We have not been able to find any official information about this, but emigration for low-skilled jobs is not common. In times of Brazilian financial crises, there is a small proportion of women who emigrate to other countries to work as informal care workers (legally or illegally) (IEA USP, 2017). Regarding within country migration, this may happen generally from poorest regions (northeast and north) towards the richest ones (southeast). We do not believe this has had an impact on the availability of informal care workers in Brazil.

References:

IEA USP. (2017). Fenômeno da migração também tem relação com idosos—IEA USP. http://www.iea.usp.br/noticias/fenomeno-da-migracao-tambem-tem-relacao-com-idosos