This paper analyzes the characteristics of migration process in Baja California Sur, on the Pacific Ocean coast of northwest Mexico, where immigration has impacted the local economy through the development of tourism and intensive agriculture that target foreign markets. This has encouraged an annual rate of population growth of 10% during the last decade, feeding into employment in both formal and informal sectors. Referring to the cases of women who develop beach vending activities and agricultural workers, this paper seeks to contribute to the understanding of how migration and the informal labor market intertwine.