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Formation of the employment contract

This guide explains how employment contracts are formed, covering job offers, acceptance, consideration, intention to create legal relations, and how mistakes or misrepresentation can affect enforceability.

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By Sue Johnstone
Updating author: Lilia Dangi

Understand how employment contracts are formed, from making a valid job offer to identifying binding contract terms. This guide explains the legal principles employers need to know when creating, agreeing, and documenting employment contracts.

  • Job offers can be in writing, be oral or made by conduct.
  • The person making the offer should have authority to do so.
  • Offers that are subject to conditions are incomplete until the condition is satisfied.
  • Acceptance must be by a positive act.
  • Promises made during an interview may be legally binding.
  • Each party must get something from the contract – this is “consideration”.
  • If the parties intend that the contract shall not be legally binding it cannot be enforced in the courts.
  • Mistakes, misrepresentation and illegality all affect the extent to which the contract can be enforced.
  • The terms of the contract are fixed when the contract is made.
  • Contract terms should be put in writing.

In this guide, learn about:

  • The offer
  • Conditional offers and references
  • Acceptance and counter offers
  • Collateral contracts
  • Consideration
  • The contract as a compromise but with flexibility
  • Intention to create legal relations
  • Mistakes
  • Misrepresentation
  • Illegality
  • Identifying the contract terms
  • The importance of written terms
  • Future developments

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About the author

Lilia Dangi
Legal Editor, Brightmine

Lilia joined the Employment Law and Compliance team as a Legal Editor in March 2025.

Lilia has over 10 years’ experience in HR, with a strong background in employment law, compliance, and governance. She has worked across major organisations including Deloitte, Santander, and Unilever, advising on complex employee relations matters, immigration and change management.

Lilia also brings experience as a CIPD tutor, delivering modules on employment law and workforce planning. She holds a Law degree, a Law Masters in Corporate Governance, and is a certified Company Secretary and CIPD Associate.

Connect with Lilia on LinkedIn.

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