SON Sokeng

Mr. Sokeng is a Managing Director and an Attorney at Law at Sithisak Law Office, a general practice firm and one of the major legal service providers in the Kingdom of Cambodia. He also gives lectures in field of Labor law, Business law, Special Contracts and Philosophy of Law at many prominent universities in Cambodia.

Professional Experience:

After graduating with high standing from Royal University of Law and Economics, Sokeng attended the Institute of Labor Studies of Lyon, Lumière Lyon 2 University in France. He was trained as labor law specialist by many reputable professors and lawyers in France and from other European Countries. Prior to joining Sithisak Law Office in 2013, he served as a legal trainee at Global Transitions in Paris, one of leading immigration firms in France, where he gained a wealth of practical knowledge and experiences helping progress his career as a Labor Law specialist. He has also worked with many eminent lawyers from Singapore at the Extraordinary Chambers in the Courts of Cambodia. He speaks Khmer, French and English.


– Institute of Labor Studies of Lyon, Lumière Lyon 2 University (Ph.D Student in Labor Law; Thesis: “International Mobility of Employees in ASEAN Member States”, Academic Advisor: MaitreConférence: Marie Cécile EscandesVaniol.)
– Institute of Labor Studies of Lyon, Lumière Lyon 2 University (Master 2 Research and Professional Labor Law, majoring in International Mobility of Employees) (2012)
– Institute of Labor Studies of Lyon, Lumière Lyon 2 University (Master 1 Private Law, majoring in Labor Law) (2011).
– Royal University of Law and Economics, Cambodia (Cambodia-France Dual Bachelor’s Degrees of Laws) (2010)

Firm Overview:

“SITHISAK” refers to strength of achieving supreme interest of justice. DEVARAJA, King of all divinities, makes journeys by a royal vehicle “NAGA”, which represents Khmer territory, to render divine justice to Humanity through his divine power.

SITHISAK is a General Practice Law Office in the Kingdom of Cambodia. It was created and began servicing its clients in 2010. Despite our recent inception, we have been gradually establishing ourselves ever since as a major legal service provider in the Kingdom with a clear vision for our future growth, earning trust from both local and foreign businesses and investors, as well as private individuals who seek our tax and legal assistance for their various matters, whether they are contentious or non-contentious ones, or business or non-business ones. We also have extensive experience assisting various ministries and governments agencies in dealing with many regulatory reform and development projects.

We are recognized for our practically-oriented tax and legal advice and our dedicated representation as well as for our culture of honesty and trustworthiness, professional ethics, and particularly collaboration since we believe that client’s success determines our own. To ensure both, “Partnering with our Clients” is a perfect expression of our approach in handling all the clients’ needs using our expertise, devotion, and best efforts.

Being fully committed to the above uncompromising values and integrity – as also pointed out through our firm’s adopted appellation – defines our efforts and determination to live up to the aspirations of the legal profession.

Dr. Darwin HEM (Naryth HEM)

Dr. Darwin HEM (Naryth HEM) is Principal Partner at BNG Legal. Darwin is admitted to practice law in Cambodia, a member of the Bar Association of the Kingdom of Cambodia (BAKC), an international associate member of the American Bar Association, a member of APAA (Asian Patent Attorneys Association), LAWASIA (The Law Association for Asia and the Pacific); a member of the Working Party on the Accession of Cambodia into the World Trade Organization. He is a licensed Trademark Agent in Cambodia. Also, Darwin sits as an arbitrator at the Cambodian Arbitration Council and is an advisory member for a number of important businesses and professional associations in Cambodia.

Dr. Darwin HEM (Naryth HEM) holds an LL.B from the Joint-Law Program of the University of San Francisco (USA) and Cambodia and a CAPA from the Bar Association of Cambodia. Darwin holds a State Doctor Degree in Medicine from the University of Health Science (Cambodia) and a MBA in Finance from Charles Sturt University (Australia). He studied economics in Australia and law in Lyon (France) under various scholarships. Darwin has a Diploma in Economic Law from the Royal School of Administration and a Diploma in Finance from Development Alternatives, Inc. (USA).

Prior to becoming an attorney, Darwin qualified as a medical doctor and worked as Chief Financial Controller for the Ministry of Economy & Finance in Cambodia. Before co-founding BNG Legal, he practiced law with a regional law firm which has a base in Cambodia for many years.

As an attorney and legal consultant, Darwin has worked on a wide variety of private projects for major national and international companies operating business in Cambodia, as well as for many public projects funded by the Asian Development Bank and the World Bank. Darwin specializes in real estate, corporate law, project finance and intellectual property. Darwin brings a deep understanding of contemporary Cambodian law and practice to BNG Legal.

