Zero-hour workers

Zero-hour workers are employees whose contracts guarantee no minimum working hours, meaning they are only called in when work is available and paid only for the time they actually work.

This arrangement is common in hospitality, retail, healthcare, and event staffing, where demand shifts unpredictably and maintaining a fixed headcount would create unnecessary cost. A zero-hour contract gives employers a flexible pool to draw from, while workers can accept or decline shifts based on their own availability. In many countries, zero-hour workers still qualify for holiday pay and minimum wage protections, though the specifics vary by jurisdiction.

How zero-hour contracts work in practice

There is no set schedule. When a shift becomes available, the employer reaches out and the worker decides whether to take it. Some teams post open shifts through an app; others rely on group chats or direct messages. The worker is paid for hours worked and nothing more. There is no obligation on either side to offer or accept any particular shift.

Common challenges

For workers, the main difficulty is income unpredictability. Without a guaranteed minimum, covering fixed monthly expenses takes more planning. Some people find zero-hour arrangements fit well alongside studying, caregiving, or other commitments. For others, the instability outweighs the flexibility.

For employers, the challenge is coordination. Managing a pool of on-call workers with varying availability takes more active effort than running a standard roster. Workers who feel disconnected between shifts are more likely to stop responding when new shifts come up, which erodes the pool over time. Keeping people engaged when there is nothing immediate to act on is an ongoing effort.

Zero-hour work and legal considerations

The legal status of zero-hour workers varies significantly by country. In the UK, for example, zero-hour workers are entitled to the national minimum wage, holiday pay, and rest break protections, despite having no guaranteed hours. Some jurisdictions have introduced restrictions on exclusivity clauses, which previously prevented workers from taking shifts with other employers. Anyone managing zero-hour workers should confirm the local rules that apply to their situation.

How Zelos helps

Zelos is built for on-demand teams where shift availability changes frequently. Managers can post open shifts and let workers sign up based on their own availability, which reduces the back-and-forth of direct outreach. Workers stay connected through the app between shifts, which helps keep the pool responsive when new work comes up.