About

Our Team

We are a husband-and-wife team with over 20 years of combined legal experience. Practicing out of our office in Burlington, Ontario, we provide a personal, accessible, and reliable approach to the practice of law that ensures you feel heard and that you understand the legal process.

Kosinska O’Shea Law

Family Law & Litigation

Dorothy Kosinska

Dorothy has been practising exclusively in family law for over a decade. She started her articles at a boutique law firm in Toronto, specializing in family law. She continued her practice exclusively in family law with a litigation focused family law firm in Burlington, where she gained extensive experience appearing before the Ontario Court of Justice and the Superior Court.

She obtained her Collaborative practice certification in 2020 and is an advocate for finding non-destructive resolutions for separating families. Her broad experience, both inside the court process and in alternative dispute resolution processes gives her the essential background to effectively guide her clients through the most appropriate streams to help bring about the best resolution, tailored to their unique circumstances.

Dorothy is a member of Office of the Children’s Lawyer legal panel, representing children to ensure that they are given a voice and empowered during a difficult time in their lives.  Through this work she is trained to understand the needs of children going through separation and is able to guide parents to be child-focused. 

She is involved in the Halton community through the Halton County Law Association mentorship program, where she provides mentorship and guidance to family lawyers seeking support, and she also sits on the Halton County Law Association board.

Dorothy is a co-author for two of Thomson Reuters, Carswell’s loose-leaf publications: “Domestic Contracts” and “Parenting Law and Practice in Canada.” These are resources used by lawyers throughout Canada for legal research and precedents. 

Dorothy is accredited by the Ontario Association of Collaborative Professionals, and is a member of the Collaborative Practice Association of Hamilton/Halton. She is also a member and has served on the board of the Halton County Law Association. Dorothy is continually involved with a number of initiatives, including having been a legal presenter in Halton’s family court Mandatory Information Program, and spearheading a high-school family law education program in conjunction with the Ontario Justice Education Network.

Prior to practicing law, Dorothy obtained an Honours Bachelor of Arts in English from the University of Toronto, graduating with distinction. While at law school, Dorothy worked as an editor in Carswell Thomson Reuters’ legal division. She contributed both research and writing to Carswell family law publications.

Dorothy is a native Polish speaker and is happy to help those who need services in Polish:

Służe Państwu pomocą prawną również w języku Polskim

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Real Estate & Estate Planning Law

Grant O’Shea

Before opening his law practice, Grant O’Shea gained his experience in a wide range of legal practice areas at one of Hamilton’s largest full service law firms. Realizing his true passion was assisting people outside of the courtroom, Grant focused his practice in the areas of real estate and wills and estates law. After practicing as sole practitioner for over 5 years, he is excited to team up with his wife, Dorothy Kosinska, and expand the firm’s practice areas to include Dorothy’s extensive expertise in Family Law and enable the firm to provide services in all typical areas where family life intersects with the law!

Grant grew up in Burlington, Ontario and is thrilled to be building his practice and assisting people in his home town and the greater Halton area. When he is not in the office, Grant enjoys running, photography, and going hiking with his family at the many great parks and conservation areas that Halton has to offer!

Kosinska O’Shea Law

Get In Touch

1100 Burloak Drive
Suite 300
Burlington, ON L7L 6B2
T: 289-266-1642
F: 289-816-5001
info@koshlaw.ca

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