About Mainline

Mainline's mission is to promote health and fulfil the human rights of people who use drugs:

without a primary focus on the reduction of drug use and with respect for the individual drug user's freedom of choice and capabilities.


All of Mainline’s activities are carried out in the interests of harm reduction.

Harm reduction offers people the chance to control their use of drugs and take back their own lives within realistic boundaries.

Harm reduction thus restores human dignity and increases quality of life for people who use drugs.

Core values

The experiences and motivations of people who use drugs and the contexts in which drug use takes place constitute the point of departure for Mainline’s actions. Furthermore, Mainline works on the basis of the following norms and values:

• Non-moralising
• Evidence-based
• People-centred
• Authentic - creative and free-thinking
• Pragmatic - we get to work
• Activist


  1. Offering and implementing harm reduction interventions

  2. Promoting the human rights of people who use drugs

  3. Supporting and promoting harm reduction as a method and as a broad mindset

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Developments, trends in the area of drug use and health. Stay informed about our projects and training courses abroad.


More about us

More about our objectives & our reasons to be



Bob Hoogenboom


Jantien Manders


Monique Middelhoff

Board member

Gerard Schippers

Board member

Wim Buisman

Board member


Machteld Busz


Guido van Diepen

Technical Advisor

Nick Veldwijk

Technical Advisor

Muna Handulle

Technical Advisor

Rafaela de Quadros Rigoni


Simon Williams

Harm Reduction Skills and Development Expert


Tim Jansma

Team leader/ editor in chief

Sara Woods

policy officer

Toon Broeks

Field worker and editor

Annet Vogelaar

Fieldworker and editor

Ingrid Bakker

Chemsex team

Leon Knoops

Chemsex team

Sjef Pelsser

Chemsex team - Online fieldwork

Ferry Barendregt


Eline Klomp


Marjolein de Man



Herman Kalter

Financial manager

Desiree van Dok

Office manager


Gerjo Kok

Professor of Applied Psychology

Wim van den Brink

Professor of Psychiatry and Addiction


There are currently no vacancies available.

Annual reports

Annual reports

Curious what Mainline has been up to in recent years? You can find all our annual reports on this page.

Read our Annual report 2019

This is our most recent annual report.

Also interested in finance? You can find our recent audit reports here:

Mainline fits the Dutch requirements for 'the Wet Normering Topinkomens (WNT)'. This law prevents non-profit organisations from paying excessive salaries to management. Details can be found in our audit reports. A correction was made and accepted for the 2016 report.

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