This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Learn the key points of the ACAS Code of Practice for dismissals in England and Wales. Discover how tribunals assess compliance, what constitutes fair procedures, and practical steps for employers and employees to ensure lawful and reasonable dismissals.

The ACAS Code of Practice on Disciplinary and Grievance Procedures is a crucial framework for employers and employees in England and Wales. While it is not legally binding, tribunals give it significant weight when assessing unfair dismissal claims. Adherence to the Code can reduce the risk of financial penalties, strengthen the fairness of dismissal procedures, and help both parties understand their rights and obligations.
Purpose of the ACAS Code
The Code sets out practical guidelines for:
- Handling disciplinary issues
- Managing grievances
- Conducting dismissals fairly and transparently
Tribunals consider whether employers followed the Code when determining compensation or liability. Failure to comply may lead to an increase in compensation by up to 25% if the dismissal is deemed unfair.
Key Principles in Dismissal
1. Clear and Transparent Procedures
Employers should have written disciplinary policies available to all staff. Key points include:
- Explaining the standards of behaviour and performance expected
- Outlining the steps involved in disciplinary action
- Notifying employees of alleged issues clearly and promptly
2. Reasonable Investigation
Before dismissing an employee, employers must carry out a thorough and impartial investigation. This involves:
- Gathering all relevant facts and evidence
- Interviewing witnesses and the employee concerned
- Documenting findings to support decisions
3. Right to a Fair Hearing
Employees must have an opportunity to:
- Respond to allegations
- Present evidence or witnesses
- Be accompanied by a colleague or trade union representative
4. Proper Decision-Making
Dismissal decisions should be:
- Based on facts gathered during the investigation
- Free from bias or discrimination
- Communicated in writing, with clear reasons for the decision
5. Right of Appeal
Employees should be allowed to appeal against dismissal or disciplinary sanctions. The appeal process should:
- Be conducted by an impartial manager or panel
- Consider new evidence and procedural fairness
- Result in a written decision
Practical Guidance for Employers
- Document everything: Keep detailed records of investigations, hearings, and communications.
- Train managers: Ensure all staff involved in disciplinary procedures understand the ACAS Code.
- Communicate policies clearly: Provide staff with easy access to disciplinary and grievance procedures.
- Act promptly: Delays in addressing issues can affect perceptions of fairness.
- Seek advice: Employment law specialists can help interpret the Code and apply it correctly in complex situations.
Impact on Tribunal Decisions
Tribunals use the ACAS Code to assess whether dismissal was fair and reasonable. Key considerations include:
- Whether the employer followed a consistent procedure
- If the investigation was sufficiently thorough
- Whether the employee had a meaningful opportunity to respond
Non-compliance does not automatically make a dismissal unfair, but it can increase compensation if unfairness is found.
Common Questions
Does the ACAS Code apply to all employees?
Yes, but some employees may have specific procedural variations depending on sector agreements or contracts.
Can dismissal be fair without following the Code?
Tribunals may still find dismissal fair if the employer can demonstrate substantive fairness, though non-compliance may lead to higher compensation.
Is the Code legally binding?
No, but tribunals give it significant weight, and employers are expected to take it seriously.
Final Thoughts
The ACAS Code of Practice provides a structured approach to disciplinary and dismissal procedures. Employers who follow its guidance are more likely to achieve fair outcomes, reduce tribunal risks, and limit compensation exposure. Employees benefit from clarity, fairness, and documented protections during dismissal processes. Understanding and applying the Code effectively is essential for anyone involved in employment disputes in England and Wales.