Declan O'Dempsey specialises in complex and sensitive employment, discrimination, public and regulatory law. His practice includes all aspects of employment law including whistleblowing, the fiduciary duties of agents and directors and injunctions, trade union cases and data protection law. He has been consistently recommended as a leading employment junior by Chambers and Partners for over 16 years.

He was in Homer v West Yorks Chief Constable ; the Heyday case ; intervened for the EHRC in Seldon in the Employment Appeal Tribunal and for Age UK in the Supreme Court and acted in Coleman v Attridge Law. He acted for the Claimants in Bent v Central Manchester University Hospital Trust (concerning the correct construction of the Agenda for Change contracts of NHS staff) and intervened in X v Mid Sussex CAB (the scope of protection against discrimination for volunteers) in the Supreme Court.

Controversial and sensitive cases include Azmi v Kirklees MBC (regarding the Niqab) and the Gurkha Welfare Association pension rights case as well as highly sensitive cases relating to social workers. He was involved in the Public Inquiry into the Personality Disorder Unit at Ashworth Special Hospital. He represented the claimants in the test case concerning caste discrimination, Begraj v Heer Manak . He appeared in Sobhi v Met Police (disability discrimination) and in The Manchester College v Hazel & Huggins (TUPE and constructive dismissal). In 2015 he acted for the theatre figure Terri Paddock against WhatsonStage, and for cricket umpires Willey and Sharp against the ECB.

His discrimination practice includes advising and representing in goods and services cases. Along with Catherine Casserley, Barbara Cohen and Caroline Gooding, he wrote the EHRC's statutory code on Services, Public Functions and Associations . In 2013 he co-wrote the Age discrimination supplement to that Code for the EHRC.

He acts in administrative law cases for individuals and councils, advising on matters affecting councillors, politicians, businesses and public bodies. He has particular expertise in relation to the application of the Equality Duties and is one of a team of 4 drafting the controversial technical guidance (Public Sector Equality Duty Statutory Code) for the EHRC under the Equality Act 2010. In April 2016 he addresses the Association of University Legal Practitioners in Cambridge on their duty under the government's Prevent anti radicalisation duty.

He advised the CRE on Code of Practice on Racial Equality in Employment (2005), and on their Formal Investigation into the Prison Service (2004).

In 2011, with Anna Beale, he co-authored a Thematic Report on Age Discrimination in the European Union for the European Commission. He has an international reputation as an expert on European anti-discrimination law, training lawyers, judges, civil servants and trade unionists in accession and existing member states on this subject most recently giving a speech to the Equinet network of equality bodies from across Europe. Domestically has worked closely with the Law Centres Federation to provide training to law centre workers on the new strands of anti discrimination protection both in employment and in relation to goods facilities and services and public functions.

Here is Declan’s introduction to how to instruct a barrister under the public access scheme.

Chambers & Partners 2025: (Employment) "He picks up cases really quickly and is very reasonable." "Declan knows discrimination law inside out." "Declan has great attention to detail and is really insightful in terms of tactics and strategy."

Legal 500 2025: (Employment) “A resolute advocate who builds good rapport with judges.”

Who’s Who Legal 2024: Recommended for Labour, Employment & Immigration.

Chambers & Partners 2024: "Declan was excellent dealing with unexpected and complex issues and his standard of advocacy was very high. He is also able to manage client's expectations very well." "He is always clear, concise and a safe pair of hands." "Calm, experienced and pragmatic. Declan is very reassuring to clients."

Legal 500 2024: “Declan is very thorough and gets to grips with the issues quickly.”

Who’s Who Legal 2023: Declan O’Dempsey is widely deemed “a safe pair of hands” for complex and sensitive employment matters, with a wealth of experience appearing before the Employment Tribunal and the Supreme Court.

Chambers & Partners 2023: "Declan is a strong advocate who is always across the detail and great with clients." "A very smart and tenacious advocate."

Legal 500 2023: “Declan has a wealth of experience and knowledge of employment law. He is extremely forensic in his approach to advice, and will always search out the unusual argument; and he is a compelling advocate, with an assured approach in tribunal. He is also good at explaining complex issues to lay clients.”

