Members
| 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | |
| # members | 13 | 24 |
31 |
37 |
39 |
43 | 44 | 50 | 57 | 66 | 82 |
- ABInbev
- Accenture
- Ahlers
- Alpro
- Apco Worldwide
- Artoos
- AXA
- Baxter
- BECI
- Befimmo
- Belgacom
- BMA Ergonomics
- BNP Paribas Fortis
- Bosch
- bpost
- Care
- Cargill
- Cera
- CESI
- Citibank Belgium
- Coca-Cola Belgium-Luxembourg
- Cofely Services
- Cofinimmo
- Dalkia
- Danone
- Delhaize Group
- Deloitte
- Delta Lloyd Bank
- Delta Lloyd Life
- Dexia
- D'Ieteren
- Ecover Belgium
- EDF Luminus
- Electrabel
- Elia
- Ernst & Young
- Etex Group
- Freshfields
- GDF Suez
- Geseco
- GlaxoSmithKline Biologicals
- Groupe VLAN
- Gyproc
- Hay Group
- HeidelbergCement Benelux
- Infrabel
- ING
- Janssen Pharmaceutica
- Johnson & Johnson Europe
- KBC
- La Loterie Nationale
- Lampiris
- Linklaters
- Martin's Hotels
- Microsoft
- MIVB - STIB
- Mobistar
- Nestlé
- Novartis Pharma
- Nyrstar
- PricewaterhouseCoopers
- Randstad Belgium
- Reynaers Aluminium
- Ricoh
- Ronveaux
- Rosy Blue Group
- Sanofi Pasteur MSD
- SAP
- SD Worx
- Siemens
- Sodexo
- Solvay
- Spadel
- Still movin
- SWIFT
- TNT Express
- Total
- Tractebel Engineering
- UCB
- Umicore
- UWE
- Van Marcke
- VBO - FEB
- VO Group
- Voka Vlaams Economisch Verbond
