The Minas Gerais State Association of Prostitutes worked with government-run bank Caixa on an agreement that would recognize sex workers as small business owners, providing them with the means to accept debit and credit card payments and making them eligible for previously unavailable social insurance programs (the article is in Portuguese, so the following excerpt is courtesy of Google Translate :)).
Formalizing the profession will allow prostitutes also have social security coverage, and access to retirement age and disability, sick pay, maternity pay, death benefits and aid-seclusion.
Exciting! But, I suspect there may be an ulterior motive. The Minas Gerais State Association of Prostitutes received attention a few months ago for offering free English classes to sex workers in anticipation of the 2014 World Cup to help them facilitate transactions with travelers in town for the ball game and the ball game *waggles eyebrows*. Enabling prostitutes to accept credit/debit cards will help Brazil ensure they can squeeze maximal tourist dollars from fans looking to get a little (or a lot of) bang for their buck.
Either way, increasing access to social benefits for citizens working legally is a good thing. Viva Brazil!