Mr. Panganiban's expansive presence can be felt through the various organizations he works with. He is a columnist for the Philippine Daily Inquirer, Chairman of the Philippine National Committee of the ASEAN Law Association, and member of the Permanent Court of Arbitration in The Hague, Netherlands.
From 1995-2006, he held various government posts including Associate Justice of the Supreme Court, Chairman of the Presidential Electoral Tribunal, Judicial and Bar Council, Philippine Judicial Academy, House of Representatives Electoral Tribunal and Member of the Senate Electoral Tribunal.
He also holds the following positions:
・Board of Advisers, Metrobank Foundation and Asian Institute of Management Ramon V. Del Rosario Sr.-C.V. Starr Center for Good Corporate Governance - Chairman
・Philippine Dispute Resolution Center - Chairman Emeritus
・Board of Advisers, Johann Strauss Society - Member
・Board of Trustees, Foundation for Liberty and Prosperity - Chairman
・Board of Trustees, Tan Yan Kee Foundation - Member
・Board of Trustees, Claudio Tehankee Foundation - Member