Can Dismissal for Refusing Extra Work Be Unfair?

Understanding whether a dismissal for refusing extra work can be unfair dismissal under UK (England and Wales) employment law involves examining legal principles, contractual obligations, statutory rights, and real workplace practice. This article explains these issues in clear, accessible language while maintaining accuracy and context for both solicitors and non‑experts.

What Is Unfair Dismissal?

“Unfair dismissal” is a legal concept under UK employment law that allows an employee to challenge a termination of their employment if their employer did not act fairly and reasonably. Not all dismissals are unfair. For an unfair dismissal claim to generally succeed, two key tests apply:

1. Qualifying Service – the employee must normally have worked for the employer for at least two years (subject to statutory changes planned for 2027 reducing this to six months).
2. Fair Reason and Fair Procedure – the employer must show:
   • A legally recognised, fair reason for dismissing the employee;
   • That the dismissal was reasonable in all the circumstances;
   • That the employer followed a fair procedure before dismissing.

If these tests are not met, a claim can be brought to an employment tribunal.

When a Dismissal Is Automatically Unfair

Certain dismissals are automatically unfair and do not require the qualifying service period. This includes dismissal for exercising a statutory employment right, such as time off for dependants or flexible working requests.

Importantly, the statutory protection includes refusing to comply with a requirement that would breach your working time rights under the Working Time Regulations, such as refusing to forgo rest breaks or maximum working hours.

Refusing Extra Work: Contract and Statutory Rights

Whether refusing extra work gives rise to a fair or unfair dismissal depends on the terms of the employment contract and statutory protections:

1. Contractual Terms

• If the employment contract requires an employee to work extra hours (for example “you will work such additional hours as necessary”), refusing those hours may be a breach of contract. In such cases an employer may have a fair reason (conduct, capability or breach of contractual obligation) to dismiss.
• If the contract does not allow for extra hours or overtime, an employee may argue they are simply fulfilling the terms of their contract, and a dismissal for refusing additional hours could lack a fair reason.

However, even if there is a contractual right to require extra hours, the employer must still act reasonably and follow a fair disciplinary process. Failure to do so can make a dismissal unfair.

2. Working Time Regulations

Under the Working Time Regulations, employees have rights to limits on average weekly working hours and to rest breaks. If an employer demands work that breaches these limits, an employee can refuse. The law protects employees against dismissal for refusing to work that would breach their legal working time rights.

Example: An employee refused to return to work when denied their statutory rest break. The law protected the worker from dismissal for that refusal because it involved a breach of working time rights.

Constructive Dismissal: When Refusal Leads to Resignation

Sometimes an employer's conduct surrounding refusal of extra work can be so unreasonable that it fundamentally breaches the employment contract. In such a scenario:

• If the employee resigns because of the employer's conduct, they may have a claim for constructive dismissal, which is a form of unfair dismissal. A constructive dismissal claim requires showing that the employer's actions were so serious that they effectively forced the employee to resign.

Examples of conduct that might support constructive dismissal claims include repeated unreasonable changes to working patterns, threats of dismissal for asserting rights, or other behaviour that destroys trust and confidence.

Employment Tribunal Processes

If an employee believes their dismissal was unfair, the usual steps are:

1. Early Conciliation with Acas before issuing a tribunal claim.
2. Submitting an ET1 claim to an employment tribunal within three months less one day of the dismissal date.
3. The tribunal assesses whether the dismissal was fair in reason and procedure.

Compensation may include financial awards for lost earnings and, in some cases, reinstatement or re‑engagement orders.

Practical Considerations Before a Claim

Evidence

• Written contract terms;
• Employer communications regarding extra hours;
• Records of warnings, meetings, and disciplinary decisions;
• Notes or witness accounts related to the dispute.

Seek Advice

• Union representatives, employment law solicitors, and advisory services like Acas and Citizens Advice can provide guidance tailored to specific circumstances.

Common Misconceptions

• “My employer can make me work extra hours if needed” – Not always. The contract must permit it, and demands must be reasonable.
• “Refusing extra work automatically makes dismissal unfair” – Not automatically. It depends on contract terms, statutory rights, and fair process.
• “I have to stay and accept changes” – Employees can challenge unfair variations, but leaving without reason weakens unfair dismissal claims unless the employer's conduct justifies constructive dismissal.

Key Takeaways

A dismissal for refusing extra work can be unfair in certain circumstances:

• If the employer lacks a fair reason tied to contractual obligations or statutory rights.
• If the dismissal breaches working time rights and statutory protections.
• If the employer fails to follow a fair, reasonable procedure.
• If the employer's conduct is sufficiently serious to justify constructive dismissal.

Employees considering a claim should check contract terms, document interactions, and seek legal advice promptly due to strict tribunal time limits.

James William Steven Parker

James is the founder of UKLegalGuides.com and a former agent at the Ministry of Justice (UK). With a background in processing legal claims, he launched this platform to make the laws of England and Wales accessible to everyone.