When your employer wants to change your role, hours, pay, or place of work, you are not powerless. UK employees are protected from job changes that breach their contract or are imposed without proper consultation. In 2026, the Employment Rights Act 2026 has reshaped several of these protections, including the right to claim unfair dismissal from day one of employment. This guide explains when a contract change is lawful, what counts as a breach, and the steps you can take if you disagree with a proposed change.

How you are protected from job changes in 2026

The Employment Rights Act 2026, which builds on earlier employment legislation, introduced several changes that affect how employers can alter contracts. The most significant for employees is the removal of the two-year qualifying period for unfair dismissal claims. According to gov.uk guidance from 2026, most employees now have this right from their first day of employment.

Other relevant changes include the right to make two statutory flexible working requests in any 12-month period, rather than one, and stronger protections around predictable working patterns for people on zero-hours contracts. If your proposed job change affects your hours or location, our guide to flexible working rights UK 2026 explains how to request a formal adjustment. For zero-hours arrangements specifically, see our article on zero hours reform 2026.

Can my employer change my contract?

Your employer cannot normally change your contract without your agreement. A contract is a legal agreement, and altering its terms without consent is a breach. However, there are lawful routes:

• Both parties agree to the change in writing.
• A flexibility or variation clause in your contract permits the specific change.
• A collective agreement with a recognised trade union covers the change.

Even where a flexibility clause exists, your employer must act reasonably. They cannot use a vague clause to make sweeping changes to your duties, pay, or location. If your contract is unclear, ACAS guidance from 2026 recommends seeking written clarification before any change takes effect.

Common reasons employers give for changing a role

Employers may propose changes for genuine business reasons. These can include restructuring, new legal or regulatory requirements, correcting a drafting error, or moving staff to meet changing demand. In some cases, disciplinary outcomes such as demotion or reduced pay may be allowed if your contract and disciplinary procedure expressly permit them.

Whatever the reason, your employer should consult you and explain the business case. If you are asked to accept a change that affects your pay, hours, or place of work, request the proposal in writing and check it against your signed contract and staff handbook.

Flexibility clauses and reasonable notice

A flexibility clause lets an employer change specific terms without renegotiating the whole contract. These clauses are common in startup and scale-up environments where roles evolve quickly. However, an employer must still give reasonable notice and must not use the clause to impose changes that are so fundamental they effectively create a new job.

For example, a clause allowing “reasonable changes to duties” may not justify cutting your salary by 20% or relocating you to another city without notice. If you believe a flexibility clause is being misused, keep a written record of the original contract, the proposed change, and your objections.

What to do if you do not agree to a change

If you do not accept a proposed change, put your objection in writing and continue working under protest. This means you make it clear you do not agree but are not walking out. Do not simply carry on working in silence, as that could be interpreted as acceptance over time.

Steps to take:

1. Ask for the proposed change in writing, including the reason and effective date.
2. Check your contract, staff handbook, and any collective agreement for flexibility clauses.
3. Respond in writing stating whether you accept, reject, or wish to negotiate.
4. Request a meeting with your line manager or HR to discuss alternatives.
5. If the change is imposed, contact ACAS or your trade union before taking formal action.

Fire and rehire: new rules for 2026

Fire and rehire, also called dismissal and re-engagement, happens when an employer dismisses staff and rehires them on different terms. In 2026, a new statutory code of practice on dismissal and re-engagement applies in the UK. The code, issued by the Department for Business and Trade and supported by ACAS, requires employers to explore alternatives thoroughly and consult in good faith before using this tactic.

Employment tribunals can now increase compensation by up to 25% if an employer unreasonably fails to follow the code. Conversely, if an employee unreasonably fails to follow the code, their compensation can be reduced by up to 25%. This makes it even more important to engage constructively in consultation and keep records of all discussions. For a timeline of when these duties take effect, see our Employment Rights Act employer timeline.

Employment tribunal claims and time limits

If your employer imposes a change without agreement or breaches your contract, you may be able to make an employment tribunal claim. Under the Employment Rights Act 2026, most employees now have the right to claim unfair dismissal from day one of employment, removing the previous two-year qualifying period.

Key time limits, according to gov.uk guidance from 2026, are:

• Unfair dismissal and discrimination claims: three months less one day from the date of dismissal or the act you are complaining about.
• Breach of contract claims at an employment tribunal: three months less one day, and only after your employment has ended.
• Breach of contract claims in the county court: up to six years, depending on the type of contract.

Before submitting a tribunal claim, you must contact ACAS for Early Conciliation. ACAS can help resolve the dispute without a hearing and may extend the time limit while negotiations take place.

Getting support from ACAS and trade unions

ACAS is an independent public body that provides free, impartial advice on workplace rights. In 2026, it remains the first port of call for contract change disputes. You can call the ACAS helpline or use its online guidance to understand your options.

If you belong to a trade union, speak to your representative as soon as a change is proposed. Trade unions can negotiate on your behalf, accompany you to meetings, and support collective action where multiple employees are affected. If you are not in a union, the TUC’s WorkSmart tool or unionfinder service can help you find representation.

Action steps

• Read your contract carefully and highlight any flexibility or variation clauses.
• Ask for every proposed change in writing before agreeing.
• Work under protest if a change is imposed, and keep a written record.
• Contact ACAS for Early Conciliation if you cannot resolve the issue directly.
• Seek legal advice or union support before making an employment tribunal claim.

Conclusion

UK employees are protected from job changes that ignore their contract or bypass proper consultation. The Employment Rights Act 2026 strengthens these protections, particularly for unfair dismissal and fire-and-rehire practices. If you face an unwanted change, act quickly, keep written records, and use the free support available from ACAS and trade unions.