| 2023 | |
| 24 April | Issuance of Department Order No. 23-45: Approval of PAB Accreditation Scheme for Management System Certification Bodies Operating Certification of Occupational Health and Safety Management System (OHSMS) Basesd on ISO 45001:2018 and Guidelines for its implementation. |
| 2021 | |
| 04 January | Issuance of Department Order No. 21-01: Approval of PAB’s Accreditation Schemes on Greenhouse Gas (GHG) Verification/Validation bodies (Sub-scope: Carbon Offsetting and Reduction Scheme for International Aviation – CORSIA), and ISO/IEC 17043 (Conformity Assessment – General Requirements for Proficiency Testing). |
| 01 October | Retained full membership to APAC MRA for the scopes of testing and calibration based on ISO/IEC 17025, quality management system (ISO 9001), environmental management system (ISO 14001), and food safety management system (ISO 22000) certification based on ISO/IEC 17021-1, and granted extension of signatory status for product certification based on ISO/IEC 17065. |
| 2019 | |
| 27 February | Retained full membership to APAC MRA for the scopes of testing and calibration based on ISO/IEC 17025 and granted extension of signatory status for medical testing based on ISO 15189 and inspection body based on ISO/IEC 17020. |
| 21 February | By Virtue of Department Order No. 19-18 s.2018 issued by DTI Secretary Ramon M. Lopez, Philippine Accreditation Bureau (PAB) was transferred to the supervision of the Undersecretary for Competitiveness and Innovation Group (CIG). |
| 2017 | |
| 06 December | Granted full membership to International Halal Accreditation Forum (IHAF) |
| 29 March | By Virtue of Department Order No. 17-35 s.2017 issued by DTI Secretary Ramon M. Lopez, Philippine Accreditation Bureau (PAB) was transferred to the supervision of the Undersecretary for Industry Development and Trade Policy Group (IDTPG). |
| 2016 | |
| 09 June | Launch of Accreditation program for ISMS and EnMS Certification. |
| 2015 | |
| 10 December | Launch of PAB as a Bureau. |
| 2014 | |
| 02 June | Adoption and Implementation for the DTI Rationalization Plan in view with the Approval by DBM of DTI’s Rationalization Plan. |
| 2013 | |
| 17 October | Creating of Philippine Accreditation Bureau (PAB) under the Office of the Undersecretary for Consumer Protection Group (CPG) formerly Consumer Welfare and Trade Regulation Group of the Department of Trade and Industry. This is the result of approval by the Department of Budget and Management (DBM) of DTI’s Rationalization Plan (Pursuant to Executive Order no. 366 dated 04 October 2004). |
| 2011 | |
| 10-17 September | PAB hosted the 17th Asia Pacific Laboratory Accreditation Cooperation (APLAC) General Assembly and Technical Meetings. |
| 11-18 June | PAB hosted the 18th Plenary Meeting of the Pacific Accreditation Cooperation (PAC). |
| 2009 | |
| 18 May | Issuance of Executive Order no. 802 pursuan to Section 13 of Republic Act 9236 also known as “The National Metrology Act of 2003” Which strengthned and recognized the Philippine Accreditation Office (PAO) as the national accreditation body, the centra body to accredit inspection, testing and certifying bodies and other bodies offering conformity assessment services. |
| 2007 | |
| 26 October | Granted full membership to IAF MLA for Management System Certification (ISO/IEC 17021) in the scope of EMS (ISO 14001). |
| 12 July | Granted full membership to PAC MLA for Management System Certification (ISO/IEC 17021) in the scope of EMS (ISO 14001). |
| 2006 | |
| 11 April | Transfer of the accreditaiton functions from the Bureau of Product Standards to the Office of the Undersecretary of the Consumer Welfare and Trade Regulation Group making the Philppine Accreditation Office a full-pledge office in view of the issuance Department Administrative Order 04 by the former DTI Secretary Peter B. Favilla. |
| 2005 | |
| 17 November | Granted full membership to ILAC MRA for testing and Calibration (ISO/IEC 17025); former name as Bureau of Product Standards Laboratory Accreditation Scheme (BPSLAS). |
| 16 November | Granted full membership to APLAC MRA for Testing and Calibration (ISO/IEC 17025); former name as Bureau of Product Standards Laboratory Accreditation Scheme (BPSLAS). |
| 2002 | |
| 22 September | Granted full membership to IAF MLA for Management System Certification (ISO/IECC) 17021 in the scope of QMS (ISO:9001); former namd as Bureau of PRoduct Standards Accredtation Scheme (BAS). |
| 07 August | Granted full membership to PAC MLA for Management System Certification (ISO/IEC 17021) in the scope of QMS (ISO:9001); former name as Bureau of Product Standards Accreditation Scheme (BAS). |
| 1995 | Accreditation Schemes for Conformity Assessment Bodies (CABs) was handled by the Bureau of Product Standars (BPS) of the Department of Trade and Industry (DTI). |
