In this paper, we argue that ¯ring decisions of ¯rms can help ex- plain the shape of the wage distribution. To emphasize this result, we consider a matching model with both idiosyncratic productivity shocks that hit jobs and heterogeneity of workers according to ex ante unob- servable abilities. Computation experiments show that the model can generate a hump-shaped wage distribution despite assuming a uniform distribution of shocks and a Pareto distribution of abilities.