Firm Profile

Thompson Dorfman Sweatman LLP

1700-242 Hargrave Street
Winnipeg, MB R3C 0V1

Firm Details

 Thompson Dorfman Sweatman LLP (TDS Law) is one of the leading business, employment, advocacy and dispute resolution law firms in Manitoba, with over 125 years of history in providing legal services to our clients locally, nationally and internationally across more than 20 areas of practice including aboriginal, environmental, natural resources and tax among others. Our team of over 85+ lawyers has the expertise necessary to help clients take advantage of every opportunity and to develop creative solutions to legal challenges confronting their businesses in a timely and cost-effective way.  

Our firm is able to serve clients in English, French, Italian, Portuguese and Spanish.  

As part of the Lex Mundi global network, we can provide our clients with preferred access to more than 21,000 lawyers around the world – all from a single point of contact.  

Individually, each Lex Mundi member firm is a leader in its local market. Collectively, Lex Mundi firms provide global legal resources with unmatched depth and breadth. Working with other Lex Mundi firms, we are able to seamlessly handle our clients’ most challenging cross-border transactions and disputes.

Business Law: Recognized as one of the leading corporate practices in Manitoba, our substantial corporate/commercial experience is available in the areas of mergers and acquisitions, employee takeovers, taxation, financing and securities, banking, franchising, bankruptcy and insolvency and intellectual property.

Advocacy and Dispute Resolution: Our Advocacy and Dispute Resolution group is the largest in Manitoba, having a reputation for skill, experience and success in representing our clients before various tribunals and at all court levels. We are also actively involved in alternative dispute resolution systems and in providing advice aimed at avoiding confrontation and personal appearances. For the cases that must be resolved before a tribunal, we litigate with confidence. We are proud of the reputation we have established with judges, tribunals and opposing lawyers for competence and integrity. Substantial experience is available in the areas of insurance, commercial, personal injury, health, tax, construction, bankruptcy and insolvency, products liability, and competition and trade, regulation. We are able to act immediately in emergency actions such as applications for Mareva Injunctions and Anton Pillar Orders.

Employment Law: Our practice in employment law covers all areas of actual or potential dispute between labour and management in both organized labour and individual circumstances. The breadth and depth of our experience accounts for our long-standing relationship with not only corporate clients but also employee organizations. We have earned recognition for our proficiency in the areas of collective bargaining, labour arbitration, Labour Board regulation, employee dismissal, human rights, pensions, sports, media and entertainment, workplace safety and health, employment standards and Workers Compensation.

Government and Regulatory Groups: We represent a significant number of government agencies, corporations and municipalities. Because of our involvement with both private and public sector clients, the firm has often been involved in projects, including public-private partnerships (P3), in which they have worked together successfully. Our firm has extensive experience with federal and provincial Crown corporations, municipal corporations and professional associations. In addition, a number of our lawyers have developed expertise in environmental law and in the field of utility operations, with particular emphasis on telecommunications, hydro-electric power generation and sale, and natural gas and oil transmission and franchised distribution.


Donald G. Douglas
CEO and Managing Partner

About Our Clients

  1.  Manitoba Hydro
  2. Manitoba Telephone System (MTS)
  3. Boyd Group Income Fund
  4. University of Manitoba
  5. The Toronto-Dominion Bank
  6. Winnipeg Regional Health Authority
  7. HudBay Minerals Inc
  8. HyLife Ltd.
  9. Agrium Inc.
  10. Winpak Ltd.


Mark E. Howe
Client Relations

Firm Practice Areas

  • Aboriginal Law
  • Administrative and Public Law
  • Alternative Dispute Resolution
  • Banking and Finance Law
  • Bet-the-Company Litigation
  • Construction Law
  • Corporate and Commercial Litigation
  • Corporate Law
  • Environmental Law
  • Insolvency and Financial Restructuring Law
  • Insurance Law
  • Labour and Employment Law
  • Leveraged Buyouts and Private Equity Law
  • Natural Resources Law
  • Real Estate Law
  • Securities Law
  • Tax Law

Firm News & Media

Office Locations





Winnipeg, MB

1700-242 Hargrave Street

Winnipeg, MB R3C 0V1



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