Taking On Summer Staff: A Small Business Payroll Guide to Seasonal Workers

August is peak season for a lot of small businesses - hospitality venues coping with the summer rush, retailers gearing up for back-to-school trade, and farms and visitor attractions making the most of the good weather while it lasts. For many of these businesses, that means bringing in temporary or seasonal staff to cover the extra demand. It's a sensible way to flex your team without committing to permanent headcount, but seasonal workers still come with the same core payroll and employment obligations as anyone else on your books, and it's easy to let the detail slip when you're hiring quickly under pressure.

Seasonal Doesn't Mean Informal

One of the most common misconceptions we come across is the idea that short-term or casual staff can be paid "cash in hand" or kept off the books because the arrangement is only temporary. That isn't the case. Anyone working for your business as an employee, however briefly, needs to be set up properly through payroll, with tax and National Insurance deducted correctly under PAYE from their first day of work. HMRC does not distinguish between a member of staff who stays for six years and one who stays for six weeks when it comes to your basic obligations as an employer.

Right to Work Checks Still Apply

Before anyone starts work, you're required to carry out a Right to Work check and keep evidence of it on file, regardless of how short the placement is expected to be. This applies equally to a student taking on a few weeks of holiday cover as it does to a permanent hire. Skipping this step to save time when you're hiring in a hurry carries real risk - the penalties for employing someone without the right to work in the UK are significant, and "we were short-staffed" is not a defence HMRC or the Home Office will accept.

Holiday Pay for Casual and Seasonal Workers

Holiday pay is an area that trips up a lot of businesses taking on short-term staff, largely because the rules changed in recent years for those working irregular hours. Casual and seasonal workers are still entitled to paid holiday, accrued in proportion to the hours they actually work. For staff on irregular hours or fixed-term contracts of a year or less, holiday pay can now be calculated using a 12.07% accrual method applied to hours worked in each pay period, paid as it accrues rather than saved up for later. Getting this calculation wrong - or forgetting it applies to short-term staff at all - is one of the most frequent payroll errors we see corrected after the event.

Students, Under-18s and National Minimum Wage Bands

Summer is also when many businesses take on students and school leavers for the first time, which means paying close attention to the correct National Minimum Wage band for their age. Rates step up at several age thresholds, and it's the employee's age on the date of each pay period that determines which band applies - not their age when they started. If a seasonal worker has a birthday during their placement, make sure their rate increases from the correct pay period, as this is another area HMRC actively checks.

Auto-Enrolment Still Needs Considering

Even for short-term staff, you still need to assess their eligibility for workplace pension auto-enrolment based on their age and earnings each pay period, and postpone or enrol them accordingly. Many seasonal workers will fall below the earnings threshold for automatic enrolment given the short duration of their employment, but the assessment still has to happen - you can't simply assume it doesn't apply because the role is temporary.

Keeping Records Tidy for a Short-Term Team

Because seasonal roles are often set up quickly and end just as quickly, record-keeping can slip through the cracks - contracts not signed before the first shift, Right to Work evidence filed late, or final pay and holiday not settled promptly when someone leaves. Building a simple checklist for onboarding and offboarding seasonal staff, even a one-page version, makes it far easier to stay consistent when you're hiring several people at once during a busy period.

Planning for Next Season

If this summer has highlighted gaps in how your business handles temporary staff, late summer is a good time to review the process while it's still fresh, rather than waiting until next year's rush to think about it again. A little bit of structure now - a standard offer letter, a simple starter checklist, a clear holiday pay policy for casual staff - pays for itself many times over the next time you need to scale up quickly.

If you'd like a hand setting up a repeatable process for seasonal hiring, or want your current approach checked over, we're happy to help.