Brian O'Callaghan

Jeremy's practice spans work with a range of government and corporate clients. He has acted in claims before the High Court, Federal Court, various Supreme Courts and the Administrative Appeals Tribunal. Jeremy's administrative and regulatory law experience includes: advising Commonwealth agencies in relation to regulatory proceedings, including in relation to options and evidence required for declaratory, civil penalty and injunctive relief in accordance with the Regulatory Powers (Standard ...

Ian has broad experience across diverse jurisdictions and areas of law with a specialisation in commercial litigation, building and construction, and insurance law. He also has experience in professional negligence claims, leasing disputes, and personal injury. Ian is recognised by his peers in The Best Lawyers in Australia list in dual fields of litigation and insurance law. His broad experience, including his regularly acting for both plaintiffs and defendants, enables him to provide a bala...

Elissa acts for Commonwealth government agencies and entities, universities and private sector organisations on employment, workplace relations and safety matters. Her focus is public sector employment and workplace relations. Elissa advises on enterprise bargaining (including drafting, strategy, industrial action and approval challenges), employment litigation (general protections, unfair dismissal, discrimination and bullying), workforce planning and reform, misconduct and underperformance ...

Georgina Adams is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Law, Corporate / Governance Practice, Government Practice, Information Technology Law, Outsourcing Law, Public Law and Telecommunications Law. Georgina, who practices law in Canberra, Australia, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Georgina is held by other top lawyers in the same geographic and legal pr...

Hyans acts for Commonwealth, State and Territory government agencies and commercial clients on procurement, contracts and public law matters. Hyans advises on commercial contracts, corporate governance, statutory interpretation, legislative drafting, regulatory law, administrative law, privacy and FOI matters, and procurement and probity. His practice covers all aspects of government contracting from strategy and tender design through contract award and administration, as well as legal advice...

Rebecca has extensive experience in advising the Commonwealth in relation to workers’ compensation matters. She is fully cognisant of the responsibilities of the Commonwealth in adhering to the Model Litigant Policy and the unique challenges that this can bring. In a previous role Rebecca successfully held the position of National Client Service Manager for Comcare, which, as a significant client, brought enormous responsibility from a business perspective. Rebecca is focussed on delive...

Catherine Coles is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Catherine, who practices law in Canberra, Australia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Catherine is held by other top lawyers in the same geographic and legal practice area.

Melanie acts for Commonwealth government agencies, statutory entities and corporate clients. Melanie's clients operate across the full spectrum of Commonwealth activity. Her clients include Comcover, ATO and Departments including Finance, Defence, Home Affairs, Industry, Attorney-General's and Agriculture. Melanie joined Thomsons in July 2025 as part of the transition of the one of Australia’s premier Commonwealth government practices. Melanie’s practice spans litigation, dispute ...

Sarah acts for Commonwealth Government departments and agencies on procurement, contracting and governance matters. Her client base is primarily the Commonwealth and Commonwealth entities, with a particular focus on defence procurement and capital equipment acquisition. Sarah advises on procurement activities for aviation, land vehicle and maritime assets, governance matters for statutory corporations, contract negotiations, competitive tendering processes and privatisations. She leads contra...

Paul acts for Commonwealth Government agencies, statutory authorities and private sector employers. Paul joined Thomsons in July 2025, bringing with him deep Commonwealth client relationships built over an extensive career. Paul’s practice spans all aspects of employment and industrial relations, WHS governance, administrative law and government procurement. He advises on enterprise bargaining, individual and collective workplace agreements, discrimination complaints, investigations of ...