1987 Constitution of the Philippines
Section 13. The Office of the Ombudsman shall have the following powers, functions, and duties:
Investigate on its own, or on complaint by any person, any act or omission of any public official, employee, office or agency, when such act or omission appears to be illegal, unjust, improper, or inefficient.
Direct, upon complaint or at its own instance, any public official or employee of the Government, or any subdivision, agency or instrumentality thereof, as well as of any government-owned or controlled corporation with original charter, to perform and expedite any act or duty required by law, or to stop, prevent, and correct any abuse or impropriety in the performance of duties.
Direct the officer concerned to take appropriate action against a public official or employee at fault, and recommend his removal, suspension, demotion, fine, censure, or prosecution, and ensure compliance therewith.
Direct the officer concerned, in any appropriate case, and subject to such limitations as may be provided by law, to furnish it with copies of documents relating to contracts or transactions entered into by his office involving the disbursement or use of public funds or properties, and report any irregularity to the Commission on Audit for appropriate action.
Request any government agency for assistance and information necessary in the discharge of its responsibilities, and to examine, if necessary, pertinent records and documents.
Publicize matters covered by its investigation when circumstances so warrant and with due prudence.
Determine the causes of inefficiency, red tape, mismanagement, fraud, and corruption in the Government and make recommendations for their elimination and the observance of high standards of ethics and efficiency.
Promulgate its rules of procedure and exercise such other powers or perform such functions or duties as may be provided by law.