Bretton Woods Law - Lee Marler
Bretton Woods Law - Jazz Omari
Bretton Woods Law - Antje Kunst
Bretton Woods Law - Joseph Oppenheimer

Jazz Omari

Bretton Woods Law - Jazz Omari

An invaluable asset to the investigative team…I also was impressed with the clarity of her analysis of the several legal issues that arose.

W. Michael Kramer, Regent Emeritus of the ACFE


Jazz Omari (



Barrister (Direct Access accredited)



  • Multilateral Development Bank (MDB/IFI) sanctions cases
  • Assessment and design of Integrity Compliance Programmes
  • Employment Disputes within International Organisations

International Anti-Corruption Investigation

Having conducted a busy Court practice in the UK both prosecuting and defending in criminal cases, Jazz has steadily built an international anti-corruption practice.  She is currently part of the Bretton Woods team assisting companies and individuals facing allegations of sanctionable practices on MDB-financed contracts.

She has not only acted in contested cases but also has extensive experience in assisting parties fulfill their obligations under Negotiated Resolution and Settlement Agreements, such as undertaking internal investigations, assessing the adequacy of integrity compliance programmes vis-a-vis international best practice and designing and implementing improved ones.  Jazz has appeared in contested hearings before the World Bank Group Sanctions Board, representing a company and also company directors accused of sanctionable practices.  She has further been part of a team of nominated investigators instructed to undertake internal investigations required under the terms of conditional debarments and voluntary disclosure and cooperation agreements with the World Bank, Asian Development Bank and African Development Bank.

Jazz has also acted as a nominated Integrity Compliance Programme consultant pursuant to a Negotiated Settlement between her client and the African Development Bank.  She was responsible for evaluating the company’s internal Integrity Compliance Programme against the Bank’s own ICP Guidelines and international best practice, such as BS10500 and guidance from Transparency International, the United Nations Office of Drugs and Crime and the International Chamber of Commerce.  She then undertook the wholesale redesign of the Company’s ICP, drafting new policies and manuals for the Company concerning, inter alia, risk assessment, due diligence, code of ethics, procedures for the detection, reporting and investigation of allegations of sanctionable practices, whistleblower policies, and guidance for staff relating to the recognition of procurement red flags.

She is also available to undertake ad hoc internal investigations into staff misconduct within companies and international organisations where an external independent investigator is required.  Previous assignments include examining allegations of bribery and cartel operation by staff members at a Geneva-based United Nations organisation and acting as an independent external investigator for an Africa-based international organisation to investigate allegations of serious staff misconduct involving grave breaches of confidentiality and identify the perpetrators.

International Administrative Law

Jazz has extensive experience advising and representing international organisations, individual staff members and Staff Associations.  Her work includes pre-action negotiations, litigation at first instance and appellate level, mediation and advisory work concerning whether internal policies, such as harassment policies and staff disciplinary procedures, are compliant with international administrative law, human rights law and international best practice.

Cases for both staff and organisations include litigation brought by the President of a Staff Association for the purpose of obtaining locus standi for the Staff Association and redressing the organisation’s contempt of an order from its own Grievance Committee; unlawful redundancy; termination following substandard performance; failure to exceptionally extend contracts in organisations with a cap on the duration of service; appeals against performance appraisals; and numerous complaints of bullying and harassment.  She has also acted as an advocate to make oral representations on behalf of a Judge at an ad hoc recusal hearing before an independently constituted appeals panel at an international organisation, successfully resisting an application for recusal from an appeal case relating to a staff employment dispute.

Clients include staff and staff associations at the Inter-American Development Bank, the Commonwealth Foundation, the European Bank for Reconstruction and Development, the World Bank, the European Centre for Medium-Range Weather Forecasts, the Pan-American Health Organisation and the International Maritime Organisation.   Although her approach is meticulous and robust, she is sensitive to the needs of clients and has extensive experience in representing vulnerable individuals.

