Practice Areas

  • Labor and Employment Law
  • Corporate Law
  • Civil Litigation

Admission to the Bar

  • Admitted to the Bar in 1978


  • Ateneo Law School, 1977

Mr. Rolando Mario G. Villonco is a General Partner and the Chairman of the Siguion Reyna MOntecillo and Ongsiako Law Offices. He spearheads the Labor Department of the firm. Under his careful watch, the firm’s solid reputation in labor practice has flourished. He has, through the years, successfully steered many of the biggest companies in the Philippines – such as PLDT, San Miguel Corporation, Philippine Airlines, RCBC, Atlas Consolidated Mining Corporation – in successfully negotiating and concluding Collective Bargaining Agreements with their employees. His counsel is much sought-after in dealing with, and satisfactorily resolving, myriad employer-employee issues, including strikes and union-related problems, and other controversies constituting the aftermath of local and international mergers and acquisitions, spin-off projects, outsourcing arrangements, redundancy, streamlining initiatives and other major personnel actions undertaken by management with actual and potentially serious implications in corporate operations and finances. Mr. Villonco’s other practice areas are in corporate law, and in corporate and civil litigation; one of his earlier cases concerned the successful conversion of shares in one of the oldest clubs in the country, Manila Polo Club, from non-proprietary to proprietary.

Mr. Villonco was born in 1951, schooled in Ateneo de Manila University where he also received his law degree, and admitted to the Bar in 1978. He was a member of the Board of Directors and Corporate Secretary of the Pasig, Makati, and Mandaluyong Chapter of the Integrated Bar of the Philippine from 1983-1985. He is currently an officer and director of Siemens, ETSI Technologies, Inc., Rothelma, and Rothelma Aquatic Resources.