Organisational Structure

Executive Team

The Chief Executive Officer, together with four Assistant Chief Executives (ACEs), make up the Executive team who are responsible for managing the implementation of strategy in line with the Authority’s statutory responsibilities. The Chief Executive reports to the Board of the Authority.


The Chief Executive of the Health and Safety Authority is Conor O’Brien, an experienced leader with over fifteen years working in senior executive roles. He has worked in both the public and private sectors in the insurance, banking, technology and services industries. Prior to working in his role in KBC Bank Ireland, he was the Chief Executive of the Personal Injuries Assessment Board.

Conor O'Brien,
Chief Executive Officer

Each Assistant Chief Executive has responsibility for one of the divisions as set out below.


The Occupational Safety division has responsibility for the development and implementation of policy across specific sectors such as construction, manufacturing, transport as well as national inspection and investigation teams for occupational safety and health. The division also incorporates the Authority’s legal team who provide legal advice and handle prosecutions via the Office of Public Prosecution.

Mark Cullen,
Assistant Chief Executive, Occupational Safety

dr-adrienne-duff1The Occupational Health division has responsibility for the development and implementation of policy as well as inspections in health and social care, agriculture, and across other sectors in a range of occupational health and hygiene topics. It also has responsibility for the delivery of the Authority’s Enterprise and Employee supports such as BeSmart and HSAlearning and the delivery of the Authority’s new occupational medical functions.

Dr Adrienne Duff,
Assistant Chief Executive, Occupational Health

yvonne-mulloly-websiteThe Chemicals and Industrial Products division has responsibility for international, EU and national legislation for  the safe manufacture, use, transport, import, trade and sale of chemicals and industrial products for industrial and professional users as well as consumers.

Yvonne Mullooly,
Assistant Chief Executive, Chemicals and Industrial Products

nullThe Corporate Services division provides the support structure of the Authority on which all other divisions and sections rely to carry out their functions and roles. The division has responsibility for people and organisational development, finance, ICT, facilities, communications, legislation and corporate governance, procurement, strategic management including risk management, Freedom of Information, quality assurance and internal audit.

Dr Kevin De Barra,
Assistant Chief Executive, Corporate Services

In addition to above, the Irish National Accreditation Board reports directly to the Chief Executive.

The Irish National Accreditation Board (INAB) provides the national accreditation service for Ireland. INAB was established in 1985 and is a Committee of the Health and Safety Authority under legislation (Safety, Health and Welfare at Work Act 2005, as amended by the Industrial Development (Dissolution of Forfás) Act 2014. Accreditation is the formal recognition that an organisation is competent to perform specific processes, activities, or tasks in a reliable credible and accurate manner.