Join ICA Thank you for your interest to join ICA! ICA has two types of memberships: Full membership and Associate Membership. Full members receive full rights to participate in the council’s work and events. Please, review full list of membership benefits. Associate members would normally be a national or international body such as OECD (The Organisation for Economic Co-operation and Development), EU (European Union), or an International NGO (Non-Government Organisation). They are given access to the ICA conference and online information resources. Associates have no voting rights on the Board or Council.