Contract law

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.

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. 

Edith Voragen

Edith Voragen
Secretary
voragen@sijbenpartners.nl
045-5602200

Getting together is just the start,

staying together is progress,

collaborating is success.

Edith Voragen has been working as a legal secretary at Sijben & Partners Lawyers since 2016. She provides secretarial support to the corporate law section. Before joining Sijben & Partners Advocaten, Edith gained over 8 years of experience as a legal secretary at three other law firms.

Yvonne Claessen

Yvonne Claessen
Secretary
claessen@sijbenpartners.nl
045-5602200

Love what you do and do what you love!  

Since early 2020, Yvonne Claessen has joined our team at Sijben & Partners. She works in the Labor Law section. Before that, she worked for almost twenty years at three law firms in the Maastricht region. She highly values enthusiasm, perseverance, collegiality and client focus.

Vivian Ploum

Vivian Ploum
Secretary
ploum@sijbenpartners.nl
045-5602200

Dream it, Believe it, Achieve it

Since early 2021, Vivian has been working at Sijben and Partners for the employment law section. She also supports the trustees in bankruptcies. Vivian has over 20 years of experience in the legal profession, in short an all-round legal secretary. 

Sanne Rothkrantz

Sanne Rothkrantz 
Secretary
rothkrantz@sijbenpartners.nl
045-5602200

Every beginning is an opportunity to grow  

Sanne Rothkrantz graduated in 2021 as a management assistant/ executive secretary. Shortly thereafter, she completed an internship with our office.

Sanne worked in another sector after graduation and is now back at our office. As of February 17, 2025, Sanne will start as a secretary.

Sharon Vaessen

Sharon Vaessen
Secretary
vaessen@sijbenpartners.nl
045-5602200

Enjoying your work leads to excellence in your work

Sharon has been working as a legal secretary at Sijben & Partners Advocaten since 2026. She began her career in 2006 as a secretary at a law firm and has since gained extensive experience as a legal secretary at several law firms. Sharon was previously employed at our firm from 2010 to 2016. She supports attorneys and legal professionals with great dedication, precision, and, above all, enthusiasm. We are delighted that Sharon has returned.