Assumptions and pay data
Pay data: Fire and Rescue pay (NJC). Crew Manager: £42,892 to £44,742 over 2 pay points, rates from 1/7/2026. Checked 4/9/2026.
- Full time is 42 hours a week.
- A 4-day week counts as 80% of full time and a 9-day fortnight as 90%: fewer hours for less pay. Compressed hours, where you work all 42 hours in fewer, longer days, keep full pay, so they need no calculation.
- Term-time only pay is your paid weeks over 52: the weeks you work plus your paid holiday. The box opens at 44.6 weeks (39 term weeks plus 5.6 weeks' holiday), 85.8% of full time, or £36,788 at £42,892.
- Annualised hours divide your yearly hours by 42 × 52 = 2,184. The box opens at 1,400 hours, 64.1% of full time, or £27,495 at £42,892. Annualised hours and Custom FTE stop at 95%.
- Figures are gross, before tax, National Insurance and pension.
Reduced/Compressed Hours Calculator
EnglandFire and rescue authorityFramework from 1/7/2026
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Guide for Fire Safety Officer
This guide explains reduced and compressed working patterns for Fire Safety Officer on Crew Manager at Fire & Rescue. Not every employer offers every pattern; use this for pay impact, then confirm eligibility with HR.
Reduced hours for Fire Safety Officer
This page models named patterns (four-day week, nine-day fortnight, term-time only, annualised hours) for Fire Safety Officer on Crew Manager at Fire & Rescue. Pay is pro-rated from full-time Fire and Rescue pay (NJC) basic pay unless your contract uses a different formula.
Reduced and compressed hours
A four-day week is typically 0.8 FTE. A nine-day fortnight is 0.9 FTE (nine working days in ten). Term-time-only staff are paid for the weeks they work plus their paid holiday, spread across the year. Annualised hours contracts spread agreed hours across the year rather than fixed weekly patterns.
Employer variation
Not every employer offers every pattern. Some use a 0.89 FTE term-time formula for support staff. The calculator uses straightforward pro-rata from full-time band pay; your payroll may differ.
Example scenario
Example: Crew Manager at £42,892 full time. A 4-day week (80%) pays £34,314, the pattern the calculator opens on.
| Band / grade | Crew Manager |
|---|---|
| Full-time gross (example) | £42,892 |
| At 0.8 FTE (example) | £34,314 |
| Annual difference vs full-time | £8,578 |
Frequently asked questions
Is a 4-day week the same as compressed hours?
No. Here a 4-day week means working 4 of your usual days, 80% of full time, so £42,892 becomes £34,314. Compressed hours means fitting your full 42 hours into 4 longer days, and your pay stays the same because your hours do not change.
What does a 9-day fortnight pay?
As reduced hours, 9 days in 10 is 90% of full time: £38,603 a year instead of £42,892, £4,289 less. If you work all 84 hours of the fortnight in 9 days instead, that is compressed hours and your pay does not change.
How is term-time only pay worked out?
From paid weeks: the weeks you work plus your paid holiday, divided by 52. With 39 term weeks and 5.6 weeks' holiday that is 44.6 weeks, 85.8% of full time, or £36,788 instead of £42,892. Your contract or payroll gives your exact number of paid weeks.
How do annualised hours work here?
You enter your contracted hours for the year and the calculator divides them by 2,184, which is 42 hours × 52 weeks. The 1,400 hours it opens with is 64.1% of full time, £27,495 a year. Anything above 95% of 2,184 hours is counted as 95%.
Do reduced hours change my leave and pension?
Yes, in proportion. Paid leave is pro-rated to your hours, and the annual leave calculator for a Fire Safety Officer works it out. Public service pensions are career average schemes, so your pension builds up on the pay you actually earn: 80% of the pay builds 80% of the pension for those years.
Are the results gross or net? Do you store my data?
Unless this page says otherwise, figures are gross (before tax, National Insurance and pension). Your calculator inputs and results stay in your browser and are not stored. We only collect your name and email if you choose to give them, for example to download your results or sign up for email updates. We store them with MailerLite, our email provider, along with the page you were on. See our privacy policy.
About this role
What is a Fire Safety Officer?
A Fire Safety Officer works on prevention, inspections and enforcement. They may work for a fire service or organisation. Pay is on fire or local scales.
Typical demands, progression and balance
Fire safety offers prevention and variety. Pay and satisfaction depend on employer and role. Progression to senior officer or manager is common.
What about 4-day weeks or compressed hours?
Many employers support 4-day weeks, 9-day fortnights, term-time only or annualised hours. Use the calculator above to compare full-time pay with your chosen pattern for your band.
Disclaimer
Illustrative estimates, not financial or career advice. Your payslip and contract decide what you are actually paid.