Political liberals very often appeal to a so-called division of moral labour that separates the regulation of institutions from that of personal conduct. Probably the most famous statement of this idea is found in these remarks from John Rawls:

Kok-Chor Tan's excellent new book renews and extends the case for accepting some version of Rawls's view, which Tan calls the ‘institutional focus’ in distributive justice. If Tan is right, then the liberal focus on institutions is not only defensible in its own right, but also helps support further elements of egalitarian theorizing, including some that Rawlsians often reject. In particular, Tan believes that a focus on institutions helps secure a more plausible ‘luck egalitarian’ approach to distributive justice, and that it also supports a version of cosmopolitanism about global justice.