mr. Maurice Sijben
sijben@sijbenpartners.nl
mr. Maurice Sijben
Maurice Sijben
Lawyer/partner
sijben@sijbenpartners.nl
045-5602200
I see my work as a game of chess, a challenge that requires creative solutions.
Expertise: employment law and mediation
Maurice Sijben has been working as a lawyer (in the Limburg district) for over 34 years. He is trained as an employment law specialist. Maurice Sijben is also a member of the Dutch Association of Mediation Lawyers (NVVMA).
In the field of employment law, he deals with, among other things, dismissal, labour disputes, reorganisations and takeovers, non-competition clauses, employers' liability and civil service law. He publishes publications and presentations, and is also associated with several companies, associations and foundations in South Limburg as an advisor, director and supervisory director.
In mediation, Maurice Sijben’s help is mainly sought in employment disputes, but also in family law issues and various other problems.
Mr. Maurice Sijben has registered the following specialisations with the Dutch Bar Association:
– Labour law
- Insolvency law
This registration requires you obtain ten training points annually in each registered legal area in accordance with the standards of the Dutch Bar Association.

Email mr. Maurice Sijben
mw. mr. Gabi Jongen
jongen@sijbenpartners.nl
mw. mr. Gabi Jongen
Gabi Jongen
Lawyer
jongen@sijbenpartners.nl
045-5602200
It’s not just fun and games here at the office.
Expertise: insolvency law, employment law, statutory debt restructuring and complex issues relating to personal and family law.
Gabi Jongen studied private law and commercial and corporate law. She specialises in insolvency law, employment law and statutory debt restructuring. She also focuses on personal and family law.
Gabi is a member of the Curators Association Sector Maastricht
Mr. Gabi Jongen has registered the following specialisations in the register of legal areas of the Dutch Bar Association:
- Personal and Family law
- Insolvency law
This registration requires you obtain ten training points annually in each registered legal area in accordance with the standards of the Dutch Bar Association.
Email mw. mr. Gabi Jongen
mr. Milan Gaber
gaber@sijbenpartners.nl
mr. Milan Gaber
Milan Gaber
Lawyer
gaber@sijbenpartners.nl
045-5602200
Better safe than sorry.
Expertise: employment law, intellectual property and contract law
Milan Gaber specialises in employment law. He completed the Grotius specialisation course in employment law (post-academic course). Milan Gaber has experience as both a lawyer and a corporate legal expert. As a corporate lawyer in the music & entertainment industry, he has a further specialisation in intellectual property law and (international) contract law. The combination of lawyer/corporate legal expert means Milan Gaber has special expertise at the intersection of HRM-related issues and employment law.
Milan is a member of the Copyright Association.
Mr. Maurice Sijben has registered the following specialisations with the Dutch Bar Association:
– Labour law
– Intellectual property law
This registration requires you obtain ten training points annually in each registered legal area in accordance with the standards of the Dutch Bar Association.
Email mr. Milan Gaber
mw. mr. Lieke Isenborghs
isenborghs@sijbenpartners.nl
mw. mr. Lieke Isenborghs
Lieke Isenborghs
Lawyer
isenborghs@sijbenpartners.nl
045-5602200
Can’t as a word doesn’t exist.
Expertise: procedural law, employment law, rental law and construction law.
Lieke graduated in 2003 and has since worked for two legal expenses insurers, as well as in the legal profession.
She has assisted private clients, SMEs and larger companies in a wide variety of legal issues and disputes.
In 2018, Lieke moved to Sijben & Partners Advocaten and is mainly involved in general (litigation) practice including employment law. Lieke also specialises in rental law and construction law. Lieke is also a member of the association for construction lawyers (VBR-A).
Working closely with the client. That’s her motto. She looks for solutions that do legal justice to the situation, but can also empathise with the often emotional aspects that clients experience during legal conflicts.
Mw. mr. Lieke Isenborghs has registered the following specialisations in the register of legal areas of the Dutch Bar:
– General practice; civil
– Civil procedural law.
This registration requires you obtain ten training points annually in each registered legal area in accordance with the standards of the Dutch Bar Association.
Email mw. mr. Lieke Isenborghs
mr. Stijn Hamers
hamers@sijbenpartners.nl
mr. Stijn Hamers
Stijn Hamers
Lawyer
hamers@sijbenpartners.nl
045-5602200
At the heart of difficulty lies opportunity.
Expertise: employment law
Stijn Hamers completed a Master’s Degree in Law and Labour at the University of Maastricht, specialising in labour and health law. Stijn has been working at Sijben & Partners Advocaten since 2019.
At Sijben & Partners Advocaten, Stijn focuses on various legal areas, including employment law. In addition, Stijn is particularly interested in sports law.
