- 2001/01 - 2001/03 De La Salle University Philippines Professor
- 2001 - 2001 :Professor, De La Salle University, Philippines
- 2001 - 2001 :Professor, De La Salle University, Philippines
- 1987 - 2000 :Associate Professor, Behavioral Sciences Department, De La Salle University, Philipipnes
- 1987 - 2000 :Associate Professor, Behavioral Sciences Department, De La Salle University, Philipipnes
- 1999 - 1999 :Visiting Associate Professor, Graduate School of Asia Pacific Studies, Waseda University, Tokyo, Japan
- 1999 - 1999 :Visiting Associate Professor, Graduate School of Asia Pacific Studies, Waseda University, Tokyo, Japan
- 1998 - 1998 :Consultant, Samal Island Tourism Estate Development Project, Sustainable Ecosystems Corp., Inc.
- 1998 - 1998 :Consultant, Samal Island Tourism Estate Development Project, Sustainable Ecosystems Corp., Inc.
- 1993 - 1996 :Dean, College of Liberal Arts, De La Salle University, Philippines
- 1993 - 1996 :Dean, College of Liberal Arts, De La Salle University, Philippines
- 1987 - 1996 :Consultant, Upland Development Working Group, Department of Environment and Natural Resources, Government of the Philippines
- 1987 - 1996 :Consultant, Upland Development Working Group, Department of Environment and Natural Resources, Government of the Philippines
- 1990 - 1995 :Consultant, Vitamin A Program Evaluation, Helen Keller International, Inc. (1990/11; 1993/06-08; 1995;01-03)
- 1990 - 1995 :Consultant, Vitamin A Program Evaluation, Helen Keller International, Inc. (1990/11; 1993/06-08; 1995;01-03)
- 1992 - 1993 :Consultant, Research Training Seminar-Workshop, Yunnan Upland Management Program,Ford Foundation, Kunming City, Yunnan Province, China (1992/07-08; 1993/09)
- 1992 - 1993 :Consultant, Research Training Seminar-Workshop, Yunnan Upland Management Program,Ford Foundation, Kunming City, Yunnan Province, China (1992/07-08; 1993/09)
- 1991 - 1993 :Executive Director, Social Development Research Center, De La Salle University, Philippines
- 1991 - 1993 :Executive Director, Social Development Research Center, De La Salle University, Philippines
- 1989/10 - 1992/09 Louis Berger International Inc. Consultant
- 1989 - 1992 :Consultant, Louis Berger International, Inc. (Projects: Fertilizer Survey; Makar Wharf Rehabilitation; Cagayan de Oro-Iligan City Corridor Industrial Master Plan; NRMP Policy Studies)
- 1989 - 1992 :Consultant, Louis Berger International, Inc. (Projects: Fertilizer Survey; Makar Wharf Rehabilitation; Cagayan de Oro-Iligan City Corridor Industrial Master Plan; NRMP Policy Studies)
- 1989 - 1991 :Consultant, Environmental Impact Assessment Review Committee, Environmental Management Bureau, Department of Environment and Natural Resources, Government of the Philippines
- 1989 - 1991 :Consultant, Environmental Impact Assessment Review Committee, Environmental Management Bureau, Department of Environment and Natural Resources, Government of the Philippines
- 1987 - 1991 :Executive Director, University Research Center, De La Salle University, Philippines
- 1987 - 1991 :Executive Director, University Research Center, De La Salle University, Philippines
- 1988/03 - 1988/12 U.S.Agency for International Development Social Soundness Analysis Consultant
- 1988 - 1988 :Consultant, Social Soundness Analysis, U.S.Agency for International Development
- 1988 - 1988 :Consultant, Social Soundness Analysis, U.S.Agency for International Development
- 1985/09 - 1987/06 Ohio State University USA Department of Anthropology Graduate Teaching Assistant
- 1985 - 1987 :Graduate Teaching Assistant, Department of Anthropology Ohio State University, USA
- 1985 - 1987 :Graduate Teaching Assistant, Department of Anthropology Ohio State University, USA
- 1980/06 - 1981/08 1977-1981:Assistant Professor and Chairman (1980/06-1981/08), Graduate Department of Social Sciences, De La Salle University, Philippines
- 1980/06 - 1981/08 1977-1981:Assistant Professor and Chairman (1980/06-1981/08), Graduate Department of Social Sciences, De La Salle University, Philippines
- 1979 - 1981 :Consultant, Project Monitoring and Evaluation, Project Development Division, Population Center Foundation,Manila, Philippines
- 1979 - 1981 :Consultant, Project Monitoring and Evaluation, Project Development Division, Population Center Foundation,Manila, Philippines
- 1978/06 - 1979/03 Philippines Department of Sociology-Anthropology Ateneo de Manila University Part-time Lecturer
- 1978 - 1979 :Part-time Lecturer, Ateneo de Manila University, Philippines Department of Sociology-Anthropology
- 1978 - 1979 :Part-time Lecturer, Ateneo de Manila University, Philippines Department of Sociology-Anthropology
- 1977 - 1979 :Consultant, Port-Gentil (Gabon) Redevelopment Project and Refugee Processing and Resettlement Project, Planning Resources and Operations Systems, Inc.
- 1977 - 1979 :Consultant, Port-Gentil (Gabon) Redevelopment Project and Refugee Processing and Resettlement Project, Planning Resources and Operations Systems, Inc.
- 1976/06 - 1977/05 1974-1977:Dean of Student Affairs (1976/06-1977/05) and Instructor, Ateneo de Naga College, Philippiines
- 1976/06 - 1977/05 1974-1977:Dean of Student Affairs (1976/06-1977/05) and Instructor, Ateneo de Naga College, Philippiines
- 1974/06 - 1977/05 Ateneo de Naga College Philippiines Dean of Student Affairs (1976/06-1977/05) and Instructor
- 1973 - 1977 :Deputy Director, Social Survey Research Unit, Bicol RiverBasin development Program, Ateneo de Naga College, Philippines
- 1973 - 1977 :Deputy Director, Social Survey Research Unit, Bicol RiverBasin development Program, Ateneo de Naga College, Philippines