José Hermínio Diaz Guevara has been working in the informal economy since he was ten years old, particularly as a street vendor. He joined the organization FESTIVES when he was 17 years old as Youth Secretary. He stayed in that position for a long period. He then became Finance Secretary and is now the General Secretary of the organization. He has been a part of several associations of informal economy workers and he is a member of the StreetNet International Council at the international level.