There is always a tension between a union’s bread-and-butter role to protect its members’ jobs and the wider role that some unions, at some times, have used to improve the world their workers live in. The emphasis on ‘interests at work’ is a rebuke to that wider social role, but it seems increasingly obsolete in the face of the existential threats of nuclear war and ecological breakdown. What about workers’ interests in breathing clean air? Or in affordable rents? Or in protection from floods, droughts and social breakdown? Or in the peace of mind that comes from knowing that the products of their labour have not been used in genocide?