Right to Work and Holiday Pay for Irregular-Hours Staff

Why this matters for employers

Hiring and managing irregular-hours staff can be operationally flexible, but it also creates compliance pressure. Two areas regularly cause mistakes: right to work checks at the point of recruitment, and holiday pay calculations where hours vary from week to week.

These rules matter across hospitality, retail, logistics, care, education, construction and many other sectors. If your workforce includes zero-hours workers, bank staff, seasonal staff or other irregular-hours arrangements, it is worth tightening your process now rather than trying to fix gaps later.

This article gives a practical overview for UK employers. It is general information only, not legal advice.

Right to work checks: the basics

In the UK, employers must check that every employee or worker has the right to work before employment starts. That applies regardless of contract type, including irregular-hours arrangements.

The purpose of the check is to confirm:

• the person is who they say they are
• they have permission to do the role in the UK
• any conditions attached to their permission are understood and monitored

If you carry out compliant checks, keep proper records and follow the prescribed process, you may have a statutory excuse against a civil penalty if the person is later found to be working unlawfully.

What to check

The exact route depends on the person’s nationality and immigration status. In broad terms, employers may use:

• an online right to work check using a share code
• a manual document check, where permitted
• an identity service provider for eligible digital checks

The key point is to use the correct route for the individual, not a one-size-fits-all approach.

Timing matters

A right to work check should be completed before work starts. For many employers, this is a practical issue with irregular-hours staff because shifts may begin quickly, especially in seasonal or high-turnover environments.

Good practice is to make right to work verification part of the onboarding workflow, not an optional admin task. If a manager can schedule shifts before HR has completed the check, the organisation may already be exposed.

Recordkeeping is part of compliance

You should keep a clear, auditable record of:

• the check completed
• the date it was carried out
• who carried it out
• any follow-up check date, where relevant

For workers with time-limited permission, repeat checks must be tracked and actioned before expiry.

Common right to work mistakes with irregular-hours staff

Irregular-hours recruitment is often fast-moving, so the same errors appear again and again:

• letting someone work a shift before the check is finished
• relying on a photocopy or informal visual check when another method is required
• failing to diarise repeat checks for time-limited permissions
• keeping documents in inconsistent locations, making audit trails hard to prove
• assuming agency or casual status removes the employer’s responsibility

If you engage workers through an agency, it is important to be clear about who is carrying out the right to work check and retaining the evidence. Do not assume someone else has done it.

Holiday pay for irregular-hours staff: the practical picture

Holiday entitlement and holiday pay can be more complex for irregular-hours staff because pay is not always tied to fixed weekly hours.

The main issue is ensuring workers receive the correct holiday entitlement and are paid correctly when they take leave.

Understand the difference between entitlement and pay

These are separate concepts:

• Holiday entitlement is the amount of paid leave the worker is entitled to take.
• Holiday pay is the amount they are paid while on leave.

For staff with variable hours, both need careful handling.

Why variable patterns create risk

If someone’s hours change week to week, a simple “days in the contract” approach may not reflect their real working pattern. Problems often arise where employers:

• calculate holiday from a fixed full-time template
• pay holiday based only on basic contracted hours when extra shifts are regular
• forget that overtime or commission may need to be considered in some circumstances
• allow holiday balances to build up without a clear method for tracking accrual

Keep the holiday calculation method consistent

Whatever method you use, it should be:

• clear
• documented
• consistently applied
• reflected in contracts and policies

For irregular-hours workers, the GOV.UK and ACAS guidance should be your first reference points when deciding how to calculate entitlement and pay.

Track hours accurately

You need reliable records of actual hours worked. Without them, holiday pay calculations can quickly become guesswork.

Useful records include:

• rota data
• clock-in and clock-out records
• approved timesheets
• shift logs
• payroll reports

This is especially important where workers do additional shifts at short notice or move between sites.

Building a compliant process

The best way to manage both right to work checks and holiday pay is to build them into your standard operating procedures.

1. Create a single onboarding checklist

Your checklist should ensure no worker is scheduled until you have:

• completed the right to work check
• confirmed the contract type and working pattern
• explained holiday entitlement and pay arrangements
• captured the data needed for payroll and repeat checks

2. Separate manager tasks from HR controls

Line managers should not be left to interpret immigration evidence or holiday rules on their own. A clearer model is:

• managers request and approve staffing
• HR completes compliance checks
• payroll calculates pay using defined rules
• records are stored centrally

3. Set reminders for repeat checks

For workers with time-limited permission, repeat checks need to happen before the permission expires. Automated alerts reduce the risk of missed dates.

4. Standardise holiday calculations

Irregular-hours holiday calculations should not depend on who is processing payroll that week. Use one approved method, and document how it applies to variable shifts, accrued leave and leave taken.

5. Audit regularly

A monthly or quarterly internal review can highlight:

• missing evidence
• inconsistent holiday balances
• expired right to work follow-up dates
• payroll errors caused by inconsistent timesheet approval

A note on systems and automation

Manual processes are where many compliance gaps start. Spreadsheets can work for small teams, but they become fragile as headcount grows or shift patterns become more complex.

A centralised workflow tool such as WorkThread can help employers keep onboarding, recordkeeping and follow-up tasks in one place, which is useful when many staff have irregular patterns and changing availability.

Practical takeaways

• Complete right to work checks before any work begins.
• Use the correct check route for the person’s immigration status.
• Keep a clear audit trail and diarise repeat checks.
• Track actual hours carefully for irregular-hours staff.
• Separate holiday entitlement from holiday pay in your process.
• Document one consistent holiday calculation method.
• Make managers, HR and payroll clear on their responsibilities.
• Review your records regularly so errors are caught early.

Official guidance to review

For current and authoritative information, check:

• GOV.UK for right to work and holiday entitlement guidance
• ACAS for practical employment law guidance on holiday pay and contracts
• Home Office / GOV.UK for immigration status and right to work processes

If your arrangements are especially complex, it is sensible to seek professional employment law advice.