The ACAS Code of Practice Explained Simply

15 February 2026

The ACAS Code of Practice Explained Simply

Workplace issues can be stressful and confusing. Whether you are facing disciplinary action or raising a grievance, understanding the rules that should be followed can make the situation feel clearer and more manageable.

One of the most important sources of guidance in workplace disputes is the ACAS Code of Practice on Disciplinary and Grievance Procedures.

Many employees in Scotland have heard of the ACAS Code but are unsure what it actually means or why it matters. This guide explains the ACAS Code in straightforward language, including how it affects disciplinary procedures, grievance processes, and employment tribunal decisions.

What is the ACAS Code of Practice?

The ACAS Code of Practice is official guidance produced by the Advisory, Conciliation and Arbitration Service (ACAS). It sets out the basic standards of fairness that employers are expected to follow when handling disciplinary matters or employee grievances.

Although the Code itself is not legislation, it carries significant weight. Employment tribunals across Scotland and the rest of Great Britain expect employers to act reasonably, and the ACAS Code is widely treated as the benchmark for fair workplace procedures.

The Code covers two main situations:

  • Disciplinary procedures — when an employer has concerns about conduct or performance
  • Grievance procedures — when an employee raises a concern about their workplace

Its main aim is to ensure workplace problems are handled fairly, consistently, and without unnecessary delay.

Why the ACAS Code Matters in Scotland

Employment law applies consistently across Scotland, England, and Wales, and the ACAS Code applies fully to Scottish workplaces.

One particularly important feature is the possibility of an uplift in compensation. If an employment tribunal finds that an employer has unreasonably failed to follow the ACAS Code, it may increase any compensation awarded to an employee by up to 25%.

This makes the Code extremely important in practice.

Following the Code helps:

  • protect employees from unfair treatment
  • give employers a structured process
  • reduce workplace disputes
  • improve fairness in decision-making

Understanding the Code can help employees recognise when procedures are not being followed properly.

Core Principles of the ACAS Code

The ACAS Code is built on several key principles of fair workplace practice.

These include:

  • dealing with issues promptly but fairly
  • carrying out proper investigations before making decisions
  • allowing employees to explain their side of events
  • giving employees the right to be accompanied at formal meetings
  • making decisions based on reasonable evidence
  • providing written outcomes
  • allowing employees the right to appeal

These principles apply whether the issue is relatively minor or potentially serious.

You can learn more about this in our guide to
Right to Be Accompanied at Disciplinary & Grievance Meetings in Scotland.

What a Fair Disciplinary Procedure Should Look Like

A fair disciplinary process normally follows a structured series of steps.

In most cases, a reasonable employer would:

  • Inform the employee in writing about the concern
  • Provide enough detail to allow the employee to respond
  • Carry out a fair investigation
  • Invite the employee to a disciplinary meeting
  • Allow the employee to be accompanied
  • Consider the employee’s explanation carefully
  • Issue the outcome in writing
  • Offer the right to appeal

You can read more about disciplinary meetings in our guide:
Disciplinary Hearing Help in Glasgow

Even if your employer’s policy differs slightly, the overall process should still be fair and reasonable.

What a Fair Grievance Procedure Should Look Like

When an employee raises a grievance, the process should usually include:

  • An attempt to resolve the issue informally where possible
  • A formal grievance meeting if the issue continues
  • A fair investigation
  • A written outcome
  • A right of appeal

Grievances can involve issues such as:

  • bullying or harassment
  • workplace conflict
  • pay concerns
  • working conditions
  • unfair treatment

You can read more about this in our guide:
How the Grievance Procedure Works in Scotland

The Right to Appeal

One of the most important parts of the ACAS Code is the right to appeal.

If you receive a disciplinary or grievance outcome that you believe is wrong or unfair, you should normally be given the opportunity to challenge the decision.

Appeals provide a second review of the situation and help ensure fairness.

You may find this guide helpful:
How to Appeal a Disciplinary or Grievance Outcome (Scotland)

Common Difficulties Employees Face

In real workplaces, procedures do not always run smoothly.

Common concerns include:

  • investigations that feel one-sided
  • lack of clear information
  • delays in communication
  • being denied the right to be accompanied
  • outcomes that seem predetermined
  • pressure to accept decisions quickly

Understanding the ACAS Code helps employees recognise when a process may not be fair.

It can also help you ask better questions and protect your position.

Practical Tips for Employees

If you are involved in a disciplinary or grievance procedure, it can help to:

  • Keep copies of all letters and emails
  • Take notes during meetings
  • Review your employer’s policy carefully
  • Ask for clarification if something is unclear
  • Seek support early if the situation escalates

Being organised makes it easier to respond confidently.

Local support across Scotland

If you are based in Glasgow, Edinburgh, or elsewhere in Scotland, understanding how the ACAS Code works can make a significant difference to how you approach workplace problems.

Support at an early stage can help prevent situations from escalating unnecessarily.

How Ark Advocacy can help

If you are facing disciplinary action, raising a grievance, or preparing for an appeal in Scotland, professional support can make the process easier to manage.

Ark Advocacy can help you:

  • understand workplace procedures
  • review letters and investigation outcomes
  • prepare for meetings
  • attend meetings with you where appropriate
  • organise evidence and documentation

You may also find these guides helpful:

FAQ

Does the ACAS Code apply to all employers?

Most employers are expected to follow the ACAS Code when dealing with disciplinary and grievance matters. Some small organisations may adapt procedures, but fairness is still required.

What happens if an employer does not follow the ACAS Code?

If an employment tribunal finds that an employer has unreasonably failed to follow the Code, compensation may be increased by up to 25%.

Do employees have to follow the ACAS Code too?

Employees are also expected to act reasonably, attend meetings, and follow procedures where possible.

Does the ACAS Code guarantee a fair outcome?

The Code promotes fairness, but each situation depends on the facts. Following the Code helps ensure decisions are reasonable.

Can the ACAS Code affect unfair dismissal claims?

Yes. Tribunals often consider whether the ACAS Code was followed when deciding unfair dismissal claims.

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Disclaimer: This article provides general information and is not legal advice. Employment situations are fact-specific, and strict time limits can apply.