This paper estimates the workplace productivity effects of COVID-19 by studying performance of soccer players after an
infection. We construct a dataset that encompasses all traceable infections in the elite leagues of Germany and Italy. Relying on a staggered difference-in-differences design, we identify negative short- and longer-run performance effects. Relative to their preinfection outcomes, infected players’ performance temporarily drops by more than 6%.Over half a year later, it is still around 5% lower.