The £30k salary you see on the offer letter is rarely the £30k cost. Once employer NI, pension, statutory holiday, sick days and recruitment fees are loaded in, you're closer to £42k. Plug in your numbers and find out.
2025/26 UK rates · Class 1 employer NI · 5.6 weeks statutory holiday
15% of every pound over £5,000 since April 2025. On a £30k salary that's £3,750/year before anyone's done a day's work.
5.6 weeks statutory holiday is 12.07% of working hours. £30k salary means £3,621 of unproductive but paid time.
HMRC SSP is £116.75/week but most employers pay full salary for 5-10 days. For a £30k role that's £600+ of pay for no output.
Industry average: 8-12 weeks before a new hire is at full productivity. The salary cost is real; the output isn't.
Job boards, internal HR time, ATS subscriptions, interview hours — typical loaded cost £1,500-£3,000 per hire even without an agency fee.
Statutory notice + redundancy if it doesn't work out. Agency workers don't carry this risk to your business at all.
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