Christophe Ernzen


Christophe specialises in employment law. He advises financial institutions, funds/private equity players, multinationals and other corporate clients on the full range of individual and collective employment law topics including contractual documentation, workplace culture issues, sensitive separation cases and litigation.

He has significant experience in M&A projects (cross-border mergers, asset/share deals) and employee representation matters (European Works Council, social elections, etc.). He also has particular expertise in health and safety at work issues as well as in cross-practice matters including HR digitalisation and employee monitoring projects.

Christophe chairs the Legal Group of the British Chamber of Commerce (BCC) for Luxembourg and also sits on the BCC Council. He is also a member of ELSA (the Employment Law Specialists Association of Luxembourg). Christophe joined the firm in 2010.

Published Work

  • Christophe Ernzen and Laurie Lougsami (2019) “Internship regulation: Closing the loophole”, article in AGEFI, Luxembourg: Agefi.
  • Christophe Ernzen and Catherine Di Lorenzo (2017) “Employees’ right to use company IT vs. Employer’s rights to monitor such use”, article in Connexion magazine, Luxembourg: American Chamber of Commerce in Luxembourg.

Speaking Engagements

Guest Speaker, “2021 Legal Update - Post-Brexit, Continuing Pandemic - what's next?!”, British Chamber of Commerce for Luxembourg, 24/03/2021

Speaker, “Covid-19 - Return to work - back to normal?”, Allen & Overy client event, 20/05/2020

Guest Speaker, “Legal guidance to the New Normal - Experts provide insights into the Covid-19 situation from a corporate, finance, employment and data protection law perspective”, British Chamber of Commerce for Luxembourg, 19/05/2020

Speaker, “Information/ Consultation Seminar: Staff Delegation - rights & obligations”, Allen & Overy client event, 19/06/2019

Guest Speaker, “Social elections”, POG HR Community, 13/12/2018

Leadership Positions And Professional Affiliations

Vice-Chair of Legal Group, British Chamber of Commerce for Luxembourg Member, Employment Law Specialists Association of Luxembourg
Key lawyer
Legal 500, 2021



Admitted as avocat à la cour, Luxembourg, 2013

Admitted as avocat, Luxembourg, 2011


LL.M., Trinity College, Dublin, 2010

Master 2, European Economic and Financial Criminal Law, Université du Luxembourg, 2009

Master 1, International Business Law, Université Panthéon-Sorbonne (Paris I), 2008


English, Luxembourgish, German, French
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.