As Mexico puts into place new policies and programs to address increased migration from the Northern Triangle countries, El Salvador, Guatemala, and Honduras, it is critical that policymakers take into account the rights and needs of migrant women working in Mexico. Women represent approximately half of the migrant population in Mexico, yet are often unable to acquire proper documentation or resources. Mexico’s recent migration law facilitates work visas and protects migrant and women’s rights, yet effective implementation falls short. This report examines the challenges faced by migrant women in three sectors – agriculture, domestic work, and sex work. The report concludes with recommendations for Mexico. This report is the first part of a two-part report series examining the migration of women from the Northern Triangle to Mexico.