In April 2019, I attended the SLSA conference at the University of Leeds. I presented my work on enforcement of social security law in the Netherlands called ‘Enforcement Styles at Social Security Agencies’. This empirical research is part of my PhD-thesis that I hope to defend this July at the University of Groningen. The title of my thesis is ‘Between the rules. A social-legal study of the enforcement of social security law’ (written in Dutch). I focus on the role of front-line officials who are involved in the enforcement of social security legislation. For this purpose, I have observed various employees in the course of their daily work. I have analyzed the implementation practice of social security legislation by using multiple perspectives. The perspective I describe in this blog classifies the behaviour of front line officials based on four different enforcement styles. In this blog, I will explain my research methodology and I will present a glimpse of my empirical findings regarding the enforcement styles of front line officials.