Chambers & Partners 2022: "He picks things up really quickly and he is very down to earth." "He is a safe pair of hands, he is very experienced and he understands how things work."

Chambers & Partners 2021: "He put forward clear skeleton arguments and very clear submissions, and was able to get the judge onto his wavelength." "He knows the law really well."

Legal 500 2021: “Outstanding. Very personable, helpful, and thorough.”

Chambers & Partners 2020: "A formidable advocate who is always amenable and as helpful as he can be." "Very personable and thorough."

Legal 500 2020: "An absolute expert on discrimination law and is great with clients and solicitors."

Chambers & Partners 2019: "Has vast experience across the whole expanse of employment law. He is particularly recognised for his discrimination work and for his handling of equal pay and whistle-blowing claims." "Thorough, to the point and very pleasant." "Approachable and dedicated."

Chambers & Partners:

"Reassuringly experienced and very good with clients."

Known for his "incisive cross examination."

"Knows employment law like the back of his hand.”

He recently impressed with his performance in the ground-breaking Heyday case.

“The claimant's rottweiler."

“Particularly recommended for discrimination cases…"

Clients:

Declan “uses his knowledge to good effect and achieves positive results for clients.”

Member of the Equality and Human Rights Commission panel counsel.

Former member of the Bar Council's Law Reform Committee.

Former vice chair of the Bar Standards Board's Equality and Diversity Committee and of the Bar Council's EDC and now member of the latter.

Member of the Practical Law Company's Employment Law Consultative committee.

Founding member of Halsbury's Law Exchange, legal think tank.

Fee Paid Part Time employment judge.

Discrimination in Employment: a Claims handbook (Legal Action 2013) (see reviews on Amazon.co.uk here and for more information see here)

Law Centres Federation Handbook on Goods Facilities and Services Discrimination (2009),

Age Discrimination Law Handbook (Legal Action 2006),

Employment Law and the Human Rights Act 1998 (Jordans, 2001),

Supperstone and O'Dempsey on Immigration and Asylum

Disability Discrimination: The Law and Practice (Sweet & Maxwell)(praised by Baroness Hale in Malcolm v Lewisham [2008] UKHL 43)).

Thematic report from the European Network of Legal Experts in the non-discrimination field, "Age and Employment" Available at http://74.54.218.82/~migpolgr/news_detail.php?id=189

MA (Cantab) (Philosophy)

Dip Law

• Sobhi v Met Police: using EU law & UNCRPD Declan extended the scope of the concept of disability in UK equality law.

• The Manchester College v Hazel & Huggins: contract harmonisation and TUPE ETO reasons narrowly construed. On the "A Panel" of EHRC counsel.

• Begraj & Anor v Heer Manak Solicitors & Ors (Practice and Procedure : Bias, misconduct and procedural irregularity) [2014] UKEAT 0496/13 (17 June 2014) http://www.bailii.org/uk/cases/UKEAT/2014/0496_13_1706.html

• Manchester College v Hazel & Huggins (EWCA)

• Lockwood v DWP & Cabinet Office (EWCA)

• Sobhi v Met Police (EAT)

• The Manchester College v Hazel & Huggins (EAT)

• X v Mid Sussex CAB

• Homer v West Yorks Chief Constable (SC)

• R (ota Brigade of Gurkhas Welfare Society) v MOD (EWCA)

• Seldon v Clarkson Wright & Jakes (SC)

• Bent v Central Manchester University Hospital Trust http://www.bbc.co.uk/news/uk-england-manchester-17147235)

• R (on the application of the Incorporated Trustees of the National Council on Ageing (Age Concern England)) v. Secretary of State for Business, Enterprise and Regulatory Reform HC and CJEU

• Azmi v Kirklees MBC (EAT)

• R (Kaur & ors) v Ealing Borough Council (HC)

• CPL Distribution Ltd v Todd (EWCA)

• Mugford v Midland Bank Plc (EAT)

• Goodwin v Patent Office (EAT)

• Shawkat v Nottingham City Hospital NHS Trust (EWCA)

• High Table v Horst (EWCA)

• Higham v Horton (EWCA)