Is a missionary of the Scalabrinian Congregation (Missionaries of San Charles Borromeo) since 1991. After concluding his studies in the Pontifical Gregorian University in Rome (PhD in History), he was assigned to different missionary activities. He was counselor of the INCAMI (Episcopal Commission for Migrations of Chile) in Santiago de Chile, from 1995 to 1997, and Director of the Migration Department of the Archdioceses of Buenos Aires (Argentina) from 1997 to 2002. Fabio worked as researcher in the Center for Latin-American Migration Studies (CEMLA), in Buenos Aires, from 1998 to 2002. He taught as extraordinary professor at the Faculty of Social Sciences in the Universidad del Salvador, in Buenos Aires, from 1999 to 2000, and in the Institute of Theology of Sao Paulo - ITESP (Brazil), from 2000 to 2001. At this moment, he is Extraordinary Professor at the “Pontificia Universitas Urbaniana” in Roma, Italy; Professor at the Mayhill School of Theology (SMT) in Manila, Philippines; Director of the Scalabrini Migration Center (SMC) in Manila, Philippines; Editor of the Asian Pacific Migration Journal (APMJ) and Asian Migration News (AMN); Vice-President of the Philippines Migrant Rights Watch (PMRW) and Area Representative for Asia-Pacific of the Scalabrini Migration Network (SMN).