He then played a considerable part in the setting up of ordinances founding and organising social security.
President of the national social security budged, he was a member of and presided over the "Commission d'Étude des problèmes de la Vieillesse", which in January 1962 published the celebrated "Rapport Laroque".
In August 1964, he was finally named President of the Social Section of the Conseil d'État, which he exercised until his retirement in 1980.
A long-time holder of the chair in social law at the Institut d'Études Politiques de Paris, he taught generations of civil servants and unionists and published his memoirs: Au service de l'Homme et du Droit.
For Pierre Laroque, "each class forms a relatively closed group: The passage of one to another, while not impossible, is difficult".