The LIEPP is based on four founding centers: the Centre d'Études Européennes; (CEE), the Department of Economics, the Centre for the Sociology of Organisations (CSO) and the Centre for Studies in Social Change (OSC).
 
The directors of these units are part of LIEPP's Scientific Council. Furthermore, the LIEPP is a partner of the audit firm KPMG and the consulting firm Euréval, in an evaluation project requested by the French National Assembly. In this context, LIEPP researchers regularly assess French public policies in three main areas: economic policy, taxation and sustainable development (batch 1); social policy, including employment, cultural and education dimensions (batch 2); sovereignty policies (administration of justice, security policies, foreign policies or dealing with issues of governance by the state, local governments, public institutions or other bodies of public service) (batch 3).    
 
As part of  batch 2, the LIEPP leads an ongoing study of family policies in Europe; study that is being conducted in partnership with the French Observatory of Economic Conditions under the direction of Hélène Périvier (OFCE).