What my clients say

If any opportunities arise to refer business to you and your firm, I will recommend you very highly. Our business relationship with you has been excellent.



Craig O’Brien is a partner with Nelligan Law.

He works exclusively in civil litigation, with an emphasis on commercial and construction litigation, insurance defence and professional liability litigation and business law.

Craig is the current president of the County of Carleton Law Association.

Craig frequently represents major insurance companies, and has been involved in a variety of insurance claims. These include personal injury litigation, building and construction deficiency and home inspection claims, improper road and sidewalk maintenance claims, environmental spill claims, and occupiers’ liability claims. His practice includes representing insurers in accident benefits, arbitrations, and litigation.

Craig has appeared before the Small Claims Court of Ontario, the Ontario Superior Court, the Divisional Court, the Ontario Court of Appeal, and various administrative tribunals, including the Financial Services Commission of Ontario.

Craig is sensitive to the fact that he is not only protecting his client against claims, but that their professional reputation may also be at stake. He is practical, straightforward, and results-oriented. He avoids being side-tracked, and always aims to get to a result as efficiently and effectively as possible. He is also responsive to his clients’ queries, and is very approachable.

Craig was recognized in the 2021 edition of Best Lawyers for his work in Insurance Law.

Craig loves the outdoors. In summer he goes wakeboarding and water-skiing, and in winter he skis and snowboards as often as he can. He is also a member of local ultimate and volleyball leagues, and has a passion for travel.

  • Call to Ontario Bar (2006)
  • LL.B., University of Ottawa (2005)
  • B.Hum., Carleton University (2001)
Professional Activities and Organizations
  • Canadian Bar Association
  • County of Carleton Law Association - 2020-2021 President
  • The Advocates' Society
  • United Way Campaign Cabinet for the Professional Division
  • College of the Humanities Chapter of the Carleton Alumni Association - President

Practice Groups

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Authored Content

Business Law
Reading time: 3 mins
These last weeks have been tough for Ottawa’s businesses. The coming weeks hold limited promise of improvement. My February 1st edition of The Economist[...]
Business Law
Reading time: 4 mins
The consequences of slips and falls can be serious - who is liable if someone is injured at your office or store? Craig O'Brien has some simple solutions to keep both businesses and their clients safe throughout winter.
Litigation and Dispute Resolution
Reading time: < 1 mins
"Somebody who as broken a contract, is not necessarily a contract breaker." When involved in a dispute, while it an be tempting to bring up past behaviours or actions of the opposing party. However as Craig O'Brien explains, this tactic is not necessarily beneficial in a litigation strategy.

Related Posts

Litigation and Dispute Resolution
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On February 17, the Plaintiffs in the widely reported Ottawa “Freedom Convoy” class action obtained a Mareva injunction freezing assets. [...]
Family Law
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Spouses are 'separated' when one person in the relationship has withdrawn from the relationship without any reasonable prospect of reconciliation or resumption of cohabitation. This means that you can be married and separated at the same time. In fact, in almost all cases, you have to have been separated from your spouse for at least one year before you can divorce. A divorce legally ends the marriage and allows former spouses to remarry.
Business Law
Reading time: < 1 mins
In the latest episode of the Ottawa Business Journal‘s Behind The Headlines podcast, Craig O’Brien explains how rent negotiations can[...]