This brief analyses how countries can achieve more effective, timely and sustainable responses to the COVID-19 crisis by taking into account regulatory barriers and compliance issues. Drawing upon previous work on administrative barriers and procedures as well as regulatory enforcement and inspections, the brief identifies several key regulatory aspects of the COVID-19 crisis response. These include: 1) facilitating the supply and availability of essential goods for crisis response, 2) reconciling privacy concerns with effectiveness for tracing and/or "track-and-trace" approaches, and 3) fostering and maintaining compliance with mitigation measures through targeted, proportionate enforcement and transparent communication. This brief discusses simplification and removal of disproportionate or non-risk-based barriers, as well as the importance of ensuring effective regulation of major risks, and achieving sustained compliance with key safety measures.