For serious misconduct to justify dismissal, the following requisites must be present: (a) it must be serious; (b) it must relate to the performance of the employee's duties; and (c) it must show that the employee has become unfit to continue working for the employer.
Installation of shunting wires is without doubt a serious wrong as it demonstrates an act that is willful or deliberate, pursued solely to wrongfully obtain electric power through unlawful means. The act clearly relates to the petitioner's performance of his duties given his position as branch field representative who is equipped with knowledge on meter operations, and who has the duty to test electric meters and handle customers' violations of contract. Instead of protecting the company’s interest, the petitioner himself used his knowledge to illegally obtain electric power from Meralco. His involvement in this incident deems him no longer fit to continue performing his functions for respondent-company VsG.R. No. 190436. January 16, 2011).