The ban on slavery, slavery trade and forced labour is enshrined in Article 4 of the Universal Declaration of Human Rights.
Human Rights Committee (if the optional protocol is ratified by the state)
Special Rapporteur on trafficking in persons, especially in women and children
Special Rapporteur on the sale of children, child prostitution and child pornography
Special Rapporteur on the human rights of migrants
Special Rapporteur on the situation of human rights and fundamental freedoms of indigenous people
African Commission or Court on Human Rights and Peoples’ Rights