HR for seasonal businesses in the United Kingdom
Reviewed by Mellow Editorial Team, HR & payroll content team
Seasonal businesses face a distinct set of HR challenges: managing sharp increases in headcount for a fixed period, maintaining compliance throughout, and then winding down staff without legal or administrative complications.
Choosing the right contract for seasonal workers
The starting point is deciding which employment status fits your operational model. Fixed-term contracts suit workers hired for a defined period — a six-month summer season, for example. The worker has full employee status, accumulates statutory rights, and the contract ends on the agreed date without the need for a redundancy process, provided the reason for non-renewal is genuine.
Zero-hours contracts offer more scheduling flexibility but come with trade-offs. Workers on zero-hours arrangements are generally classed as workers rather than employees, which limits some statutory rights, but you must still pay at least the National Living Wage, accrue holiday, and comply with pension auto-enrolment rules where relevant. You cannot restrict a zero-hours worker from working elsewhere; exclusivity clauses in zero-hours contracts are unenforceable.
Avoid misclassifying workers as self-employed when the reality of the working arrangement points to employment or worker status. HMRC applies its own tests, and getting it wrong carries liability for unpaid tax and National Insurance.
Payroll and tax obligations from day one
Regardless of contract length, payroll obligations apply from the first payment. You must register as an employer with HMRC before the first payday and operate Pay As You Earn (PAYE) where earnings exceed the relevant thresholds. Income tax is deducted using the personal allowance of £12,570 for the 2026/27 tax year, with rates of 20% (basic), 40% (higher), and 45% (additional rate).
National Insurance applies at 8% for employees on earnings above the primary threshold (with 2% above the upper earnings limit) and 13.8% for employers (category A). A common pitfall with short-season workers is that their annualised earnings may sit below the personal allowance, yet payroll software applies PAYE based on the projected annual figure unless the correct tax code is used. Using a P46 or starter checklist to establish the right code from the outset avoids over-deduction and complaints.
Real Time Information reporting means you must submit a Full Payment Submission to HMRC on or before every payday, without exception. At the end of the tax year, P60s must be issued by 31 May and any expenses or benefits in kind reported on a P11D by 6 July.
Holiday entitlement and pay for short-season workers
Seasonal workers accrue statutory annual leave at the same rate as permanent staff: 5.6 weeks per year, which equates to 28 days (including bank holidays) for someone working a standard five-day week. For a worker on a twelve-week contract, that translates to a proportionate entitlement — roughly 12 ÷ 52 × 5.6 weeks.
The simplest compliant approach for irregular-hours and part-year workers is the 12.07% accrual method applied to hours worked, following updated HMRC and case law guidance. Pay holiday pay at the worker's average weekly pay, calculated over the 52 weeks in which they actually worked (ignoring non-working weeks).
Where workers leave at the end of the season without having taken all accrued leave, you must pay in lieu of outstanding entitlement. Factor this into your seasonal payroll budget.
Statutory rights that apply from day one
The Employment Rights Act 2025, which received Royal Assent in December 2025, introduced several genuine day-one rights that seasonal employers need to be aware of.
From April 2026, Statutory Sick Pay applies from the first day of sickness absence, with no waiting days. There is no minimum service requirement. Budget accordingly: a short-season employee who falls ill in week one is entitled to SSP.
The right to request flexible working is also a day-one right. For seasonal businesses with fixed rotas, you are not obliged to agree to a request, but you must handle it fairly and within the statutory process.
Paternity leave and unpaid parental leave are day-one rights under the Act. Family-leave entitlements and Statutory Maternity Pay rules apply to fixed-term employees in the usual way.
Unfair dismissal is not a day-one right. The qualifying period currently stands at two years. For dismissals on or after 1 January 2027, this reduces to six months. There is no statutory probation period — any probationary arrangement you use is contractual and does not alter the statutory qualifying period.
Managing end-of-season departures
When a fixed-term contract expires on its agreed date, no redundancy payment is owed provided the non-renewal is genuinely because the seasonal need has ceased. If you let someone go mid-contract, you need a contractual right to do so — build a termination clause into fixed-term agreements.
Keep payroll records for at least three years. Conduct final RTI submissions promptly and issue P45s on the last payday. If you plan to re-engage the same workers next season, document the break clearly to avoid arguments about continuity of employment.
---
Run HR and payroll in United Kingdom with Mellow
Mellow brings HR, payroll and 12 AI agents into one platform — built to handle United Kingdom properly, with payroll included, from £4 per employee per month.
- United Kingdom payroll software
[Start a free trial →](/register)