Zero-Hours Contract (UK)
A UK employment arrangement where the employer doesn't guarantee any minimum working hours, and the worker isn't obligated to accept work when offered, commonly used in hospitality, retail, healthcare, and gig-based roles.
- What Is a Zero-Hours Contract?
- Legal Framework for Zero-Hours Contracts in the UK
- Industries That Use Zero-Hours Contracts
- Rights of Zero-Hours Contract Workers
- Employer Obligations for Zero-Hours Contracts
- Upcoming Reforms: The Employment Rights Bill 2024
- Zero-Hours Contract Statistics [2026]
- Frequently Asked Questions About Zero-Hours Contracts in the UK
What Is a Zero-Hours Contract?
Key Takeaways
- ✓A zero-hours contract (also written as zero-hour contract or ZHC) is an employment arrangement where the employer provides no guaranteed minimum hours of work per week, month, or year.
- ✓The worker is typically classified as a 'worker' (not an 'employee') under UK law, which affects their entitlement to employment rights like unfair dismissal protection and redundancy pay.
- ✓Exclusivity clauses in zero-hours contracts are banned: the worker can't be prevented from working for other employers (Small Business, Enterprise and Employment Act 2015).
- ✓Over 1 million people in the UK work on zero-hours contracts as their main job, representing about 3.4% of total employment (ONS, 2024).
- ✓The Employment Rights Bill 2024 proposes significant reforms, including giving zero-hours workers the right to request guaranteed hours after a qualifying period.
A zero-hours contract is exactly what it sounds like: a contract that guarantees zero hours of work. The employer offers shifts or tasks when work is available. The worker can accept or decline. Neither side is committed to a specific volume of work. For employers, it's flexibility. Staffing scales up when demand spikes and scales down when it doesn't. No guaranteed hours means no obligation to pay for idle time. Restaurants, hotels, healthcare agencies, and event companies use zero-hours contracts to match labor supply with unpredictable demand. For workers, the picture is more complicated. Some genuinely prefer the flexibility, especially students, retirees, and people balancing multiple commitments. Others feel trapped in arrangements where they technically have a job but never know whether they'll earn enough to cover next month's rent. Critics call them 'contracts without commitment.' The reality is somewhere in between. UK law has evolved significantly since zero-hours contracts entered the public debate around 2013, adding protections while preserving the flexibility that makes them useful in certain sectors.
Legal Framework for Zero-Hours Contracts in the UK
Zero-hours contracts aren't defined in a single statute. Their legal treatment comes from a mix of employment legislation, case law, and recent reforms.
Employment status: worker vs employee
Most zero-hours contract holders are classified as 'workers' under UK law, not 'employees.' This distinction matters. Workers are entitled to National Minimum Wage, paid annual leave (5.6 weeks), rest breaks, protection from discrimination, and pension auto-enrollment. But they're not entitled to unfair dismissal protection, redundancy pay, statutory notice periods, or the right to request flexible working (though this is expanding). Some zero-hours workers may actually be employees if, in practice, the arrangement involves regular hours, mutual obligations, and employer control. Employment tribunals look at the reality of the relationship, not just what the contract says.
Exclusivity clause ban
Since 2015, employers can't include exclusivity clauses in zero-hours contracts. A clause that says 'you must not work for any other employer' while offering no guaranteed hours is void and unenforceable. The worker is free to take on other work. This was the first major legislative reform targeting zero-hours contracts specifically, and it addressed one of the most criticized practices: employers demanding loyalty without offering commitment in return.
National Minimum Wage obligations
Zero-hours workers must be paid at least the National Minimum Wage (or National Living Wage for workers aged 21+) for every hour worked. The employer can't average out pay across weeks to create periods where the effective hourly rate falls below the minimum. If a worker is required to be 'on call' at the workplace, that time generally counts as working time and must be paid.
