The Administrative and Legal Office (ALO), as approved by the Office of the President and the Department of Budget and Management is composed of the General Services Division, Human Resources Development Division provides support to the Commission through delivery of key corporate services critical to the success of the organization in the area of human resource management, procurement, information technology, administration, and internal legal services

The Communications and Knowledge Management Office (CKMO) leads the advocacy efforts of the PCC to foster a culture of competition in the country. It identifies areas of concern for the PCC, formulates strategies, executes programs, and creates mechanisms to engage both its internal and external stakeholders. It collaborates with relevant business groups, consumer associations, and statutory bodies to enhance awareness and understanding of the Philippine Competition Act (PCA). The CKMO, through its Knowledge Management and Training Divisions, provides sustained support to improve the institutional and technical capacity of other PCC units.

The main function of the Competition Enforcement Office (CEO) of the Philippine Competition Commission (PCC) is the monitoring, prevention, detection, investigation, and prosecution of anti-competitive agreements or abuse of dominant position conduct that substantially restricts, prevents, or lessens competition, as generally provided under Sections 14 and 15 of the Philippine Competition Act (PCA). Included in the category of prohibited acts or conduct are per se anti-competitive agreements that restrict competition as to price (price-fixing and predatory pricing) and output, among others. To effectively carry out its enforcement function within the context of procedural fairness, the CEO utilizes technical experts, highly-trained investigators, and experienced litigators, while tapping synergies within the PCC, such as the Economics and the Mergers and Acquisitions Offices. The CEO likewise espouses Leniency and Whistleblower Programs as avenues for businesses and market stakeholders to self-police its ranks and report anti-competitive conduct. The CEO has two (2) divisions, the Monitoring and Investigation Division and the Litigation Division.

The Economics Office (EO) within the PCC is tasked to evaluate the impact of government policy on market competition and consumer welfare, and to provide economic analysis to support the detection and investigation of anti-competitive behavior. EO members are typically assigned to cases led by the Mergers and Acquisitions Office or the Competition Enforcement Office, and support the advocacy and knowledge management activities of the Commission. The EO is organized between the Policy and Markets Division, and the Economic Investigation Division.

The work of the FPMO centers on providing the Commission with effective and efficient advice and technical assistance on areas of budget and finance, plans and programs, management matters, and other functions, as may be provided by law. The FPMO is headed by a Director IV and supervises three divisions, namely (1) Budget Division, (2) Accounting Division, and (3) Corporate Planning and Management Division.

The Mergers and Acquisitions Office reviews, investigates and evaluates mergers and acquisitions which are likely to substantially prevent, restrict, or lessen competition in the relevant market or in the market for goods or services. It receives notifications of proposed mergers and acquisitions that reach the threshold under the Implementing Rules and Regulations of the Philippine Competition Act, as well as cases referred to it by the Commission for a motu proprio review. The Office, works together with the Economic Office to investigate whether mergers and acquisitions are likely to result in a substantial lessening of competition in the market. Should it find that a merger or acquisition is likely to reduce competition and harm consumers through higher prices, lower quality of goods or services, or stifle innovation, it will submit a recommendation to the Commission for the proposed transaction’s prohibition. The Office likewise develops guides for businesses on complying with antitrust laws through publication of Merger Guidelines, additional guidelines and clarificatory notes.