Recognized in Best Lawyers since 2025 
David Tsai’s responsiveness and strategic thinking has earned him the reputation of trusted advisor for management-side clients. He prides himself on providing practical and timely advice on a wide range of labour and employment law matters.
David’s practice spans unionized and non-unionized workplaces for both federally and provincially regulated employers. He has specialized expertise in advising clients on discipline and discharge, employment standards, occupational health and safety, workplace safety and insurance, collective bargaining, human rights, and wrongful dismissal matters. David is known for being proactive in helping clients interpret federal and provincial legislation and assisting them with the development of strategic workplace policies and procedures. David also has extensive experience advising clients on the labour and employment issues arising from corporate reorganizations and mergers and acquisitions.
David has represented clients before a variety of courts and tribunals including boards of arbitration, the Ontario Labour Relations Board, the Canada Industrial Relations Board, the Human Rights Tribunal of Ontario, and the Ontario Superior Court of Justice.
