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The Firm

Mark, Aronin, Bielicki & Gliemann – Attorneys at Law

Our law firm was born from the strategic partnership between Mark & Aronin and Bielicki & Gliemann, in 2025. This allowed us to update and expand our range and volume of specialized legal services, thus covering more branches of law. We have been able to offer the broadest coverage of legal services within our firm.

Our extensive client base provides us with the necessary know-how for a fluid and dynamic relationship, ensured by the high quality of our services, the experience of our professionals, and our firm’s adequate technology and infrastructure.

The ongoing training of our attorneys, who serve as distinguished scholars and professors at prestigious academic institutions and maintain constant legal and jurisprudential updates, ensures the high quality of our legal services, whether advisory or litigation.

Mariano H. Mark

Mariano H. Mark

  • Law Degree, University of Buenos Aires, 1993.
  • Postgraduate Studies in Bankruptcy Law and Corporate Law, University of Buenos Aires, 1994 – 1995.
  • Professor of Labor Law at University of San Andres (2019 – Present)
  • Professor of Commercial Law and Labor Law at the University of Buenos Aires (2004 - 2012)
  • Clerk at the Argentinian National Court of Appeals of Labor (1990-2003)

Author of the books:

  • Manual de Jurisprudencia de Derecho del Trabajo y la Seguridad Social (Ed. Abeledo Perrot – First Edition 2003 –Reprinted annually)
  • Ley de Contrato de Trabajo. Anotada con Jurisprudencia (Ed. Abeledo Perrot – First Edition 2005 – Ed. Hammurabi- Third Edition 2016)
  • Ley de Contrato de Trabajo Comentada (Ed. Abeledo Perrot –First Edition 2006. Second Edition 2011)

Co-author of books:

  • Formas y Cláusulas Modernas de Contratación (Ed. Facultad de Derecho – UBA, 1997)
  • Letra de Cambio y Vale o Pagare (Ed. Abeledo Perrot, 2005)
  • Tratado de Derecho del Trabajo (Ed. Rubinzal Culzoni, 2005)
  • Summa Laboral (Ed. Abeledo Perrot, 2011)
  • Author of numerous articles of doctrine and annotated jurisprudence published in the journals, “Revista de Derecho Laboral y Seguridad Social", "Jurisprudencia Argentina," and "Revista del Derecho Comercial y de las Obligaciones"
Lisandro S. Aronin

Lisandro S. Aronin

  • Law degree, University of Buenos Aires, 2000
  • Postgraduate seminar in Common Law, Denver, CO, USA, 2001
  • Postgraduate studies in Labor Law – Austral University, 2004
  • Clerk at the Argentinan National Court of Appeals of Labor (1993-2003)
  • Professor of the courses “Labor Law and Social Security Law,” “General Theory of the Law” and “Interpretation of the Law Buenos Aires (UBA, 2000 – 2015)
  • Professor of courses on Individual Labor Law, Collective Labor Law, and Social Security at the Catholic University of Salta, (2004)
  • Coordinator for Postgraduate Studies in Healthcare Law at the Catholic University of Argentina, (2005-2008)
  • Editor of the Journal of Labor Law and Social Security (Ed. Lexis Nexis / Abeledo Perrot 2003-2010)
  • Author of numerous articles of doctrine and annotated jurisprudence published in the journals, “Revista de Derecho Laboral y Seguridad Social", "Jurisprudencia Argentina," and "Revista del Derecho Comercial y de las Obligaciones"
  • Contributing author to collective work, “Summa Laboral” (Abeledo Perrot, 2011)
Gabriel E. Bielicki

Gabriel E. Bielicki

  • Law degree, University of Buenos Aires, 2009
  • Postgraduate degree in labor law from the same university (2015), and extensive experience in business consulting
  • Former Consultant for the BAPRO group (2011 - 2015)
  • Master Degree in work accidents, Austral University
  • Portfolio management and legal area coordination at CTRL365 Group for LATAM (2013-2023)
  • Professor of international law (2009)
  • High experience in collective and individual negotiation
  • High experience in coordination of litigation in work accidents
  • Insurance portfolio management and quantification advice
Pablo G. Gliemann

Pablo G. Gliemann

  • Law degree, University of Buenos Aires, 2009
  • Focus on Tax and Public Law (2009)
  • Honorary Diploma (2010)
  • Specialized in Public Law with Special Mention (ECAE-PTN, 2013)
  • Specialized in State Contracting, with thesis recommended for publication (ECAE-PTN, 2017)
  • Associate Professor of Constitutional Law (University of Palermo, 2019)
  • Former Professor of Constitutional Law (UBA, 2006–2010)
  • Former Editorial Coordinator of Thomson Reuters-La Ley-Abeledo Perrot (2006–2012)
  • Legal Advisor to the Ministry of Defense (2009–2025)

Contact

Lavalle 1672 4º 24
C1048AAN Buenos Aires, Argentina
Tel. (011) 4371-1165