This document reviews developments in the reform of the United Nations (UN) development system since the Governing Body’s last discussion of this topic at its 335th Session (March 2019). It is a revised and updated version of the document prepared for information for the 340th Session (November 2020) (GB.340/INS/6), which further takes into account the impact of the COVID-19 crisis. It assesses the implementation by the Office of previous Governing Body decisions, giving particular attention to work under the Office Plan of Action 2019–20 to maximize the opportunities of the UN development system reform for the ILO and tripartite constituents, which was endorsed by the Governing Body at its 335th Session. It highlights, inter alia, steps taken to facilitate the engagement of UN resident coordinators and UN country teams with ILO constituents at the country level in the formulation and implementation of the UN Sustainable Development Cooperation Frameworks, in particular in respect of the Sustainable Development Goals that are relevant to the ILO’s mandate. It also reviews the steps taken to ensure the linkages between Cooperation Frameworks and ILO Decent Work Country Programmes. Experiences with the new resident coordinator system to date are highlighted. The Governing Body is invited to take note of the current status of the reform and the implementation of the Office Plan of Action 2019–20, and to invite the Director-General to take its views into consideration in the continued engagement in and implementation of the reform (see the draft decision in paragraph 53).