Jazz also advises the Comprehensive Nuclear-Test Ban Treaty Organisation on employment disputes, including representation before the ILOAT.  She has represented the Commonwealth Secretariat in employment disputes before the Commonwealth Secretariat Arbitral Tribunal, and has advised the organisation on general contract matters, with particular consideration for the impact of the organisation’s immunities on its contractual relations with suppliers.

Jazz has also represented staff members in mediation, where the parties in a dispute have elected to employ alternative means of conflict resolution to successfully conclude the matter without embarking upon litigation.



Jazz is included in the list of approved arbitrators for staff employment disputes at the King Abdullah bin Abdulaziz International Centre for Interreligious and Intercultural Dialogue (KAICIID).


Jazz has long held an interest in international and comparative law, having studied both English law and French law.  Prior to being called to the Bar of England and Wales in 2006, Jazz worked at a law firm in Paris for a year assisting with translation and drafting in matters of civil law.  She has also handled a variety of civil litigation matters in the UK, representing High Street lenders in debt recovery, bankruptcy and repossession proceedings in the County Courts.  Following pupillage, Jazz practised as a self-employed barrister across the South Eastern circuit, specialising in crime and undertaking both defence and prosecution cases.

Jazz thoroughly enjoys academic lecturing, and frequently participates in seminars offered by Bretton Woods Law on international administrative law.  In November 2015 she presented ‘Should an appeal mechanism be introduced against rulings by the courts of International Financial Institutions?’ at La Sapienza University in Rome at the Round Table organised by the Committee of Staff Representatives of the Co-ordinated Organisations (‘CRP’). The Round Table, which addressed the theme of the right of appeal in the context of international administrative law, received a Medal of the Presidency of the Italian Republic.  She has also been a guest lecturer for the British Studies Program, organised by the University of Southern Mississippi, and at City University, London on the MA Legal Translation course.

She has undertaken the International Military Course on the Law of Armed Conflict at the International Institute of Humanitarian Law in San Remo, which concentrates on the applicability of the Hague and Geneva Conventions and customary international law in times of internal and international armed conflict.

Jazz also participated in the 6th Intensive Truth Commission Course hosted by the International Center for Transitional Justice (ICTJ), which focused on how Truth Commissions and other complementary mechanisms may be set up and deployed in order to bring justice to the victims of atrocities and human rights violations as a result of armed conflict or the actions of a political regime.


Qualifications and Courses

  • LLB (Hons.) English Law with French Law, King’s College, London
  • Maîtrise en droit, Université de Paris I (Panthéon-Sorbonne)
  • Associate of King’s College, London
  • BPP London, Bar Vocational Course (Very Competent)
  • 153rd International Military Course on the Law of Armed Conflict, International Institute of Humanitarian Law, San Remo
  • 6th Intensive Course on Truth Commissions, International Center for Transitional Justice, Barcelona



  • French (fluent)
  • German (basic)
  • Japanese (beginner)
  • Arabic (beginner)



  • Middle Temple
  • Criminal Bar Association
  • South Eastern Circuit
  • Young Fraud Lawyers Association
  • Franco-British Lawyers Society

Jazz is accredited to accept work through the Direct Access scheme without the need for a solicitor.

Marler is an established expert in the rule of law and public international law generally. I have seen him at work over the years and he is impressive. A barrister with a quick mind, an eloquent tongue and a talent with a pen, as well as having a keen sense of humour. I selected him to be my General Counsel at EQ-G for a reason.

General Sir David Richards GCB CBE DSO (former UK CDS and now Lord Richards of Hertsmonceux)

Lawyers in private practice with talent and expertise in resolving MDB sanctions cases are few and far between, but Lee Marler is one of them. He has proven himself time and again to be knowledgeable and highly effective. He is also a fine advocate and draftsman, and this is why I instruct him – where necessary – to assist IACD in its efforts to curb corruption on AfDB financed projects.

Anna Bossman, Director, AfDB’s Integrity and Anticorruption Department (“IACD”)

An unparalleled blend of legal expertise in the area of International Administrative Law and an understanding of the mindset and functioning of legal departments at international institutions.”

Zbigniew Kominek, Former Chair, EBRD Staff Council