We study the effect of deregulating weekday shop opening hours on employment in retailing. Using administrative data on all German food shops, a difference‐in‐differences analysis shows that relaxing restrictions on opening hours raised employment by 0.4 workers per shop corresponding to an increase by 4%. This effect is driven by part‐time employment and employment in large shops, and it implies an increase by 0.1 workers per additional actual weekly opening hour. While the wage bill increased by less than employment, the deregulation seems not to have reduced earnings of workers already employed in retailing before the deregulation. (JEL J23, L51, L81)