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John Hayes

  • Firm: Constantine Law
  • Practice Area: Labour and Employment
  • Country: England, United Kingdom
  • Email: [email protected]
  • The Clubhouse, 50 Grosvenor Hill, London, England, W1K 3QT.

About John Hayes

Constantine Law was founded by John Hayes, one of London’s leading employment lawyers. John advises UK corporates in the financial services, employment agencies, retail and construction sectors.

He is also one of London’s leading solicitors in restrictive covenant disputes and an experienced High Court practitioner. He has obtained injunctions for a range of leading corporate clients in the High Court in recent years. John has a very solutions-orientated and commercial approach.

John qualified as a solicitor in 2001 and as a barrister in 1993. He is skilled advocate and has years of experience litigating in the Employment Tribunal and the Employment Appeal Tribunal in unfair dismissal, whistleblowing and equal opportunities cases.

John is a member of the American Bar Association and works regularly with American clients.

John’s client base is entrepreneurial and this prompted him to set up Constantine Law in 2015. The firm is ranked in the Legal 500. Prior to this, John headed the London employment team of a large, national law firm.

John has particular expertise in business protection and works closely with some of the leading barristers in the field to protect his clients’ commercial interests. He has great experience in the area of a-typical working, including consultancy agreements, IR35, CIS, and the tax implications of each. He works closely with leading accountants to provide joined up solutions for his clients.

John is a member of the Employment Lawyers’ Association (ELA) and the leading Irish entrepreneurial organisation, the Irish International Business Network (IIBN). He is also an active member of the Institute of Directors (IOD). John regularly appears across television and print media, contributing to, among other publications, the Huffington Post, and to leading trade magazines on employment matters.

John is married to Ceri, with whom he has three children. He is a member of the Hampstead Triathlon Club and raises money for charity through Olympic distance triathlons. His other main passions are public affairs (John has previously stood for Parliament) and the London cultural scene.

Q&A With John Hayes

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