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Guide · Shift pay

Night shift pay, explained

Working nights usually pays extra, but the rules live in your contract, not in a statute. Here is how night windows and differentials work, with a worked example. No fluff.

Updated: August 2026

What night shift pay is

Night shift pay (or night differential) is extra pay for the hours you work at night. In the UK and US it is not required by law: it comes from your contract, union agreement or company policy. Only the hours inside the agreed night window earn it, not the whole shift.

Which hours count as night work

The night window is whatever your agreement says. A common window is 10pm to 6am. In the UK, the Working Time Regulations use 11pm to 6am as the default night period, but that only drives working-time limits and health checks, not pay.

6pm10pm2am6am10am
night window (typical)

Night shift, 10pm → 6am. The whole shift sits inside the window: all 8 hours earn the differential, even the 6 that belong to the next day.

8 h with differential

Late shift, 6pm → 2am. Only the part inside the window earns extra; the rest is paid at the base rate.

4 h base rate
4 h with differential

The count goes by hours inside the window, not by whole shifts. Kuadri does it minute by minute.

How much it pays

There is no legal figure: the differential is set in your contract or union agreement. Typical ranges run from about 5% to 20% of the base rate, or a flat amount per hour. Healthcare and manufacturing tend to sit at the higher end.

How to work it out, step by step

  • 1. Count how many hours of the shift fall inside your night window.
  • 2. Multiply those hours by the extra per hour your agreement sets.
  • 3. Add that to the normal pay for the rest of the shift.

A worked example

Shift from 10pm to 6am (8 hours), all inside the window. Base rate £10/hour with a 15% differential, i.e. £1.50 extra per night hour:

Base pay · 8 h × £10£80
Night differential · 8 h × £1.50+£12
Shift total£92
Night pay is separate from overtime and holiday premiums. One night hour on a public holiday can carry several extras at once; your agreement decides how they combine.

How Kuadri works it out

Doing this by hand every month, with rotating shifts and nights that cross midnight, is a chore. Kuadri does it for you: set your night window and differential once and it applies them minute by minute, along with weekend and holiday premiums and overtime. You see the month's gross before payday, and can export to PDF or CSV to check your payslip.

The app is free, works without an account and offline, and has no ads.

Note: this guide is general information, not legal advice. The exact figures and windows come from your contract or collective agreement; check yours.

Work out your night pay without the maths.

The app is free and already on the App Store for iPhone.

Download on the App Store