MONSALLIER Marie-Christine

Marie-Christine Monsallier works in the areas of business transfers and acquisitions, shareholders’ agreements, dispute resolution between partners, and executive support, particularly in anticipating risks related to liability exposure. She advises start-ups from their creation through their development and fundraising stages.

She also assists companies with their ESG strategies, turning regulatory obligations into a genuine competitive advantage. This support covers the duty of vigilance (drafting vigilance plans, adapting commercial contracts, renegotiating agreements or changing business partners, and risk prevention for executives) and the CSRD (presenting CSRD obligations to company leaders, auditing corporate practices with regard to regulatory requirements, and preparing sustainability reports).

Marie-Christine Monsallier also devotes part of her time to her position as a teacher-researcher at Université Paris Dauphine–PSL. A Doctor of Law, she is an Associate Professor (Maître de conférences) with an HDR (Accreditation to Supervise Research). She has served on the university’s Board of Directors and currently co-directs its Legal Clinic.

Carreer

• Counsel, SIMON ASSOCIES, since 2025
• Member of the Scientific Committee of H2A, specialized in CSRD matters, since 2024
• Co-director of the Legal Clinic at Université Paris Dauphine–PSL, since 202
• Independent lawyer, Paris, 2016–2023
• Counsel, August & Debouzy, 2011–2016
• Associate Professor (Maître de conférences-HDR), Université Paris Dauphine–PSL, since 2008
• Expert for AERES, 2007–2012
• Associate, Avocats aux Conseils (P. Ricard, M. Mayer), 2002–2010
• Associate, August & Debouzy, 1999–2001
• Associate Professor (Maître de conférences-HDR), Université de Lille, 1997–2008
• Associate, UGGC, 1992–1997

Education

• HDR (Accreditation to Supervise Research), Université Lille II
• PhD in Law, Université Paris Cité
• DESS in Business Law, Université Paris Cité
• DEA in Public Finance and Taxation, Université Panthéon-Assas

Memberships

• Member of ACE (Avocats Conseils d’Entreprises) – Co-chair of the corporate law commission

Publications

• Commentary on Cass. com., 7 May 2025, No. 23-21-508: Abuse of majority and nullity (forthcoming, Dalloz Actualités – Corporate Law)
• L’auditeur de durabilité, Revue des sociétés, January 2025, No. 1
• Le devoir de vigilance et la responsabilité des dirigeants, H2A, June 2023
• Responsabilité des dirigeants et COVID, Dauphine, 2020
• Regular contributor, Dalloz Actualités – Corporate Law
• Member of the Scientific Committee of Revue RISQUES – Les Cahiers de l’Assurance

Languages

• French
• English