Industries That Use Zero-Hours Contracts
Zero-hours contracts are concentrated in specific sectors where demand fluctuates significantly.
| Sector | % of Workforce on ZHCs | Why Used | Typical Roles |
|---|---|---|---|
| Hospitality | 8-12% | Demand varies by season, day, and weather | Waitstaff, bartenders, kitchen porters, housekeeping |
| Retail | 5-8% | Peak periods (Christmas, sales) require surge staffing | Shop assistants, warehouse pickers, stock room staff |
| Healthcare | 6-10% | Patient demand is unpredictable, shift gaps need filling | Care workers, agency nurses, support staff |
| Education | 4-7% | Term-time only roles, supply teaching | Supply teachers, exam invigilators, tutors |
| Events and Entertainment | 10-15% | Work is project-based and seasonal | Event staff, security, stagehands, ushers |
| Delivery and Logistics | 3-6% | Order volumes fluctuate daily | Delivery drivers, warehouse operatives, couriers |
Rights of Zero-Hours Contract Workers
Despite the lack of guaranteed hours, zero-hours workers do have significant legal protections under UK law.
- National Minimum Wage or National Living Wage for all hours worked, including time spent 'on call' at the workplace.
- 5.6 weeks of paid annual leave per year, calculated based on hours actually worked. Holiday pay accrues with each hour worked, typically calculated at 12.07% of hours.
- Rest breaks: 20 minutes if the shift exceeds 6 hours, 11 consecutive hours between shifts, and at least one day off per week.
- Auto-enrollment in a workplace pension scheme if they earn at least 10,000 pounds per year and are aged 22 or over.
- Protection from discrimination on grounds of age, race, sex, disability, religion, sexual orientation, gender reassignment, pregnancy, and marriage.
- Right to work for other employers. Exclusivity clauses are banned.
- Written statement of employment particulars (since April 2020, all workers, including zero-hours, must receive this on or before their first day).
- Protection from detriment for refusing to attend work or for working for another employer.
Employer Obligations for Zero-Hours Contracts
Using zero-hours contracts correctly requires attention to legal requirements that many employers overlook.
Providing written particulars
Since April 2020, all zero-hours workers must receive a written statement of employment particulars on or before their first day of work. This must include the employer's name, the worker's name, start date, pay rate, working hours expectations (even if variable), holiday entitlement, and notice requirements. Failing to provide this can result in an employment tribunal awarding compensation of 2 to 4 weeks' pay.
Calculating holiday pay correctly
Zero-hours workers accrue holiday based on hours worked. The standard calculation is 12.07% of hours worked (representing 5.6 weeks out of a 46.4-week working year). Some employers use a 'rolled-up' holiday pay method, adding 12.07% to every payment. The Supreme Court's ruling in Harpur Trust v. Brazel (2022) complicated this by holding that part-year workers should receive the same 5.6 weeks as full-year workers, which means the 12.07% method may understate entitlement for irregular workers.
Avoiding sham arrangements
If a zero-hours worker regularly works 35 hours a week, has set shift patterns, and faces consequences for declining work, the arrangement may be a sham. Employment tribunals can reclassify the worker as an employee, retroactively triggering unfair dismissal rights, notice pay, and redundancy entitlements. Employers should regularly audit zero-hours arrangements to verify they genuinely reflect flexible, non-obligatory working patterns.
Upcoming Reforms: The Employment Rights Bill 2024
The UK Government's Employment Rights Bill, introduced in October 2024, proposes the most significant changes to zero-hours contracts in a decade.
Right to guaranteed hours
The Bill proposes that workers on zero-hours contracts (and low-hours contracts) will have the right to request a guaranteed-hours contract reflecting their actual working pattern over a reference period. If a worker regularly works 20 hours per week over a 12-week reference period, they can request a contract guaranteeing 20 hours. The employer must offer the contract unless they have a justified reason to refuse.
Reasonable notice of shifts
Employers would be required to give reasonable notice of shifts and shift changes. Last-minute scheduling that prevents workers from planning their lives would be restricted. The specific notice periods will be set by secondary legislation, but expectations are for at least 7 days' notice for regular shifts.
Compensation for cancelled shifts
If an employer cancels a shift at short notice, the worker would be entitled to compensation. This addresses the common complaint that zero-hours workers turn down other opportunities to accept a shift, only to have it cancelled hours before it was due to start. The exact compensation levels will be determined through consultation.
Zero-Hours Contract Statistics [2026]
Data reflecting the scale and demographics of zero-hours employment in the UK.
Frequently Asked Questions
Can I be fired from a zero-hours contract?
Do I get sick pay on a zero-hours contract?
Can I refuse a shift on a zero-hours contract?
Am I entitled to a pension on a zero-hours contract?
Will zero-hours contracts be banned in the UK?
Written by Adithyan RK