Dr. Darwin HEM (Naryth HEM) speaks Khmer, English and French.

Education & Background:

– University of San Francisco and Royal University of Law and Economics, Bachelor of Law
– Royal School of Administration, Diploma in Economic Law
– University of Health Science, Doctor of Medicine
– Charles Sturt University, Master of Business Administration in Finance


– Cambodian Bar Association
– International Bar Association
– Cambodian WTO Committee
– Cambodian Arbitration Council

Firm Overview:

BNG Legal is a leading Cambodian law firm providing comprehensive legal services to foreign and local clients.

Registered with the Bar Association of the Kingdom of Cambodia, our legal professionals combine international standards with local expertise.

We differentiate ourselves by coupling a deep understanding of the local business environment with international professionalism and integrity.

We facilitate business, investment and trade between Cambodia and the rest of the world through innovative and cost-effective legal services.

Superior knowledge of local protocol, local procedure, and local people is necessary for any business to succeed in Cambodia.

Conducting daily business in Cambodia, BNG Legal is up to date with the newest procedures and requirements, helping clients efficiently and successfully complete any project.

LY Tayseng

Well-connected and with international experience, Mr. LY’s practice focuses on banking and finance, tax advisory and commercial litigation.

He has been appointed as panel lawyer for banks and MFIs in Cambodia and leads HBS’s team in numerous major financing projects, equity investments, IPOs and M&As, involving foreign banks and other types of investors.

Mr. LY obtained his Master of Laws from Nagoya University, Japan, a Bachelor of Laws from the Royal University of Law and Economics, Cambodia, and Bachelor of Laws from the University Lumière Lyon 2, France.

He acted as Legal and Political Researcher and Analyst at the General Secretariat of the Supreme National Economic Council (SNEC) under the auspices of the Prime Minister’s Cabinet from 2005 to 2012. Mr. LY served as the Secretary General of the Bar Association of the Kingdom of Cambodia from 2004-2008, and has been a Labor Arbitrator for the Arbitration Council of the Ministry of Labor and Vocational Training since 2003. He is a lecturer at the Royal School of Administration where he teaches business law, labor law and dispute resolution to senior government officers, and at the Royal University of Law and Economics since 2003. He was appointed as a Notary Public and as the Director of HBS Notary Public in 2008.

Mr. LY has been accredited by the Securities and Exchanges Commission of Cambodia (SECC) to advise on securities laws and regulations. In addition, he has also been recognized by Ministry of Commerce as Legal Mark Agent of Cambodia.

Mr. LY is fluent in English, French and Khmer, and has conversational Japanese.


– Executive LL.M, The King’s College London, UK
– Leadership in Law Firm, Harvard Law School, USA
– Master of Laws, Nagoya University, Japan
– Bachelor of Laws, University Lumière Lyon 2, France
– Bachelor of Laws, Royal University of Law and Economics, Cambodia


– Director of HBS Notary Public
– Bar Association of Cambodia
– Legal, Political Researcher and Analyst, General Secretariat of the Supreme National Economic Council
– Labor Arbitrator for the Arbitration Council, Ministry of Labor and Vocational Training
– Lecturer, Royal School of Administration

Firm Overview:

Established in 2005, HBS Law is a highly regarded multi-service law firm. We work with a broad client base which includes major international and Asian companies. Our team has solid expertise to assist foreign and local clients in a wide range of sectors. We also assist educational institutions, international organizations, Government agencies and senior Government leaders.

A combination of teamwork, specialist skills and cooperative relationships with Government means that we are at the forefront of Cambodia’s rapid legal development. HBS Law is frequently called upon to participate in precedent-setting deals and advice on new legislation and regulations.

By building our business in response to clients’ needs, HBS Law has become a significant and credible practice in South East Asia. Our philosophy of developing relations of trust and honesty with our clients is profoundly important. Consequently, our clients entrust us with their most complex legal matters.

HBS Law is particularly proud of its role as a corporate citizen. We provide a pro bono service for people who cannot afford legal services, focusing on aid to children, victims of domestic violence and other vulnerable members of our community. We provide a learning forum for law graduates, junior lawyers, judicial officers and law enforcement officers throughout the country.

We are thankful to all our colleagues who are striving to maintain HBS Law as a leading law firm and all our valued clients who have trusted us as their business partners. We look forward to welcoming new clients to benefit from our experience and honest, balanced services.