We represent the Government of the Republic of the Philippines and its branches, departments, instrumentalities, and Constitutional Commissions i.e. Commission on Election, Commission on Audit, Civil Service Commission, and the Office of the Ombudsman before the trial courts, the Court of Appeals, and the Supreme Court. We also give legal advise to the aforementioned bodies and its officials. In other words, the OSG is the "Law Firm of the Republic of the Philippines."We also handle land registration cases; annulment and declaration of nullity cases; adoption cases; criminal cases on appeal; and habeas corpus, amparo, and habeas data cases.

I conduct review lectures on Criminal Law, Special Penal Laws, Criminal Procedure, and Evidence to those who are preparing for the Criminology Licensure Examination.

I conduct review lectures on Fundamentals of Criminology, Psychology of Crimes, Philippine Criminal Justice System, Human Behavior and Crisis Management, Fundamentals of Criminal Investigation, Special Crime Investigation, Traffic Management and Accident Investigation, Organized Crime Investigation, and Firearms and Toolmarks Examination.

I taught Fundamentals of Criminal Investigation, Special Crime Investigation, and Firearms and Toolmarks Examination.

I managed the Forensic Laboratory of Lyceum of the Philippines University - College of Criminology.

I taught Civil Law Review and Alternative Dispute Resolution.