About Leo J. Dillon Professional Corporation

Leo J. Dillon Professional Corporation is a small Toronto firm that focuses only on workplace injury claims. The practice represents injured workers before the Workplace Safety and Insurance Board (WSIB) and the Workplace Safety and Insurance Appeals Tribunal (WSIAT), and it also takes on Canada Pension Plan disability claims. Its office is on the fourth floor of 845 St. Clair Ave. W., on the stretch of St. Clair Avenue West that runs through the Wychwood Heights business strip in midtown Toronto.

Founder Leo J. Dillon holds a B.A., an M.A., and an LL.B., and the Law Society of Ontario has certified Dillon as a Specialist in Workplace Safety and Insurance Law, one of only 12 lawyers in the province with that certification. Dillon has more than 30 years of experience representing injured workers in WSIB matters and, as of March 2020, had appeared in 1,623 WSIAT decisions. The firm represents only workers and says it has never acted for an employer, and its caseload runs from physical injuries and repetitive strain conditions to occupational disease and workplace related mental health claims such as post traumatic stress disorder.

Practice areas

Not listed

Milestones & recognition

  • The Law Society of Ontario has certified founder Leo J. Dillon as a Specialist in Workplace Safety and Insurance Law, one of only 12 lawyers in Ontario with that certification.
  • As of March 2020, Dillon had appeared in 1,623 decisions at the Workplace Safety and Insurance Appeals Tribunal.

Good to know

A rainbow pride heartLGBTQ+ friendlyA laptop showing a video callVirtual appointments

Fees & payment

A clipboard with a speech bubble and a no-charge dollar coinFree consultation

Certified Specialists

A designation granted by the Law Society of Ontario, not a self-declared area of focus.

The neighbourhood

The firm's office sits on the section of St. Clair Avenue West that the Wychwood Heights Business Improvement Area, running between Bathurst Street and Christie Street, calls the heart of multiculturalism and the arts, a corridor of independent shops and restaurants rather than a chain strip. The wider neighbourhood is Humewood-Cedarvale, which took shape as part of York Township in 1850 and earned the local nickname 'the Woods' because so many of its streets, Wychwood, Humewood, Cherrywood, Valewood, and others, end in wood. That mixed, multicultural character along St. Clair West fits a firm whose published client testimonials describe getting help in Punjabi, Russian, and Chinese as well as English.

Frequently asked questions

Does Leo J. Dillon Professional Corporation represent employers as well as injured workers?
No. The firm says it represents only injured workers and has never acted for an employer in a WSIB or WSIAT matter.
What kinds of workplace injuries does the firm handle?
Its practice covers physical injuries such as fractures, burns, and repetitive strain conditions like carpal tunnel syndrome, along with occupational diseases and workplace related mental health claims, including post traumatic stress disorder and traumatic mental stress.
I think I got sick with COVID-19 at work. Can the firm help?
The firm offers a free consultation to evaluate whether a COVID-19 infection was work related and whether it led to short term or ongoing health effects.
Does the firm handle Canada Pension Plan disability claims in addition to WSIB matters?
Yes. Alongside WSIB and WSIAT appeals, the firm takes on CPP disability claims.
Do I need to speak English to get help from the firm?
Not necessarily. Client testimonials posted on the firm's site describe team members communicating with clients in Punjabi, Russian, and Chinese.
Where is the firm located and how do I reach it?
The office is on the fourth floor of 845 St. Clair Ave. W. in Toronto. It can be reached at 416-652-6446, by email at mailroom@leodillon.ca, or Monday to Friday from 9 a.m. to 5 p.m.

Where to find them

4th Fl., 845 St. Clair Ave. W., Toronto, Ontario M6C 1C3 · 416-652-6446

Similar firms in City of Toronto

Thang Tax Law

1 lawyer

Thang Tax Law is a Toronto tax law boutique focused on GST/HST and other sales taxes, tax audits and assessments, tax appeals, and customs and trade. The firm was included in the 2025 edition of Best Law Firms - Canad…

Tax LawTax Law

Ibitoye Law

1 lawyer

Ibitoye Law Office is a Toronto law firm serving the Greater Toronto Area and nearby parts of Ontario in real estate transactions, family agreements, and wills and estates. The firm also offers notary services and a f…

Real Estate LawReal Estate LawFamily LawFamily LawWills, Estates & TrustsWills, Estates & TrustsNotary & Commissioner ServicesNotary & Commissioner Services

The MacLeod Law Firm is a Canadian labour and employment law firm that practises only workplace law, with the motto 'All We Do is WORK.' It acts for both employees and employers on the full range of workplace matters,…

Employment & Labour LawEmployment & Labour Law

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