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Guide to varying terms and conditions of employment

£12
Word count
Template words
280
Reading time
Reading time
5 mins

A manager’s guide showing how to propose and implement contract variations fairly and compliantly with UK employment law.

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What is a Guide to varying terms and conditions of employment?

This guide provides managers with practical, step-by-step instructions for proposing, consulting on, and implementing variations to employee contracts, ensuring fairness, transparency, and compliance with UK law.

It highlights the importance of thorough documentation, effective employee engagement, and risk mitigation, recognising that contract variations are complex but achievable.

By following this guide, managers can implement changes while protecting employee rights, maintaining trust, and reducing the likelihood of disputes or legal challenges.

Applicable legal jurisdictions
In which jurisdictions can this guide be used?
Great Britain & NI (United Kingdom), Worldwide

Sequence

This step
Guide to varying terms and conditions of employment
Next step
Letters
Contract variation proposal letter template

If you wish to vary an employee's contract / terms and conditions, issue this model letter template as a proposal of the variation, and to request a meeting to discuss.

Timings

Step Description Responsibility Timing
1 Identify Need for Variation: Determine the reason for the proposed contract change and potential impacts. Prepare a written proposal outlining the variation and business rationale. Manager / HR Day 1
2 Issue Consultation Letter: Send the formal letter to the employee explaining the proposed change, consultation process, and invite them to a meeting to discuss. Include time for written feedback. HR / Manager Day 1–2
3 Consultation Meeting: Hold a formal discussion with the employee to explore the proposal, consider alternatives, and gather feedback. Document the meeting carefully. Manager / HR Within 3–5 days of letter issuance
4 Review Feedback and Decide: Assess the employee’s input, consider adjustments, and determine the appropriate course of action. Prepare a formal outcome letter summarising the decision. Manager / HR By Day 7
5 Implement Agreed Variation / Outcome Options: Possible outcomes include:
  • No change: The original terms remain.
  • Original change: Proceed with the initially proposed variation.
  • Varied change: Implement a compromise or alternative variation agreed during consultation.
  • No agreement / fire & rehire: If no agreement is reached, a dismissal and re-engagement under new terms may be considered in line with legal advice.
Update the contract as applicable, obtain employee signature, and retain all documentation.		 HR / Manager Following outcome letter issuance

Compliance

United Kingdom

  • Employment Rights Act 1996 – governs contractual rights and protections.

  • Equality Act 2010 – ensures variations do not discriminate against protected groups.

  • Working Time Regulations 1998 – affects changes to working hours or patterns.

  • ACAS Code of Practice on Disciplinary and Grievance Procedures – informs consultation and fair process.

  • Data Protection Act 2018 / UK GDPR – ensures documentation and personal data handling complies with law.


Other territories

Consult your jurisdiction's employment legislation or labor laws to ensure compliance with the template. Review the language for local precision.

Guide to varying terms and conditions of employment

Varying an employee’s contract is a sensitive and structured process. This guide provides step-by-step instructions for proposing, consulting on, and implementing changes to terms and conditions, ensuring fairness, transparency, and compliance with UK employment law.

General Principles

  • Fairness: Proposed variations must be reasonable, justified, and comply with employment law.

  • Consultation: Employees must be fully consulted, in line with ACAS guidelines.

  • Documentation: Record all communications, meeting notes, and decisions to demonstrate procedural fairness.

  • Risk Mitigation: Consider potential grievances, claims for constructive dismissal, or discrimination.

Step-by-Step Guidance

  • Identify the need for change and assess impact on the employee.

  • Review legal and policy implications to ensure compliance with employment law.

  • Prepare a detailed proposal outlining the change, rationale, benefits, and mitigations.

  • Consult with the employee and document their feedback, exploring alternatives.

  • Engage HR/legal guidance to reduce risk.

  • Document the outcome, noting agreement, refusal, or further consideration.

  • Implement changes, update the contract, and provide a signed copy.

  • Monitor and review to ensure changes work in practice without detriment.

Additional Guidance

  • Recognise that contract variations are complex but achievable.

  • Consider timing, notice periods, and employee consent.

  • Maintain transparency and communication to build trust.

  • Understand employee rights and protections.

  • Document all steps to demonstrate fair process.

Supporting Tips

  • Prepare for potential pushback and explain the business rationale clearly.

  • Ensure HR is involved early.

  • Use written communication to supplement meetings.

  • Train managers in consultation and negotiation techniques.

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guide to varying terms and conditions of employment