Mari Mohsen
Mari Mohsen is an experienced employment law practitioner adeptly navigating a spectrum of employment-related matters, dispute resolution as well as compliance and investigations. She has extensive experience with providing strategic advisory to companies, board members and management on a wide variety of employment-related matters such as corporate restructurings, cooperation procedures, collective bargaining agreements, service and executive employment contract issues as well as termination of employment. She is also an expert in complex questions related to occupational health and safety matters. Her dispute resolution practice covers a wide variety of employment related disputes and criminal matters from dispute avoidance and conflict management to litigation and arbitration. She also serves as arbitrator. Further, Mari supports clients in internal investigations and other workplace-related non-compliance and whistleblowing matters. With a rich professional background that includes e.g. tenure in the Finnish court system Mari is a recognized expert in her field frequently lecturing on diverse facets of employment law. She has also previously acted as a member of the Labour Council and a long-term secretary of the Finnish Employment Law Association.
Avance Attorneys Ltd, Partner 2024–
Roschier, Attorneys Ltd., Senior Associate (2017–2022), Principal Associate (2022–2024)
Attorneys-at-Law Roihu Ltd, Partner (2016–2017)
Attorneys-at-Law Eversheds Ltd, Specialist Counsel (2013–2016)
Labour Court, Assistant Judge (2011–2013)
Helsinki Court of Appeals, Assistant Judge (2008–2011, 2013)
Trained on the bench, District Court of Lappeenranta (2007)
Aalto University, Researcher (2006)
Finnish Arbitration Academy, The Finland Chamber of Commerce, 2016
Master of Laws, University of Helsinki, LL.M., 2006
“Investigations handbook on workplace harassment” (“Häirinnän selvittäjän käsikirja”), author M. Lustig, foreword M. Mohsen
Alma Insights, 2025
“100 questions regarding the legal aspects of medical leave” (“100 kysymystä sairauspoissaolojen juridiikasta”), with A. Saari and S. Heiskala
Alma Insights, 2021
“Special issues in the exequatur procedure of the Helsinki Court of Appeals concerning international family law”
Helsinki Court of Appeals, 2013
“The societal role of the Labour Court in 1947-1974”
Annual publication of the Finnish Labour Law Association, 2007
Member of the Finnish Bar Association
Member of the European Employment Lawyers Association (EELA)
Member of the International Bar Association (IBA)
Secretary of the Finnish Labour Law Association (2017–2022)
Member of the Central Strike Committee of the Association of Finnish Lawyers (2010–2013)
Member of the Board and Influence Committee of the Finnish Association of Judges (2010–2013)
Member and Vice-Chair of the Board of the Finnish Association of Judges (2010–2013)
Secretary of the Finnish Association of Judges (2009–2010)
Mari Mohsen is ranked as “Recommended” in Employment & Labor.
Lexology Index 2025
Mari Mohsen is recognised as a “Next generation partner” in Employment.
The Legal 500 2025
“The great thing about her is that she looks at everything from a client and in-house perspective. Her advice is easy to implement and practical, not just theoretical.”
“Mari is always willing and able to provide advice, even in tough situations where there is no clear right answer. She understands complex employment law situations even in a business context.”
“She is a star. Mari Mohsen handled our matter with excellence.”
“Mohsen is experienced in employment law. She works very comprehensively and devotedly. Mohsen’s skills and experience are just brilliant.”
“Mari is one of the best professionals I know and have worked with in Finland within her area of expertise.”
Chambers Europe 2025
Mari Mohsen is ranked as “Recommended” in Employment & Labor.
Lexology Index 2024 (formerly Who‘s Who Legal)
Mari Mohsen is recognised as a “Next Generation Partner” in Employment.
“Mari Mohsen handles litigation professionally and efficiently.”
“Mari Mohsen is a star. She has an ability to adapt quickly into business language and also provide very practical advice, instead of staying behind a theoretical framework. She is not afraid of giving legal advice, even when against desired business needs, when necessary. She is confident, yet in a humble manner, and also very natural when talking with business people.”
“We have very closely worked with Mrs. Mari Mohsen, and are very pleased with the service level she has provided.”
The Legal 500 2024
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