The Union Civil Protection Mechanism (Decision No 1313/2013/EU) calls Participant States to develop risk assessments periodically and make the summary of those available to the European Commission, with the aim of promoting an effective and coherent approach to prevention of and preparedness for disasters. The different summaries reported have revealed how challenging it can be for Member States to develop National Risk Assessments (NRAs) due to the diversity of disaster risk management governances in place around Europe, the different level of information available about risk and the their past experiences in carrying out that exercise.The Report "Recommendations for National Risk Assessment for Disaster Risk Management in the EU" (version 0) attempts to answer the questions of "why" and "how" to do a risk assessment, paying special attention to how science can help in that exercise. The Report is the results of a collaborative effort of the Disaster Risk Management Knowledge Centre team (DRMKC) and nine expert groups from the Joint Research Centre (JRC) to cover various hazards and assets.This first version of the Report proved that science can already provide advice for risk in a single-hazard framework, in most of the cases. As one of the objectives of NRA is to find a common ground of understanding of the risk faced and their relative priority, the first step towards a multi-hazard assessment is actually harmonising and standardising the assessment as well as the risk metrics among different hazards. At the same time, better knowledge base of risk, availability of data and the development of risk analysis methodologies would facilitate the disaster risk managers to recognise the risk drivers that lead to risk and more effectively plan which capacities are needed.Version 1 of the mentioned Report is underdevelopment, trying to include other risk such as forest fires and cyber security risk.