Communities European Institute of Public Administration (EIPA) European Public Administration Network (EUPAN) European Social Insurance Platform (ESIP) Géant International Social Security Association (ISSA) Intigrity for researchers Socieux+ Education F – École nationale supérieure de Sécurité sociale (EN3S) In-house consultancy D – PD E – Isdefe I – Formez PA NL – TNO Ghent declaration on the challenges and common actions for European public administrations