Guy Castegnaro is a barrister admitted to practise before the High Court of Justice, a member of the Luxembourg Bar Association and founder of Castegnaro. His qualifications include a master of laws (University of Paris I, Panthéon-Sorbonne, 1991), a master of laws (LLM) in German law (University of Kiel, Germany, 1993) and an advanced course of law (University of Luxembourg). Guy Castegnaro is a former chairman (2011–2015) of the European Employment Lawyers Association.