Thomas Piketty's Capital in the 21st Century did much to bring discussions of economic inequality into the intellectual and popular mainstream. This paper indicates how business, management and organization studies can productively engage with Cap21st. It does this by deriving practical consequences from Piketty's proposed division of intellectual labour in general and his account of 'supermanagers' in particular. There are organizational specificities to inequality which Piketty's framework does not address, however. Cap21st's account of corporate governance, of tax avoidance policy and of financialisation, in particular, requires significant conceptual and empirical supplementation. We argue that business, management and organisational scholars should contribute to the cross-disciplinary inequality research project which Cap21st proposes not despite these limitations but because of them.