Louise O'Byrne

Louise O'Byrne | Employment Law | Compliance & Policy | Arthur Cox


Louise has a broad advisory, litigation and transactional practice covering all aspects of employment law both contentious and non-contentious. Louise provides commercial and solutions focussed advice to a wide range of clients to include clients in the financial services, manufacturing, retail, technology, energy, pharmaceutical and healthcare sectors.

Louise advises and represents employers in all types of employment disputes, including unfair dismissal, employment injunctions, occupational stress and bullying claims, transfer of undertakings fixed term and part time work and discrimination claims. She regularly appears for clients in the Workplace Relations Commission, the Circuit Court, the High Court, the Court of Appeal and the Supreme Court. Louise has particular expertise in advising on the employment aspects of corporate transactions and outsourcings.

Louise is a member of the Arthur Cox Health and Safety Group. She is also a CEDR Accredited Mediator.


Louise’s recent experience includes:

  • Advising a global multinational company on a large scale collective redundancy process to include complex selection and potential redeployment issues;
  • Defending a client in respect of criminal prosecution arising from a fatal accident in the workplace;
  • Defending multiple breach of contract claims in the High Court in relation to the application of trustee discretion;
  • Defending a class of deemed employment claims for a large multinational client engaging resources on a consultancy/contract for services basis; and
  • Representing clients before the Social Welfare Appeals Office in respect of matters relating to social insurance classification.


  • Chartered Institute of Personnel Development
  • Employment Lawyers Association of Ireland
  • European Employment Lawyers Association
  • Health and Safety Lawyers Association of Ireland
  • Women’s Executive Network (WXN)