A partner at Fromont Briens, which he joined in 2005 following his admission to the bar, Guillaume Desmoulin draws from his strong knowledge in the field of  labor relations, and particularly restructurings, collective redundancies and collective bargaining, to represent employers in a wide range of labor and employment law matters. He primarily works with software publishers, transport companies, banks and the steel industry. He also represents clients in litigation matters, before labor, civil and criminal courts, including litigation related to:

  • Termination of high-level employees and expatriates
  • Collective bargaining matters
  • Professional elections
  • Employee transfers
  • Occupational illnesses

He regularly counsels local and international companies with operations in France on matters including mobility, termination procedures, working time, restructurings, due diligence, collective bargaining and workforce reductions. Guillaume performs labor audits, which allow his clients to anticipate and prevent liability by verifying compliance with obligations under France’s social and labor laws.

Guillaume has authored articles for French and international publications on a variety of topics concerning labor law and legal analysis. He also contributed a chapter to a book on “Employment and Labour law,” published by Global Legal Insights. He is regularly invited by various legal and professional associations to speak on current topics in labor law and human resource management.

He received a certificate of specialization in labor law delivered by the Paris Bar in 2009.

Professional & Community Affiliations


Master DPRT Association

News, Analysis & Press

Littler Global Guide - France - Q3 2019

Global Guide Quarterly

October 16, 2019

Overview of European Works Councils


August 20, 2019

Littler Global Guide - France - Q2 2019

Global Guide Quarterly

July 17, 2019

Littler Global Guide - France - Q1 2019

Global Guide Quarterly

April 15, 2019

Littler Global Guide - France - Q4 2018

Global Guide Quarterly

January 16, 2019

Littler Global Guide - France - Q3 2018

Global Guide Quarterly

October 11, 2018

Working Time and Commutes in France


July 25, 2018

Littler Global Guide - France - Q2 2018

Global Guide Quarterly

July 20, 2018

Littler Global Guide - France - Q1 2018

Global Guide Quarterly

April 23, 2018

Littler Global Guide - France - Q4 2017

Global Guide Quarterly

January 19, 2018

Littler Global Guide - France - Q3 2017

Global Guide Quarterly

October 12, 2017

Littler Global Guide - France - Q2 2017

Global Guide Quarterly

July 11, 2017

Littler Global Guide - France - Q1 2017

Global Guide Quarterly

March 31, 2017

European Employment Law Cases – Supreme Court rules on duration, continuity and burden of proof in respect of daily rest break

July 2013

Encadrement renforcé de la Vidéosurveillance

Editions Francis Lefebvre (Navis) –Tribune

May 21, 2012

Books & Book Chapters

  • Global Legal Insights, Employment and Labour Law, 2013

Speaking Engagements

2017 Littler Global France Seminar


June 29, 2017

Outsourcing: A Global Onslaught on the Use of Independent Contractors

The 2017 Executive Employer® Conference

May 11, 2017

Employment Law Update for Companies Doing Business in France & Germany

March 28, 2017

Inaugural Europe Conference - Germany


November 10, 2016


  • University of Montpellier, 2003


  • English
  • French

Bar Admission