While the on-call process depends on each team setup, the on-call pain is the same for everyone. To keep your systems healthy is to invest the same amount in keeping your team healthy. This is a mantra we, as a team, have been keeping each other accountable for. And we have learned that the best way to start addressing this is to first look at the data and then build healthy team habits to act upon it. This talk will walk you through a data-driven on-call framework, clearly derived from first principles. You will get the WHY, our journey towards adoption and the results after more than 2 years of implementation. If you are responsible for systems in production, then this is for you!