Firm Profile

Koskie Minsky LLP

20 Queen Street West, Suite 900
Box 52
Toronto, ON M5H 3R3

Firm Details

The law firm of Koskie Minsky has established a unique reputation and position within the Canadian legal community as a firm of skilled counsel providing highly experienced and effective legal services to both public and private sector clients.

Widely acknowledged as one of Canada's pre-eminent firms in the areas of Class Action Litigation, Trade Union Labour Law, Employment Law, Civil Litigation and Pension & Benefits, Koskie Minsky continues to build a flexible, multi-faceted practice.

Focussed on the needs of clients, we remain committed to providing authoritative and innovative counsel, cost-effective solutions, and client service of the highest possible quality. Koskie Minsky provides counsel in a wide variety of areas including:

Administrative Law
Class Actions
Commercial Disputes and Commercial Based Litigation
Construction Law
Employment Law
Human Rights and Equity Issues
Occupational Health and Safety
Pension and Benefits Law
Pension and Venture Fund Investments and Administration
Professional Malpractice and Insurance Litigation
Real Estate Litigation
Union-Side Labour Law
Workplace Safety and Insurance Board Issues

Koskie Minsky maintains a small-firm atmosphere and team-oriented practice. With the depth and breadth of knowledge and skill at our disposal, we can quickly assemble a professional team to suit the precise needs of each client. Our clients benefit from ongoing access to our skilled legal professionals, over 45 partners and associates, an experienced support staff, comprehensive research and litigation support.

Koskie Minsky devotes substantial resources to continuous monitoring and analysis of legal and public policy issues, which information is shared with clients through seminars, newsletters and training programs. The firm has a rich tradition of ongoing public and community service, providing input and counsel to various government and professional bodies. In addition, members of our firm hold leadership positions in the Law Society of Upper Canada, the governing body of Ontario's legal profession, and other professional associations. Most of the firm's partners have been ranked by the Best Lawyers organization as top practitioners in their respective fields.

The Student Program at Koskie Minsky provides students with the unique and invaluable opportunity to obtain experience in class actions, labour law, civil litigation and pensions and benefits law.

Koskie Minsky takes great pride in attracting and retaining individuals who are the best in their field. We have a friendly firm culture and a wonderful internal support network with a competitive benefits package.


Michael Mazzuca
Managing Partner


Jonathan Ptak
Department Head - Class Actions
Laurie Kent
Department Head - Labour
Demetrios Yiokaris
Department Head - Litigation
George Dzuro
Department Head - Pension

Firm Practice Areas

  • Class Action Litigation
  • Corporate and Commercial Litigation
  • Employee Benefits Law
  • Insurance Law
  • Labour and Employment Law
  • Legal Malpractice Law
  • Workers' Compensation Law

Office Locations





Toronto, ON

20 Queen Street West, Suite 900

Box 52

Toronto, ON M5H 3R3



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