Understanding Your Rights on a Zero Hours Contract
What rights zero hours workers have in England and Wales, including National Minimum Wage, holiday pay, and protection from detriment for refusing work.
Overview
A zero hours contract (also called a casual contract) is an arrangement under which the employer is not obliged to offer work and the worker is not obliged to accept it. Despite this apparent flexibility, individuals on zero hours contracts are not without legal rights. The Employment Rights Act 1996 (as amended by the Employment Relations (Flexible Working) Act 2023 and anticipated reforms under the Employment Rights Bill 2024) prohibits exclusivity clauses in zero hours contracts — a worker cannot be required to work exclusively for one employer. Workers (not just employees) are entitled to the National Minimum Wage, paid annual leave, rest breaks, and protection from unlawful deduction from wages. The Employment Rights Bill 2024 (if enacted) will introduce a right to a guaranteed hours contract after 12 weeks.
Who Can Use This Process
- You are likely eligible to use this guide if your situation involves understanding your rights on a zero hours contract.
- You have a genuine legal basis for the matter (contract, tort, statutory right, etc.).
- You have made reasonable attempts to resolve the matter directly with the other party first.
Step-by-Step Process
Determine Your Employment Status
Rights on a zero hours contract depend on whether you are a 'worker', an 'employee', or genuinely self-employed. Most individuals on zero hours contracts are 'workers' under section 230(3)(b) of the Employment Rights Act 1996 — they work personally for an employer who is not their client or customer. Workers have fewer rights than employees (e.g., no unfair dismissal, no statutory redundancy pay) but do have National Minimum Wage, holiday pay, rest breaks, and whistleblowing protection rights. Some zero hours workers acquire 'employee' status over time through regularity of engagement.
- Employment status is determined by the reality of the arrangement, not the label on the contract
- If you have worked regular hours each week for the same employer for an extended period, you may have acquired employee status — seek advice
- Recent case law (Uber BV v Aslam [2021]) confirms that courts look at the entire working relationship, not just the written contract
- HMRC also has an employment status tool (CEST) but this is primarily for tax purposes
Check the Exclusivity Clause Ban
Since 26 May 2015 (extended by the Workers (Predictable Terms and Conditions) Act 2023), exclusivity clauses in zero hours contracts are unenforceable under section 27A of the Employment Rights Act 1996. This means you cannot lawfully be required to work only for one employer on a zero hours contract. Any term requiring exclusivity is void. Furthermore, you cannot be dismissed or subjected to a detriment for working for another employer in breach of an exclusivity clause.
- If your employer is threatening action because you have taken work with another employer, seek legal advice immediately — they cannot lawfully do this under a zero hours contract
- Even if the contract contains an exclusivity clause, that clause is void — you do not need to comply with it
- Keep records of any threats or detriment resulting from working elsewhere
Assert Your National Minimum Wage Rights
All workers (including zero hours workers) are entitled to be paid the National Minimum Wage for every hour worked. From April 2024, this is £11.44/hour for those aged 21 and over (the National Living Wage). You must be paid at least the NMW for all time you are required to be at the employer's disposal, including travel time between assignments (but not ordinary home-to-work commute). If you are paid below the NMW, you can complain to HMRC (who investigate and enforce) or bring a claim for unlawful deduction from wages at the Employment Tribunal.
- Record the hours you work — use your phone or a diary to log start and finish times
- If you are paid less than the NMW for any hour, you are entitled to back pay for up to 6 years (via the Employment Tribunal)
- HMRC can investigate NMW compliance on receipt of a complaint — this is free and confidential
- Travel between different work locations during a working day counts as paid time
Claim Your Holiday Pay
Workers on zero hours contracts are entitled to 5.6 weeks' paid annual leave per year under the Working Time Regulations 1998. For irregular workers, holiday pay is calculated at 12.4% of pay over the previous 52 weeks (or the actual working weeks if fewer than 52). As of April 2024, the 'rolled-up holiday pay' model is lawful for irregular-hours workers, meaning holiday pay can be included in each payment at a rate of 12.07% (from 2024, the government-updated calculation). You must take your leave entitlement — it cannot simply be paid out without being taken (except on termination).
