Although it's affected us all, the effects of the pandemic have been anything but equitable. Research underlines this time and again. We hear talk of learning the pandemic's hard lessons, of building back better, of grasping the opportunity for change offered by the new perspectives forced on us by crisis. Adopting a new way of working is, of course, one such opportunity. A four-day working week could be key to tackling that inequality, which has no place in modern society and which has been so clearly revealed by the pandemic, that of gender inequality.