Han var professor i London fra 1920. Fra 1922 satt han i ledelsen for Fabian Society. Han tilhørte venstresiden i den britiske arbeiderbevegelsen. Han ble formann i Fabian Society og for Labour 1945–46.
Bibliografi
Studies in the Problem of Sovereignty (1917)
Authority in the Modern State (1919)
Political Thought in England from Locke to Bentham (1920)
Karl Marx (1921)
A Grammar of Politics (1925)
Communism (1927)
Liberty in the Modern State (1930)
The Dangers of Obedience and Other Essays (1930)
An Introduction to Politics (1931)
Democracy in Crisis (1933)
The State in Theory and Practice (1935)
The Rise of Liberalism (1936)
The American Presidency (1940)
Reflections On the Revolution of our Time (1943)
Faith, Reason, and Civilisation (1944)
The American Democracy (1948)
The Rise of European Liberalism
Referanser
12Encyclopædia Britannica Online, oppført som Harold Joseph Laski, Encyclopædia Britannica Online-ID biography/Harold-Joseph-Laski, besøkt 9. oktober 2017[Hentet fra Wikidata]