1987 Constitution of the Philippines
Section 14.
No person shall be held to answer for a criminal offense without due process of law.
In all criminal prosecutions, the accused shall be presumed innocent until the contrary is proved, and shall enjoy the right to be heard by himself and counsel, to be informed of the nature and cause of the accusation against him, to have a speedy, impartial, and public trial, to meet the witnesses face to face, and to have compulsory process to secure the attendance of witnesses and the production of evidence in his behalf. However, after arraignment, trial may proceed notwithstanding the absence of the accused: Provided, that he has been duly notified and his failure to appear is unjustifiable.