Hafers was born in Santos, São Paulo, in 1935, and presided over the Brazilian Rural Society (SRB) in the period between 1996 and 2002.
Hafers worked as a broker and exporter of cotton in the family business between the 50s and 70s. From foreign trade, he expanded his activities to agriculture, planting coffee in Northern Paraná, first on leased land, and from 1962 onwards own land.
Still in the 1970s, it started forestry and expanded its business to the industrial sector, with the foundation of Pisa Papel de Imprensa S / A. He was president of the Paranaense Association of Coffee Growers (Apac) and founder of the managing institution of the Coffee Museum and the Museum of Immigration.