A zero-hours contract is an employment arrangement, most common in the United Kingdom, under which the employer is not obliged to provide any minimum number of working hours, and the worker accepts work as and when it is offered. Zero-hours contracts are widely used in hospitality, retail, healthcare, social care, and event work, where demand swings sharply from week to week. They give employers flexibility to scale capacity up and down, but they have also attracted sustained criticism for offering little income predictability to workers and being open to misuse, particularly through exclusivity clauses that the UK has since banned.
How does a zero-hours contract work?
- No minimum hours: the employer commits to no specific number of hours; the worker may receive a busy week one week and nothing the next.
- No obligation to accept work: the worker is generally free to turn down offered shifts, although in practice this varies by employer and sector norms.
- Shift-by-shift confirmation: hours, locations, and pay are confirmed shift-by-shift, not as a fixed schedule.
- Paid only for hours worked: the worker is paid only for the hours they actually work, plus accrued holiday entitlement based on those hours.
What rights do zero-hours workers have?
Zero-hours workers are not without protection; their rights depend on whether they are classified as a worker or an employee under UK law, but the core baseline is similar.
- Minimum wage: they must be paid at least the National Minimum Wage or National Living Wage for every hour worked.
- Paid holiday: statutory holiday accrues on the hours actually worked, usually expressed as a percentage uplift on hourly pay.
- Sick pay (if eligible): they may qualify for Statutory Sick Pay if they meet the earnings and qualifying-day thresholds.
- Protection from discrimination: the Equality Act applies to zero-hours workers as it does to other workers and employees.
- Ban on exclusivity clauses: since 2015 (extended further in 2022), employers cannot restrict zero-hours workers from taking work elsewhere.
- Auto-enrolment pension: where earnings cross the trigger, employers must enrol eligible workers in a workplace pension scheme.
Zero-hours vs other flexible arrangements
| Arrangement | Hours commitment | Typical context |
|---|---|---|
| Zero-hours contract | No minimum hours guaranteed | UK hospitality, retail, care, events |
| Casual or as-needed contract | Hours vary, no guarantee | Used in UK, India, and globally |
| Independent contractor | Per project or SOW | Self-employed, multiple clients |
| Part-time employee | Fixed reduced hours | Stable schedule and benefits |
Where regulation is heading
The UK Employment Rights Bill, introduced in 2024, proposes giving zero-hours workers a right to guaranteed hours based on their average pattern over a reference period. The direction of travel across the UK and parts of the EU is clearly toward more predictability for the worker, while preserving some flexibility for genuine demand-led roles. Employers using zero-hours models should expect more scrutiny, not less, over the next few years.
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