- If holiday pay is not being paid at all, bring a claim for unlawful deduction from wages
- Check whether your employer is using rolled-up holiday pay — if so, it must be clearly identified as such in your payslip
- On termination of employment, you are entitled to payment for any accrued but untaken holiday
- The calculation of holiday pay for zero hours workers has been subject to litigation — seek advice for complex cases
Protection From Detriment for Refusing Work
Since January 2016, zero hours workers are protected from suffering a detriment (including dismissal) because they refused work that was offered to them under a zero hours contract. This protection applies specifically to the right to refuse work where no obligation to offer work exists. An employer cannot penalise you for exercising this right — for example, by reducing future offers of work or by ending the arrangement. If you suffer a detriment, you can bring a claim to the Employment Tribunal.
- Keep records of work offered and any changes in the pattern of offers after you refuse work
- A claim for detriment (not dismissal) does not require minimum service — you can claim from day one
- If the arrangement is ended entirely in retaliation for refusing a shift, this may be treated as dismissal and potentially unfair — seek advice on employment status
- The Employment Rights Bill 2024 proposes a right for zero hours workers to request a guaranteed hours contract after 12 weeks — monitor for when this comes into force
Costs
Important Warnings
Zero hours contracts do not prevent employment rights from accruing — claims to the Employment Tribunal are free and available from day one for some rights.
The Employment Rights Bill 2024 may significantly alter the legal landscape for zero hours workers. Monitor its progress through Parliament.
If your employer is withholding work in retaliation for asserting your rights (e.g., claiming holiday pay), document everything and seek advice from ACAS or a union.
Useful Links
Frequently asked questions
- How long does the understanding your rights on a zero hours contract process take?
- The end-to-end timeline depends on which stage you're at. Common steps run on these timeframes: "Assess status at the start of any dispute"; "Immediately if threatened"; "NMW claim: 3 months less 1 day from underpayment (Employment Tribunal); 6 years via civil claim"; "Holiday pay claims: 3 months less 1 day from the underpayment". Add court / counterparty response time on top — disputed matters can run months longer than the bare minimum.
- How much does it cost?
- Main outlays are: Employment Tribunal claim (NMW/holiday/detriment) — Free; ACAS early conciliation — Free; Citizens Advice or union advice — Free. Court fees often qualify for Help with Fees remission if you're on a low income. Solicitor fees are extra and vary widely — many matters can be done as a litigant in person.
- What are the most common mistakes to avoid?
- Watch out for: Zero hours contracts do not prevent employment rights from accruing — claims to the Employment Tribunal are free and available from day one for some rights.; The Employment Rights Bill 2024 may significantly alter the legal landscape for zero hours workers. Monitor its progress through Parliament.; If your employer is withholding work in retaliation for asserting your rights (e.g., claiming holiday pay), document everything and seek advice from ACAS or a union.. If you're unsure on any of these, get advice from a regulated solicitor or a free service like Citizens Advice before acting.
- Where can I find the official forms and guidance?
- The official sources are: GOV.UK: Zero Hours Contracts; ACAS: Zero Hours Contracts; GOV.UK: National Minimum Wage Rates. Always use the forms / guidance from the issuing authority's own site — third-party copies can be out of date.
- Can I do this myself without a solicitor?
- Yes — many people complete this kind of matter as a litigant in person. The site walks through each step in plain English. A solicitor is recommended if: large sums are at stake, the other side has legal representation, the matter involves criminal liability, children, immigration, or you're unsure on any procedural deadline. Free advice is available from Citizens Advice, Law Centres, and (for some matters) LawWorks pro bono clinics.
Part of our Employment Disputes hub
Pre-claim grievance through ACAS Early Conciliation, ET1, and Employment Tribunal hearing under the post-ERA 2025 regime.