To Work within the region, you have to have a work allow (Autorização de Trabalho) in the Ministry of Labor. To get it, you must be sponsored by an employer right before entering the place. The whole process of using the services of non-Brazilians is usually a pretty complicated task; https://medley-web.com/userinfo.php?mod=space&userinfo=frank.kirk_451691&name=Your_Account&op=userinfo