He is a trustee of the Foundation for a Sustainable Society, Inc. (FSSI), Caucus of Development NGO Networks (CODE-NGO), Partnership for Development Assistance in the Philippines (PDAP) and a member of the Multi-Sectoral Advisory Board of the Philippine National Volunteer Service Coordinating Agency (PNVSCA). Oman has been with social development work for more than 25 years. He has a BS Computer Science degree and MA units on Industrial- Organizational Psychology from Ateneo de Manila University.