Background: The addition of chemicals to Annexes A, B or C of the Stockholm Convention triggers the need for most parties to review and update the national implementation plans (NIPs) in accordance with decision SC-1/12. In 2009, nine new chemicals were added to the Annexes of the Convention and in 2011, endosulfan was added to Annex A of the Convention. The process of reviewing and updating the NIPs can be challenging for parties that lack adequate resources and technical capacity. Parties have expressed the need for assistance in that regard and in particular in addressing newly listed POPs that are widely used for industrial purposes and are contained in products and articles. A set of guidance documents has been developed to assist parties in reviewing and updating their NIPs with information related to newly listed POPs. These documents should assist parties in developing strategies to restrict and eliminate the newly listed POPs by providing guidance on establishing inventories, controlling the import of new POPs, monitoring the presence of products and articles containing new POPs, selecting best available techniques and best environmental practices for the management of new POPs.While updating their NIPs, parties should also evaluate effectiveness of the action plans and strategies included in the original NIP. Review of the adopted strategies and measures to reduce or eliminate releases of Annex C POPs will require parties to elaborate updated release inventories in order to evaluate whether the unintentional releases actually decreased. Working language: English