20. The Organization will assess the accessibility of all buildings, goods and services related to WHO programmes and operations, including WHO conferences and events, offices and related infrastructure, information management and technology, communication, and procurement processes, implementing and monitoring actions to progressively and incrementally improve accessibility at all three levels of the Organization. The principles of Universal Design will guide actions to improve accessibility, where possible ensuring that products, environments, programmes and services can be used by all people, to the greatest extent possible, without adaptation or reconfiguration. Improving accessibility is the responsibility of respective offices and departments, who will be called upon to develop action plans which prioritize and resource the gaps identified, engaging organizations of persons with disabilities and host governments or ministries as appropriate. Progress on improving accessibility will be included in Director-General reports to the Executive Board and addresses to the WHA, in line with annual reporting on the UNDIS.