About TWA Law

TWA Law is a Toronto litigation firm with an office at Bay and Bloor Streets. Managing partner Tom Arndt has more than 20 years of experience in class actions, complex commercial litigation, and general counsel work for corporate and individual clients, and has argued matters at every level of court in Ontario, as well as in national class actions. Arndt earned a B.Sc. (Hons.), cum laude, from the University of Guelph in 1992, went on to a J.D. from the University of Windsor Law School in 1998, and was called to the Bar of Ontario in 2000.

The firm is a member of Consulegis and Interleges, international networks of legal and consulting firms that connect it with counsel outside Canada. Its litigation work covers shareholder and business partner disputes, franchise litigation, construction claims, and professional negligence matters, in addition to the class actions that make up a significant part of the firm's docket, handled on both the plaintiff and defence side.

Milestones & recognition

  • Tom Arndt earned a B.Sc. (Hons.), cum laude, from the University of Guelph in 1992.
  • Arndt received a J.D. from the University of Windsor Law School in 1998 and was called to the Bar of Ontario in 2000.
  • In 2021, TWA Law received the Class Action Lawyer of the Year Award from International Advisory Experts.

In the community

  • Tom Arndt has volunteered with Pro Bono Law Ontario, working on its Law Help pilot project and its Child Advocacy Project.
  • Arndt served as a past director of Willowdale Community Legal Services, a community legal aid clinic.
  • Arndt served as a past director of the Sir William Campbell Foundation, which preserves Campbell House, an 1822 heritage building that is now a museum in downtown Toronto.
  • Arndt has supervised and judged upper year moot competitions at the University of Toronto.
  • Arndt has served as duty counsel for Law Society of Ontario discipline tribunal hearings.

Good to know

A person using a wheelchairWheelchair accessible

The neighbourhood

TWA Law's office is in a 12 storey building at the corner of Bay and Bloor Streets in Toronto. Bay Street is shorthand for the country's banking and finance industry, but that reputation centres on the blocks around Bay and King, well south of the firm's address. The stretch near Bloor sits instead among the shops of the Mink Mile retail strip.

Frequently asked questions

Does TWA Law handle class actions?
Yes. The firm has acted for both plaintiffs and defendants in class actions, including a case that went to the Supreme Court of Canada, Babstock v. Atlantic Lottery Corporation.
My company is being sued and the outcome could put the whole business at risk. Can TWA Law help?
The firm describes this kind of high stakes litigation, where a company's survival can depend on the outcome of a single case, as enterprise risk litigation, and has represented clients in disputes of that scale, including a matter for toll highway operator 407 ETR against the Government of Ontario.
Can TWA Law act as ongoing outside counsel for my company?
Yes. The firm provides general counsel services to corporate clients on an ongoing basis, in addition to its litigation and class action work.
Does TWA Law handle disputes between business partners or shareholders?
Yes. The firm acted for the successful party in a shareholder dispute, Jundi v. Ouaida, in which the courts made findings against the opposing party over attempts to conceal assets during bankruptcy proceedings.
Is TWA Law involved in franchise law?
The firm represented a group of Tim Hortons franchise owners in litigation against The TDL Group after the chain's parent company was sold, a case that led to a precedent setting litigation funding order and was reported by CBC News.
Where is TWA Law located and how do I get in touch?
TWA Law's office is at 1200 Bay Street in Toronto. The firm can be reached by phone or through the contact form on its website.

Where to find them

1203-1200 Bay Street, Toronto, Ontario, Canada M5R 2A5 · 416-488-2000

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Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