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O’Neill Associates’ boutique practice offers client focused knowledge and resources in Labour and Employment Law. Our focus is on helping you find solutions for your dynamic workplace and creating Human Resource frameworks that work, allowing you to avoid conflict in the first place. We provide effective representation and consultation, protecting your rights and interests while helping you navigate through complex legal frameworks. We also assist with arbitration and internal mediation processes. We do everything we can to find fair and equitable solutions for you.

O’Neill Associates also provides consultation services in matters including Human Resource enquiries, legal options in the face of current or anticipated claims, and other labour and employment matters. The working world is fast paced and you may need to make a decision today, not wait for a report next week. We provide timely and accurate advice to help you make those decisions.

Clients in Northern Ontario trust O’Neill Associates for:

  • Experience and knowledge
  • Accessibility and rapid response
  • Strong and effective representation
  • Candour and creativity.

O’Neill Associates is based in the heart of Thunder Bay and offers representation and counsel unique to Northern Ontario, serving clients between Kenora and Sudbury.



Warren Mouck

Warren Mouck
  • Labour Relations & Employment Law
  • Administrative Law (including claims before the Human Rights Tribunal of Ontario)
  • Human Resource Planning and Implementation

Warren Mouck is a workplace lawyer who understands business.  His varied work background, from the warehouse floor to the retail counter to the Human Resources Department, makes him an intuitive and effective advocate in the Courtroom.

Warren provides strategic legal advice and representation to individuals, businesses and institutions on workplace law.  He is experienced in litigating wrongful dismissal claims, and has represented clients at all levels of Court in Ontario, including the Ontario Court of Appeal. Warren has conducted hearings at the Ontario Human Rights Tribunal, as well as matters before the Ontario Labour Relations Board, including union certification, employment standards and occupational health & safety matters.  Warren has industry experience in Human Resource Management, and provides practical advice on all aspects of the employment relationship.  He regularly conducts mediations, negotiates fair settlement terms, and advises on tax consequences of settling employment disputes.  Warren drafts employment agreements, and is knowledgeable in the areas of executive compensation and restrictive covenants.

Outside of the office, Warren’s hobbies include cycling, sailing Lake Superior, and skiing.  He has frequently returned to his Alma Mater, the Bora Laskin Faculty of Law, to speak about professionalism and substantive legal issues.  Warren’s talents also extend to barbershop quartet singing and his aspiring mastery of culinary arts.

Community Involvement

Board Member, Magnus Theatre
Annual Chair, TB Law Association Labour and Employment Continuing Legal Education
Volunteer, Dew Drop Inn




Our People