Louis-Martin O'Neill

Érik is passionate about his area of practice and strives to work in partnership with clients. As both advisor and lawyer, he specializes in labour and employment law. He offers preventive and strategic advice to clients from many fields of business and industry and frequently represents clients before specialized administrative tribunals and the superior courts. Érik has been recognized by several directories as one of the best lawyers in Canada in his practice area. The compan...

Catherine Biron, CPHR, is a partner in the Montréal office of Langlois Lawyers. She advises and represents businesses on all aspects of labour and employment law, human rights, company policies, health and safety and working relations. Catherine holds a master’s degree in labour law and human rights law from the University of Oxford (England) and she is a graduate of McGill’s Executive Institute, as well as CPHR. She represents and counsels unionized and non-unionized busin...

Frédéric Plamondon has broad litigation experience with a strong focus on white-collar defence, securities litigation and class actions. He advises corporations, public issuers and market participants in a wide range of investigations, frauds and other financial crime matters, including foreign corruption. Frédéric is regularly called upon to take part in proceedings involving various regulators and public bodies, as well as in competition and securities class acti...

Jean-François Gagnon is the Chief Executive Officer of Langlois Lawyers. He is also a member of the firm’s Executive Committee and Board of Directors. His practice focuses on complex commercial litigation, corporate governance, strategy, crisis management, ethics and deontology. He has wide-ranging experience in matters involving directors’ and officers’ liability, the management of not-for-profit organizations, construction law and insurance law. Jean-François...

Alain Gascon is a top attorney recognized by Best Lawyers in the practice area(s) of Labour and Employment Law. Alain, who practices law in Laval, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alain is held by other top lawyers in the same geographic and legal practice area.

Jean-Yves Simard is a partner and a member of the board of directors of the firm, who specializes in commercial litigation, bankruptcy and insolvency, extraordinary remedies, and realizing on security. Mr. Simard acts in commercial litigation of all kinds, major insolvency cases, shareholder disputes, securities litigation, liquidation proceedings, injunctions, and cases involving the realization of movable and immovable security. At conferences organized by the Canadian Bar Association, Insi...

Jennifer Nault practises employment and labour law. She advises employers and represents them before various administrative and civil tribunals on collective and individual labour relations. She focuses more particularly on matters regarding interpreting and applying collective agreements, labour standards, employment termination, the certification process, labour conflicts, privacy, human rights and freedoms, workplace discrimination, as well as non-competition and non-solicitation covenants...

Vincent is a member of our Litigation and Dispute Resolution Law Group. Vincent is a passionate and versatile litigator who takes great pride in defending the interests of his clients in several fields and contexts. He is particularly active in commercial and business litigation. He acts regularly in shareholder disputes, transactional litigation and corporate governance litigation. He acts for corporations and their boards of directors, as well as for minority shareholders in the context of ...

Anthony Franceschini is a top attorney recognized by Best Lawyers in the practice area(s) of Class Action Litigation, Construction Law and Product Liability Law. Anthony, who practices law in Montréal, Quebec, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Anthony is held by other top lawyers in the same geographic and legal practice area.

Solomon Sananes practises corporate finance and securities (including both private placements and public financings), mergers and acquisitions, and corporate governance. In corporate financing, he acts in numerous Canadian and Canadian/US cross-border offerings of debt, equity and derivative instruments on behalf of issuers, selling shareholders and underwriters. In mergers and acquisitions, he participates in a variety of significant transactions, acting for both buyers and sellers of public...