This paper seeks to validate the implications for modern slavery and human trafficking in the post-pandemic scenario in Brazil, especially from sources produced by the main International Organizations operating in this field, such as the United Nations within the United Nations Office for Drugs and Crime (UNODC) and the International Labor Organization, as well as the developments and obstacles presented nationally. As a hypothesis, it is suggested that the consequences of the existing problems in Brazil—and aggravated by the pandemic—may be an obstacle to achieving the Sustainable Development Goal (SDG) 8 and, especially, target 8.7 by 2025. Aiming at reducing vulnerabilities and sustainable development of the economy, society and the environment, the SDGs are integrated, interdependent and indivisible and indicate a list of tasks to be fulfilled by all actors. The paper adopts the inductive method, and the materials used to reach the main conclusions come from primary and secondary sources, such as documents from the United Nations (UN) and its agencies, as well as the International Labor Organization (ILO), and specialized bibliography on modern slavery and human trafficking.