The benefits bill is frequently the subject of intense political debate. But since the pandemic, working-age health-related benefits have moved centre-stage in these discussions, as policy makers aim to understand what sits behind the historical rise in claims, and to contain future pressures too. In this briefing note – part of our Election 2024 work but also the first from a new Resolution Foundation research programme examining how disability, ill-health and the economy intersect – we investigate trends in working-age disability and incapacity benefits, asking what really sits behind the numbers that are understandably causing concern in Britain today.