Thomas P. "Tom" O'Leary K.C.

Beth Younggren is a member of Dunphy Best Blocksom LLP ’s civil litigation and dispute resolution team. She joined the firm in 2015 after articling with and then working as associate counsel at a large multi-national law firm in its civil litigation group. Beth maintains a diverse commercial litigation practice, and specializes in advising clients with respect to construction litigation, including builders’ liens, contractual disputes, especially in the oil and gas and real estate...

Darren Hueppelsheuser’s practice concentrates on income tax law, with an emphasis on the tax aspects of financing and transaction planning for corporations and partnerships in both private and public transactions. Mr. Hueppelsheuser also advises on international tax structuring of Canadian inbound and outbound investments and the tax aspects of debt reorganizations and financial restructurings in creditor proceedings. Mr. Hueppelsheuser regularly presents on tax matters and has written ...

Jack maintains a broad commercial litigation practice with a focus on insolvency and restructuring, debtor-creditor remedies, real estate, banking, fraud, and energy-related matters. He advises companies, directors, shareholders, lenders, and accounting professionals on all aspects of insolvency and restructuring proceedings under the Companies’ Creditors Arrangement Act and the Bankruptcy and Insolvency Act , both in Canada and in cross-border contexts. Jack also has significant experi...

Mat Wirove is an accredited mediator and reputable family lawyer, recognized for his proficiency in court. With a prior background in civil litigation, Mat's versatile legal experience equips him to tackle a broad spectrum of family law matters with skill and efficiency. A Transparent, Client-Centred Approach Mat adopts a policy of openness and honesty with his clients, keeping them thoroughly informed about their case as it progresses. He understands the unique complexities of every situatio...

Colin is a partner in the Calgary office of Lawson Lundell. He is a member of the firm’s Business Law, Corporate Commercial, Corporate Finance & Securities and Mergers & Acquisitions Groups. His practice covers a broad range of commercial transactions, including the structuring and implementation of share and asset acquisitions, mergers, financings, and corporate reorganizations involving strategic acquirers, investors, vendors, entrepreneurs, family business owners, family offi...

Teri Treiber provides advice and representation to employers in all areas of labour and employment law. She assists employers with a variety of issues, including employment agreements, collective agreements, workplace policies, human rights, employment standards, privacy, workplace investigations, performance management, employee discipline, terminations, wrongful and constructive dismissal, grievances and arbitrations, and restrictive covenants.

Blake Hafso is a top attorney recognized by Best Lawyers in the practice area(s) of Labour and Employment Law. Blake, who practices law in Calgary, Alberta, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Blake is held by other top lawyers in the same geographic and legal practice area.

Christiana joined Parlee McLaws’ Calgary office as an Associate in 2014 upon the completion of her Articles with the firm, having been previously admitted to the practice of law in New York State in 2010. She is an experienced trial and appellate litigator with a practice focused on civil litigation and administrative law, specifically in the areas of energy, construction, aviation, municipal governments, and insurance. Christiana has represented clients before the Alberta Court of Just...

Tanya A. Frizzell is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Personal Injury Litigation. Tanya A., who practices law in Calgary, Alberta, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tanya A. is held by other top lawyers in the same geographic and legal practice area.

Gavin Fitch is an award-winning lawyer and K.C. working in environmental, regulatory, energy permitting, and Indigenous law. He’s a respected and trusted advisor who provides sound, practical advice geared towards keeping his clients out of the hearing room. When necessary, however, he is a strong and fearless advocate, whether in negotiations or in a courtroom. His clients include developers, energy producers, environmental monitoring agencies, governments and landowners. For each indi...