This guide is maintained as a current resource for July 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.
Detailed guide on dismissal for refusing unlawful instructions in UK employment law. Explains when employees can lawfully refuse instructions, relevant statutory protections including health and safety and whistleblowing, how employment tribunals assess fairness of dismissal, procedural requirements, time limits, and practical guidance for employees and employers in England and Wales.
Employees are generally expected to follow lawful and reasonable instructions from their employer as part of the implied terms of an employment contract. However, there are situations where an instruction may be unlawful, unsafe, discriminatory or outside the scope of the contract. In such cases, a refusal to comply with that instruction can raise complex issues if an employer reacts with disciplinary action or dismissal. Under UK employment law, especially in England and Wales, tribunals must assess whether the employer's decision was fair - considering the legality of the instruction, the employee's reasons for refusal, and the way the employer handled the situation. This article explains how dismissal for refusing unlawful instructions is treated, relevant legal tests, tribunal considerations, practical steps, and common questions.
Lawful and Reasonable Instructions
What Employees Are Expected to Do
Employment contracts include an implied duty for employees to follow lawful and reasonable instructions within the scope of their role. If instructions are lawful and reasonable, refusal can amount to insubordination, potentially leading to disciplinary action or dismissal for misconduct. Tribunals look at factors such as whether the instruction was within the employee's contractual duties and whether the refusal was unjustified or unreasonable.
Refusing Unlawful or Unsafe Instructions
Employees are entitled to refuse instructions that would require them to act unlawfully, breach health and safety laws, or put themselves or others at risk. For example:
- An instruction that would breach health and safety laws or expose someone to “serious and imminent danger” can be refused under protections in the Employment Rights Act 1996 and health and safety legislation. Refusal in these circumstances is not misconduct and is protected from dismissal or detriment.
- Refusing to undertake tasks outside the employment contract, or that would involve illegal conduct such as falsifying records or breaching data protection laws, may also be lawful. Refusal can be linked to protections under whistleblowing law if the instruction involves wrongdoing.
Employees should not be treated as insubordinate if their refusal arises from a genuine and reasonable belief that the instruction is unlawful or unsafe.
Tribunal Approach to Dismissal for Refusal
Fairness and Reasonableness
If an employee is dismissed after refusing an instruction, an employment tribunal will assess whether the dismissal was fair. There is no specific rule that refusal to follow an unlawful instruction automatically makes dismissal unfair; instead, the tribunal considers:
- Whether the instruction was lawful and reasonable. An employer is generally entitled to dismiss for failure to follow lawful and reasonable directions.
- Whether the refusal was reasonable. Even if an instruction was lawful, there may be circumstances where refusal could be justified, such as where compliance would cause serious risk.
- Whether the employer followed a fair process, including investigation, disciplinary procedures, and allowing the employee to explain their position in line with the Acas Code of Practice on discipline.
In assessing fairness under section 98 of the Employment Rights Act 1996, tribunals consider whether the employer acted within the range of reasonable responses available to a fair employer. A decision that falls outside this range may be considered unfair dismissal.
Case Law on Refusal and Dismissal
Case law suggests that dismissal for refusing an instruction is not automatically unfair simply because the instruction was unlawful. In some reported case summaries, employment appeal tribunals have held that dismissal for refusing what turned out to be an unlawful order might still be fair if, in context, the employer's actions were reasonable or based on professional advice, even if that advice was mistaken. The overall fairness of the employer's conduct is decisive.
Each situation is highly fact‑specific. Tribunals will look at the totality of circumstances, including the nature of the instruction, the risk involved, the employee's explanation and past conduct.
Statutory Protections That May Apply
Health and Safety Refusals
Under section 44 of the Employment Rights Act 1996, employees are protected from detriment and dismissal for refusing to work in circumstances where they reasonably believe they face serious and imminent danger they cannot avoid. This protection was extended in 2021 to cover all workers, not just employees. If dismissal is connected to such a lawful refusal, it can be automatically unfair, and there is no qualifying period of service required.
Whistleblowing and Illegality
If the instruction amounts to wrongdoing or illegality - such as instructing an employee to breach data protection, regulatory requirements, or report false information - refusing to comply may be protected under whistleblowing legislation (Public Interest Disclosure Act 1998 as incorporated into the Employment Rights Act). Dismissal connected to making or intending to make a protected disclosure is treated as automatically unfair.
Working Time and Other Statutory Rights
Employees cannot be fairly dismissed for refusing instructions that would require them to give up statutory rights - for example, refusing to work in breach of the Working Time Regulations 1998. Statutory protections exist for refusals linked to these legal rights, and dismissal for such reasons may be automatically unfair.
The Importance of Fair Procedure
Even where an employer believes dismissal for refusal is justified, they must ensure they follow a fair disciplinary procedure. The Acas Code of Practice on Disciplinary and Grievance Procedures sets out principles of fairness: employers should investigate, inform the employee of allegations, allow representation, and give an opportunity to appeal. Failure to follow a fair process can make a dismissal unfair, even if the substantive reason might otherwise have been defensible.
Practical Guidance for Employees
Before Refusing an Instruction
- Clarify the instruction in writing where possible. Understanding exactly what is being asked helps frame any refusal.
- Express concerns formally if you believe an instruction is unlawful, unsafe, or outside your contract.
- Raise the issue through internal channels, such as health and safety representatives or line managers, preferably in writing.
If Dismissed for Refusal
- Note the reason for dismissal provided in writing and whether it refers to refusal of instruction.
- Consider whether statutory protections (health and safety, whistleblowing, statutory rights) apply to your refusal.
- Claims for unfair dismissal generally need at least two years' continuous service, unless automatic unfair dismissal protections apply due to statutory rights breached.
- Time limits for claims to an employment tribunal are typically three months less one day from the date of dismissal and Early Conciliation through Acas is a preliminary step.
Practical Guidance for Employers
Employers should:
- Establish whether an instruction is lawful and reasonable before issuing it.
- Provide clear communication and justification if an instruction is challenged.
- Investigate refusals, especially where the employee asserts legal, safety, or contract concerns.
- Apply fair disciplinary procedures and consider alternatives to dismissal if possible.
- Take advice where statutory protection may apply to refusals (e.g. health and safety, whistleblowing, working time rights).
Fair handling reduces the risk of tribunal claims and improves organisational decision‑making.
Common Questions
Can an employer dismiss someone for refusing an unlawful instruction?
Yes, but whether dismissal is fair depends on whether the instruction was lawful and reasonable and whether the employer's response was fair in all the circumstances. Tribunals assess fairness holistically.
Is refusal to follow unsafe instructions protected?
Yes. Under the Employment Rights Act and health and safety law, refusing to work in serious and imminent danger can be protected from detriment and dismissal.
Do I need two years' service to claim unfair dismissal?
Ordinarily yes, but automatic unfair dismissal protections - such as for health and safety refusals and whistleblowing - do not require a qualifying period.
Key Takeaways
Dismissal for refusing an instruction that is unlawful or outside the scope of the employment contract raises complex legal issues. Tribunals assess whether the instruction was lawful and reasonable, whether the refusal was justified, and whether the employer's response was fair under principles of unfair dismissal law. Statutory protections for refusals based on health and safety, whistleblowing or other statutory rights mean dismissal for such refusals may be automatically unfair. Employers must manage instructions and responses carefully, with clear communication, investigation and adherence to fair procedures, while employees who face dismissal for refusing unlawful instructions should consider statutory protections and tribunal time limits when assessing their options.
