English: As the Chair of the Senate Committee on Labor in the 17th and 18th Congresses, Villanueva led an inquiry into the presence of 1,500 illegal POGO workers in Clark, Pampanga.
Filipino: Bilang chairperson ng Senate Committee on Labor sa 17th at 18th Congresses, pinangunahan ni Villanueva ang pagdinig sa paglaganap ng 1,000 illegal POGO workers sa Clark, Pampanga.