization, ILO Forced Labour Convention, 1930 (No. 29), 28 June 1930
- 1934
International Convention for the Suppression of the Traffic in Women of Full Age, Geneva, 11 October 1933, in force 24 August 1934, 150 LNTS 431
- 1949
International Convention for the Suppression of the Traffic in Persons and the Exploitation of the Prostitution of Others, 2 December 1949, in force on 25 July 1951, 96 UNTS 271
- 1956
UN Economic and Social Council (ECOSOC), Supplementary Convention on the Abolition of Slavery, the Slave Trade, and Institutions and Practices Similar to Slavery, 7 September 1956
- 1957
International Labour Organization (ILO), Abolition of Forced Labour Convention, C105, 25 June 1957
- 1975
International Labour Organization, Migrant Workers (Supplementary Provisions) Convention, 1975 (No. 143)
- 1993
UN General Assembly, Vienna Declaration and Programme of Action, 12 July 1993, A/CONF.157/23
- 1998
International Labour Organization, ILO Declaration on Fundamental Principles and Rights at Work, June 1988
- 2000
UN General Assembly, United Nations Convention against Transnational Organized Crime: Resolution, adopted by the General Assembly, 8 January 2001, A/RES/55/25
UN General Assembly, Protocol to Prevent, Suppress and Punish Trafficking in Persons, Especially Women and Children, Supplementing the United Nations Convention against
Transnational Organized Crime, 15 November 2000, A/RES/55/25
UN General Assembly, Protocol against the Smuggling of Migrants by Land, Sea and Air, Supplementing the United Nations Convention against Transnational Organized Crime, 15 November
- 2007
Human Rights Council, Resolution 6/14, Special Rapporteur on Contemporary Forms of Slavery, 28 September 2007, https://ap.ohchr.org/documents/E/HRC/resolutions/A_HRC_RES_6_14.pdf
- 2014
International Labour Organization, Protocol of 2014 to the Forced Labour Convention, 1930 (no. 29)