Ms. Marty L. Hamburger began her career in the Netherlands in 1995 as an attorney specializing in maritime and fisheries law, but has also built up a diverse international practice since the 1980s, particularly through her experience as a lawyer in Switzerland. During that time, she developed a particular interest in lease law—specifically commercial leases—as well as personal and family law.
She expanded her knowledge of contract law and specialized in inheritance law. She successfully completed the Magna Charta specialization program for the 2015–2016 academic year, as well as the IMFO inheritance law course in 2014, and is a prospective member of VEAN, the association for inheritance law attorneys. In addition, she specializes in matrimonial property law; she has completed various training programs
, including certification as a mediator and a forensic mediator, which led to her appointment as a forensic mediator for various courts and courts of appeal. Furthermore, she is a coach and a collaborative lawyer. This means she works as part of a team with other specialized attorneys to reach an agreement outside of court. This method originated in the United States and Canada and has also been very successful in the Netherlands.
Ms. M.L. Hamburger is a member of the vFAS (Association of Family Law Attorneys and Divorce Mediators), the Collaborative Divorce Holland Association (Collaborative Divorce), and the NMv.
In the past, Ms. M.L. Hamburger gained expertise in the field of equestrian law. She herself played a prominent role in the very first European Maccabiade for dressage riders, held in Berlin in 2015, which is comparable to the Olympic Games. She has written columns for equestrian magazines and is a member of a panel that answers legal questions regarding the purchase of a horse.
As chairwoman, Ms. M.L. Hamburger has a special connection with the Bauhaus Buildings Foundation, which is dedicated to the restoration of buildings and houses constructed in the Bauhaus style during the 1930s. The foundation is also involved in a European project to preserve Bauhaus buildings around the Mediterranean. As an attorney with international legal expertise, the foundation refers various issues to her, her colleagues at the firm, and local law firms. She recently became chair of the Claimants4Claimants Foundation, where she focuses primarily on the procedural aspects of restitution and helps shape the Foundation’s activities, in part by organizing symposia on art stolen during World War II in the Netherlands.