This paper is part of a research interested in the way in which EU norms vary concerning their binding nature and the enforcement mechanisms that ensure compliance with them under the continuum that goes from hard to soft law. EU policy combines hard and soft law instruments and their proportion varies among policy areas and over time. What is the proportion of soft law in different policy sectors and what does that imply for EU law on a multilevel policy framework? This paper addresses these questions through the presentation of a new data set: EfSoLaw. Complementary to previous databases created on EU hard law (e.g. EUDIFF, EvoEU) and to qualitative comparisons of EU soft law across policy fields (e.g. SoLaR), this data set reunites for the first time scattered data on legal acts from various sources (EUR-Lex, DGs and EU agencies archives) proposing an organised and refined coding of the evolution of EU soft law acts (e.g. recommendations, resolutions, guidelines, notices…) in seven different policy sectors over a fifteen years span (2004-2019). The policy sectors cover different patterns in the relationship between EU policy-making and the nature of interests generated by the policy problems. The data set is composed of more than 16000 acts of hard and soft law in the policy sectors of state aid policy, pharmaceutical regulation, food security regulation, common foreign and security policy, financial regulation, sustainable agriculture policy, and police and judicial cooperation. The paper presents the main tendencies in the data set concerning the ratio of hard to soft law, the actors involved in soft law elaboration, the function of soft law (steering, procedural or explanatory) and its relationship to hard law. All these variables will be compared over time and for each policy sector, giving a valuable base to study further aspects of EU multilevel policy activity. Legislative, judicial and policy scholars can use this data set in the study of European and national policy processes involving the adoption, implementation and enforcement of EU Law.