The Code of Ethics and Professional Responsibility (RA 6713) states:
Section 5. Duties of Public Officials and Employees. – In the performance of their duties, all public officials and employees are under obligation to:
(a) Act promptly on letters and requests. – All public officials and employees shall, within fifteen (15) working days from receipt thereof, respond to letters, telegrams or other means of communications sent by the public. The reply must contain the action taken on the request.