Services

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 district of Limburg) for over 34 years. He is trained as an employment law specialist. In addition, Maurice Sijben is a member of the Dutch Association of Mediation Lawyers (NVVMA).

In the field of labor law, his areas of expertise include: dismissal, labor disputes, reorganizations and takeovers, non-competition clauses, employer liability and civil service law. He also gives publications and presentations and is advisor, director and commissioner for several companies, associations and foundations in South Limburg.

In mediation, Maurice Sijben is mainly called upon to help with labor disputes, but also with family law issues and various other problems.

Mr. Maurice Sijben has registered the following specializations in the register of areas of law of the Dutch Bar Association:

- Labor law
- Insolvency law
This registration obliges to obtain ten training points each calendar year in each registered area of law, according to the standards of the Dutch Bar Association.
     

mw. mr. Gabi Jongen

Gabi Jongen
Lawyer
jongen@sijbenpartners.nl
045-5602200

It's not all about the marbles 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 specializes in insolvency law, legal debt restructuring and the law of persons and family law.

Gabi is a member of the Receivers Association Sector Maastricht.

Mr. Gabi Jongen has registered the following specializations in the register of areas of law of the Dutch Bar Association:
- Law of persons and family law
- Insolvency 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.

mr. Milan Gaber

Milan Gaber
Lawyer
gaber@sijbenpartners.nl
045-5602200

Better safe than sorry.

Expertise: employment law, intellectual property, contract law, and mediation

Milan Gaber specializes in employment law. He completed the Grotius specialization program in employment law (postgraduate course). Milan Gaber has experience as both a lawyer and a corporate lawyer. As a corporate lawyer in the music and entertainment industry, he has further developed his expertise in intellectual property law and (international) contract law. The combination of lawyer and corporate lawyer means that Milan Gaber has special expertise at the intersection of HRM-related issues and employment law.

Milan is a member of the Dutch Copyright Association.

Milan Gaber is a qualified MfN-registered mediator. Milan Gaber's mediation services are mainly sought in employment disputes, but also in corporate law issues and various other matters.

Mr. Milan Gaber has registered the following specializations in the Dutch Bar Association's register of legal areas:

– Employment law
– Intellectual property law

This registration requires him to obtain ten training credits in each registered area of law each calendar year in accordance with the standards of the Dutch Bar Association.

mr. Stijn Hamers

Stijn Hamers
Lawyer
hamers@sijbenpartners.nl
045-5602200

At the heart of difficulties lie opportunities.

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

mw. mr. Beau Ceryse van Hees

Beau Ceryse van Hees
Lawyer
vanhees@sijbenpartners.nl
045-5602200

Taking no risks is the biggest risk

Expertise: contract and liability law, real estate law and personal and family law 

Beau van Hees studied at Maastricht University the master Dutch Law, specializations criminal law and private law. She has been working in the practice of law since 2017.

As of February 1, 2021, Beau has made the switch to Sijben & Partners Lawyers and is primarily engaged in contract law and real estate law but will also focus on issues related to personal injury and personal and family law.

Because of her thoroughness and drive, Beau is able to represent the best interests of her clients. She has an eye for every detail and every interest which enables her to bring every legal dispute to a pragmatic conclusion.

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: insolvency law, real estate law, contract law and BKR cases

Firi joined Sijben & Partners Lawyers in 2021. She took the master's degree in commercial and corporate law at Maastricht University. She is also trained as a special trustee in juvenile cases.

Within our firm, Firi focuses on insolvency law, real estate law, contract law and BKR cases. She assists both individuals and entrepreneurs.

As an attorney, Firi is known for her direct communication, transparency and pragmatic approach. She litigates when necessary, but also seeks efficient solutions that are truly in her clients' best interests. Her clients' interests always come first.

mr. Naud Peters

Naud Peters
Attorney
peters@sijbenpartners.nl
045-5602200

Those who give up never win.

Expertise: corporate law, insolvency law, and real estate law

At Sijben & Partners, Naud Peters focuses primarily on corporate, insolvency, and real estate law. He advises and litigates on behalf of entrepreneurs, shareholders, and directors on contractual issues, cooperation and disputes within the company, restructuring, and insolvency proceedings. In real estate law, he focuses on the purchase and sale of real estate, securities, and rental and usage disputes.

Naud is known for his tenacity and down-to-earth approach. He never gives up, sinks his teeth into a case and persists until it has been thoroughly investigated. At the same time, he is empathetic and committed; Naud listens carefully to his clients, is aware of the underlying interests and tensions that a legal conflict can entail, and translates this into a clear, practical strategy.

Striving for the best result for his clients is a matter of course for Naud. Depending on the interests and needs of his clients, this may involve reaching an amicable settlement or conducting legal proceedings. Naud also advises his clients in the preliminary stages. His goal is to offer legally sound and future-proof solutions.

mw. mr. Edith Sars

Edith Sars 
Legal Expert 
sars@sijbenpartners.nl
045-5602200

Looking at what is possible.

Edith completed the Master's degree in Law, 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. 

mw. mr. Danée Laumen

Danée Laumen
Lawyer
laumen@sijbenpartners.nl
045-5602200

The best way out of problems is to go right through them.

Expertise: labor law, contract law

Danée Laumen obtained a master's degree in Dutch Law with a specialization in private law and a master's degree in Labor and Law with a specialization in Labor and Health Law from Maastricht University. She has been working in legal practice since 2023.

In September 2025, Danée made the switch to Sijben & Partners Advocaten, where she will further expand her practical knowledge. Clear communication and honesty are of great importance to her when handling a case. She strives not only to find the best legal solution, but also the solution that best suits her client's interests.

mr. Hans Verstappen

Hans Verstappen 
Bankruptcy officer
verstappen@sijbenpartners.nl
045-5602200

With an eye for people and for figures

Hans graduated as a tax lawyer from Maastricht University in 1993. After his studies he worked as a tax consultant at a specialized office in The Hague. He now has more than 25 years of experience as an independent entrepreneur in a commercial environment.

Besides his entrepreneurship, Hans is active as a mediator, guiding people in conflict situations and acting as an advocate in negotiation processes.

He is registered with the Mediators Federation Netherlands (MfN) and with the National Association of Confidential Advisors (LVV).

With his financial-legal background and experience as an entrepreneur, Hans supports the bankruptcy practice with a practical and solution-oriented approach.

mw. mr. Demi Orbon

Demi Orbon
Jurist 
orbon@sijbenpartners.nl
045-5602200

The best solution is both legally sound and practically feasible.

Expertise: employment law

In 2022, Demi graduated from Maastricht University, where she earned a master’s degree in Labor and Health. Since then, she has been working as a lawyer specializing in employment law. With a strong interest in human resources, she advises clients on a wide range of employment law matters.

mw. mr. Iona Lenssen

Iona Lenssen
Lawyer
lenssen@sijbenpartners.nl
045-5602200

Strong in strategy. Human in approach.

Iona obtained her master's degree in Dutch Law, specializing in private law, from Maastricht University in August 2025. She joined Sijben & Partners in November 2025, where she puts her knowledge of law into practice.

Prescilla Reutelingsperger

Prescilla Reutelingsperger
Lawyer
reutelingsperger@sijbenpartners.nl
045-5602200

Thinking ahead is half the battle..

mw. mr. Femke Nix

Femke Nix
Lawyer
nix@sijbenpartners.nl
045-5602200

The law provides the framework; the situation determines the solution. 

Expertise: private law

In 2026, Femke graduated from Maastricht University, where she earned a master’s degree in Dutch law with a specialization in private law. At the firm, she focuses on general legal practice.