The present work deals with the theme of the immigrant worker, being approached from the Migration Law (Law 13.445/2017), which comes to replace the for-mer Foreigners’ Statute. In this context, the contours of Brazilian internal regulation on the possibility of the right to work of reputed lawful immigrants will be addressed. The study of the chosen theme is important in view of the humanitarian problem of global dimension regarding the migratory process. Its purpose is to investigate the adequacy of Brazilian legislation regarding the protection of the rights of migrant workers, con-sidering the country’s migratory reality and some of the main international norms on the subject. The research on screen took place from a qualitative analysis methodology, using the hypothetical-deductive approach methods of descriptive and analytical cha-racter, adopting bibliographical research technique. It is concluded that the fundamen-tal right to work comprises a human right that constitutes the subjective patrimony of immigrants, and must be implemented in Brazil in compliance with the constitutional precept of prohibition of non-discrimination, however, Law 13.445/17 was lacking of the protection of this right, which could have been broader.