Section 39Omnibus Election Code of the Philippines (Batas Pambansa Blg. 881), Sec. 39

Certificate of Candidacy. - No person shall be elected punong barangay or kagawad ng sangguniang barangay unless he files a sworn certificate of candidacy in triplicate on any day from the commencement of the election period but not later than the day before the beginning of the campaign period in a form to be prescribed by the Commission. The candidate shall state the barangay office for which he is a candidate.

The certificate of candidacy shall be filed with the secretary of the sangguniang barangay who shall have the ministerial duty to receive said certificate of candidacy and to immediately acknowledge receipt thereof.

In case the secretary refuses to receive the same, or in the case of his absence or non-availability, a candidate may file his certificate with the election registrar of the city or municipality concerned.

The secretary of the sangguniang barangay or the election registrar, as the case may be, shall prepare a consolidated list all the candidates and shall post said list in the barangay hall and in other conspicuous places in the barangay at least ten days before the election.

Any elective or appointive municipal, city, provincial or national official or employee, or those in the civil or military service, including those in government-owned or controlled corporations, shall be considered automatically resigned upon the filing of certificate of candidacy for a barangay office.