About
Collective Action at the Basel Institute on Governance
The Basel Institute has promoted Collective Action as an effective tool to prevent and combat corruption since its foundation in 2003

Based in Basel, Switzerland, our team offers practical, independent guidance on how to use Collective Action to promote fair competition and tackle corruption risks. We support companies, governments and civil society organisations worldwide
Our services and products include:
- The B20 Database of Initiatives, the world's largest repository of anti-corruption Collective Action initiatives.
- A Helpdesk providing free advice on anti-corruption Collective Action.
- A Mentoring Programme, offering hands-on support to organisations working with the private sector on corruption issues.
- Active facilitation of Collective Action initiatives to maximise effectiveness and avoid antitrust issues.
- Tailored advice on how to set up, structure and manage Collective Action initiatives most effectively.
- Practical help in setting up sustainable public-private dialogue mechanisms to advocate for policy reforms.
- Guidance and outreach to relevant partners through our network of contacts in the field.
- Housing The Wolfsberg Group Secretariat at the Basel Institute headquarters in Switzerland.
About this knowledge hub
The B20 Collective Action Hub is a global resource centre on anti-corruption Collective Action. It offers a range of anti-corruption publications and tools, plus a database of over 300 Collective Action initiatives and projects designed to raise standards of integrity and fair competition.
The B20 Hub was launched in 2013, following a mandate from the B20 group of business leaders for the Basel Institute to develop and maintain this hub in collaboration with our institutional partners. It has developed and expanded over the years thanks to support from our key donors and partners, in particular the Siemens Integrity Initiative.
All resources are freely accessible and a helpdesk function is available for users to ask specific questions.
We'd love to feature your Collective Action initiative in the B20 Database. If you'd like your initiative to be included, please complete this entry form and return it to Scarlet Wannenwetsch, Collective Action Senior Specialist, scarlet.wannenwetsch@baselgovernance.org.
It only takes a few minutes and will help practitioners, policymakers and researchers around the world learn from your experience. Thank you for helping us grow this community of practice!
Vanessa Hans is Director of the Private Sector team at the Basel Institute on Governance. She has held the position since July 2022, having first joined the Basel Institute in January 2020 as Private Sector Specialist.
In her role, she leads a team of compliance and Collective Action specialists, taking a dual approach to engaging and strengthening the private-sector response to corruption risks in business transactions: by advancing anti-corruption Collective Action, and through technical assistance to private corporations and state-owned enterprises.
She regularly advises organisations ranging from small and medium enterprises to multinationals, state-owned enterprises and international organisations on topics relating to governance, ethics and compliance. She also leads the Basel Institute’s work on synergies between corruption and business and human rights as well as in the humanitarian sector.
Vanessa is a Board member of the United Nations Global Compact Network Switzerland and Liechtenstein. She also is a member of the Advisory Group of the Anti-Corruption Initiative for Asia and the Pacific (ACI) of the Asian Development Bank (ADB) and Organisation for Economic Co-operation and Development (OECD) as well as the Anti-Corruption Leaders Hub of the OECD under the Global Initiative to Galvanize the Private Sector as Partners in Combatting Corruption and the UNCAC Working Group on Human Rights and Corruption. She is part of the Independent Sustainability Sounding Board of Argor-Heraeus, a Switzerland-based gold refiner.
Prior to joining the Institute, Vanessa was the Managing Director of the French Chamber of Commerce and Industry in the Philippines where she established the first network-wide code of conduct and was appointed Data Privacy Officer. She initiated multi-stakeholder C-level committees addressing challenges across: gender, youth, infrastructure, agribusiness, and market access. Under her leadership, the Chamber won the French public service delegation contract as the only trade agency in the country under Team France Export.
She previously worked at several non-profit organisations focusing on corporate social responsibility and international development strategies.
She holds a Bachelor of Business Administration with a minor in International Relations from HEC Montreal and a Master of Science in Corporate Social Responsibility from the Nottingham University Business School.
Vanessa is a competitive long-distance cyclist and a certified mountain bike instructor.
Scarlet Wannenwetsch
Head, Collective Action
+41 61 205 56 75 scarlet.wannenwetsch@baselgovernance.orgScarlet Wannenwetsch joined the Basel Institute in 2017 and is currently Head of Collective Action. In this role, she is responsible for leading, implementing and expanding the Institute’s Collective Action programme, ensuring its strategic integration across the organisation and advancing its conceptual development and uptake.
She also leads the Collective Action Mentoring Programme and the Institute’s Collective Action activities. These include project managing the implementation of the Siemens Integrity Initiative, as well as leading the Institute’s international policy work on Collective Action, with a particular focus on the Southern African region and ASEAN.
Scarlet also heads the Institute’s engagement with the Business 20 (B20) on corruption and served as Deputy Co-Chair of the Integrity and Compliance Task Force in 2021/22, having previously acted as a network and knowledge partner.
Between 2021 and 2024, she lectured on the Master's programme in Anti-Corruption Compliance and Collective Action at the International Anti-Corruption Academy.
Prior to joining the Institute, Scarlet gained experience at the International Chamber of Commerce (ICC Germany) and worked as a legal advisor for an international start-up.
She holds a law degree (LLB) from King's College London and an LLM in Public International Law and Alternative Dispute Resolution from the Free University of Berlin.
Lucie Jones (Binder)
Senior Specialist, Governance and Integrity / Acting Compliance Officer
+41 61 205 56 76 lucie.binder@baselgovernance.orgLucie Jones joined the Basel Institute on Governance as Senior Specialist, Governance and Integrity in September 2022. She has recently completed a multi-year project to strengthen the evidence base for anti-corruption Collective Action, delivering a new conceptual framework and practical tools that help practitioners, policymakers and researchers design more effective approaches to strengthening business integrity. She is currently acting Compliance Officer for the Basel Institute, overseeing integrity and compliance initiatives across the organisation.
At the Basel Institute, Lucie also bridges Collective Action, governance and integrity by leading and advising on compliance and governance mandates within the Private Sector team. Her expertise lies in governance and compliance systems, business integrity and strategy development, with a focus on developing risk-based approaches that support resilience and sustainable organisational performance.
Prior to joining the Basel Institute, Lucie was Chief of Staff and then Head of Governance & Strategy at Cochrane, the world’s leading evidence-based healthcare organisation. In that role, she delivered two organisational strategic plans and developed a monitoring & evaluation approach to assess organisational impact. She delivered one of the UK’s first fully virtual Annual General Meetings, and has extensive experience in corporate governance and in writing organisational policies.
Lucie holds a bachelor's and master’s degree in Anthropology from the University of Oxford and has certifications in leadership and risk management.
Dzhulieta Horbachenko joined the Basel Institute on Governance in February 2026 as Intern, International Conference. In this role, she supports stakeholder communications and conference preparations including conference materials for the 6th International Collective Action Conference.
Dzhulieta is a designer and communications specialist with experience in visual communication, digital outreach and event-related content production in international and non-profit contexts.
Before joining the Institute, she worked and volunteered with organisations such as Ukraїner and Power Hub Zug, contributing to communication materials, branding and event-related outreach.
Dzhulieta holds a Master of Arts in Design with a specialisation in Digital Ideation from the Lucerne University of Applied Sciences and Arts, and a Bachelor’s degree in Graphic Design from the Lviv National Academy of Arts. Her academic background includes coursework in interaction design, digital communication and emerging technologies.
The B20 Collective Action Hub is supported by the Siemens Integrity Initiative.