Stijn contributed to the Journal of Sport & Law, writing an article about the doctor’s duty of confidentiality in professional football.
Publications
Contribution by Stijn Hamers in the Journal for Sport & Law
Email mr. Stijn Hamers
mw. mr. Beau Ceryse van Hees
vanhees@sijbenpartners.nl
mw. mr. Beau Ceryse van Hees
Beau Ceryse van Hees
Lawyer
vanhees@sijbenpartners.nl
045-5602200
The biggest risk is not taking a risk
Expertise: contract and liability law, real estate law and personal injury
Beau van Hees completed a Master’s Degree in Dutch Law at the University of Maastricht, specialising in criminal law and private law. She has been working in legal practice since 2017.
Beau moved to Sijben & Partners Advocaten on 1 February 2021 and is mainly concerned with contract law and real estate law, but will also focus on issues relating to personal injury and inheritance law.
Her determination and drive ensures Beau is able to provide optimal representation in the interests of her clients. She has an eye for every detail and every important item, which means she brings every legal dispute to a pragmatic conclusion.
Email mw. mr. Beau Ceryse van Hees
mw. mr. Firi Boukhris
boukhris@sijbenpartners.nl
mw. mr. Firi Boukhris
Firi Boukhris
Lawyer
boukhris@sijbenpartners.nl
045-5602200
Never let the fear of striking out keep you from playing the game.
Expertise: social security law, insolvency law, insurance law and real estate law.
Firi Boukhris completed a Master’s Degree in commercial and corporate law at Maastricht University. She is also trained as a special curator in youth cases. Firi has gained experience in the legal profession and at various government agencies. She has also been a volunteer at the Limburg Children’s and Youth Rights Centre for several years.
Firi came to work at Sijben & Partners Advocaten at the beginning of 2021. At Sijben & Partners Advocaten she focuses on social security law, insolvency law, real estate law and insurance law.
Email mw. mr. Firi Boukhris
mw. mr. Mayke Ploemen
ploemen@sijbenpartners.nl
mw. mr. Mayke Ploemen
Mayke Ploemen
Lawyer
ploemen@sijbenpartners.nl
045-5602200
If you have the ball, your opponent doesn't
Expertise: Law of persons and family law, inheritance law, employment law, social security law
Mayke Ploemen studied private law and labor law. She has specialized in labor law and social security law since 2009. She also deals with complex issues in the field of personal and family law and inheritance law.
Mayke is a member of the association of lawyers specializing in the law of persons, family and inheritance law (vFAS).
Mr. Mayke Ploemen has registered the following specializations in the register of areas of law of the Dutch Bar Association:
- Law of persons and family law
- Inheritance law
- Labor law
- Social security law
This registration requires her to obtain ten training points in each registered area of law each calendar year according to the standards of the Dutch Bar Association.

Email mw. mr. Mayke Ploemen
mw. Megan Berghmans
berghmans@sijbenpartners.nl
mw. Megan Berghmans
Megan Berghmans
Legal Expert
berghmans@sijbenpartners.nl
045-5602200
Success begins with desire
Expertise: contract law (contract law)
Since beginning her legal education, Megan has practiced legal theory in various ways with great interest and enthusiasm. In 2022, Megan completed her bachelor's degree in Law at Maastricht University. Subsequently, she pursued the masters in Forensics, Criminology and Justice and Dutch Law, also at Maastricht University. Megan focuses on contract law within our firm.
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mw. mr. Edith Sars
sars@sijbenpartners.nl
mw. mr. Edith Sars
Edith Sars
Legal Expert
sars@sijbenpartners.nl
045-5602200
Looking at what is possible.
Edith completed the Master of Laws, profile Family and Juvenile Law, at Tilburg University. During her studies, Edith gained experience at other law firms. With a focus on solutions and a listening ear, she dedicates herself to her clients.
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mw. mr. Zoë Heuts
heuts@sijbenpartners.nl
mw. mr. Zoë Heuts
Zoë Heuts
Lawyer
heuts@sijbenpartners.nl
045-5602200
Through the “jungle of law,” I guide my client to reach the best feasible legal solution.
Expertise: contract law, real estate law and employment law.
In 2020, I completed my master's degree in Dutch Law at Maastricht University. As of January 27, 2022, I terminated as a lawyer. On February 1, 2025 I made the transition to Sijben & Partners Advocaten. I specialize in contract law, construction law, neighbor law, rental law and labor law.
In my work I show decisiveness, sharpness and a solution-oriented attitude. I am friendly, have both feet on the ground and treat people as I would like to be treated myself. My client's best interests always come first. Through the “jungle of law,” I guide my client to arrive at the best feasible legal solution.
Email mw. mr. Zoë Heuts