After studying Economics at the University of Amsterdam, Aad Koster was employed at the
Netherlands Institute for Working Conditions (now a division of TNO, the Dutch Organisation for
Applied Scientific Research). From 1990 till 1994, he worked as policy advisor at the former Dutch
Care Federation and was associated, among other issues, with collective bargaining. Later he
joined the National Association for Home Care (later named Z-org), where he held the position of
manager Employer’s Affairs, later becoming an assistant director, moving to become the CEO of
Z-org. Koster was CEO of ActiZ, organization of entrepreneurs in elderly care from 2008 until
2015. Koster held also the position of town councilor between 1993-2002. During this period he
replaced the alderman for Care and Welfare for almost 18 months. He has also been
boardmember for several sports organizations.
From January 2016 Koster has several activities as an entrepeneur, advisor and member of
Supervisory Boards of care-organizations. He is also president of the Dutch Association of
Supervisors in Care and Social services.
He was several years president of EAHSA and after the merge with EDE, he is now vice-president
of the European Ageing Network (EAN). Koster represents EAN in the executive board of Social
Services Europe (SSE) and is president of SSE.