How the 4 on 4 off shift pattern pay works in the UK: average hours, annual hours, and a worked warehouse take-home example with night uplifts for 2026/27.
If you work 4-on-4-off, your pay never looks like a tidy monthly salary. Working out your 4 on 4 off shift pattern pay is hard because some weeks you do three shifts, some weeks four, and a chunk of your hours land on nights and weekends. That makes it genuinely hard to know what you actually earn, and even harder to know whether your rate is fair.
So here is how 4 on 4 off shift pattern pay really works: the average hours, the annual total, and a full worked example for a warehouse worker on £13.50 an hour with night uplifts, using 2026/27 tax and National Insurance.
You work four shifts in a row, then have four days off, on a rolling eight-day cycle that drifts across the calendar week, usually on 12-hour shifts that often alternate between blocks of days and blocks of nights.
Because the cycle is eight days and the week is seven, your shifts land on different days each fortnight. That is why your weekly pay bounces around even though your average is steady.
This is the part that trips people up. On 12-hour shifts, four shifts per eight-day cycle is 48 hours every cycle. Spread that across the calendar and you get:
That is meaningfully more than a standard 37.5-hour week, which comes to about 1,955 hours a year. So before any uplift, a 4-on-4-off worker is doing around 230 extra hours a year, which is the first reason the pattern tends to pay more than its base rate suggests.
One thing to confirm on your own rota: whether your 12-hour shift is 12 paid hours or 11.5 paid hours after an unpaid 30-minute break. Half an hour a shift sounds trivial, but across a year of 4-on-4-off it is roughly 90 hours, which is real money.
It also helps to remember why the average is 42 and not a round 48 or 36. You are working 48 hours across an eight-day block, but the calendar week is only seven days, so each week catches a slightly different slice of your cycle. Over a long enough run it always settles at 42, which is the figure to use for any annual salary comparison, mortgage application or benefit calculation. If a manager tells you the role is “around 40 hours”, the rota maths usually says otherwise, and those two extra hours a week are paid time you should not undersell.
Take a warehouse operative on a £13.50 base rate, working 4-on-4-off at 12 paid hours a shift. Start with base pay only:
Run that through 2026/27 tax:
Now add the night uplift, which is where 4-on-4-off earns its reputation.
Most 4-on-4-off rotas rotate you through days and nights, so a large share of your hours, often close to half, are night hours. Warehouse and manufacturing employers commonly pay a 20% to 25% night uplift.
Take a 20% uplift on £13.50, which is £2.70 extra per night hour. If roughly half your 42 average weekly hours are nights, that is about 21 night hours a week:
So the same £13.50 worker, with a typical night uplift, lands nearer £2,239 a month rather than £2,062. The uplift is doing real work, and it is taxed exactly like the rest of your pay, so there is no special “uplift tax” to fear.
Weekend premiums, where they exist, stack on top of this in the same way. The key point is that on 4-on-4-off your headline base rate undersells your actual earnings, because the long average week and the unsocial-hours uplifts are both pulling in your favour.
Three things decide your 4 on 4 off shift pattern pay, and they matter in this order.
First, your paid hours per cycle, because the long 42-hour average is the foundation everything else sits on. Second, your uplift percentages and the hours they cover, because nights and weekends are where the pattern earns more than its base rate. Third, your base rate itself, which sets the size of every percentage uplift.
People tend to obsess over the third and ignore the first two. But a worker on a £13.00 base with a real 25% night uplift on top can out-earn a worker on £14.00 with the uplift baked into the rate. When you compare two 4 on 4 off shift pattern pay offers, line up all three factors, not just the headline hourly figure.
It is also worth knowing that the uplift is ordinary taxable pay. There is no separate, harsher tax on unsocial-hours money. It goes through your tax code and National Insurance exactly like your base pay, so a 20% gross uplift lands as roughly a 14% boost to your take-home once tax and NI have taken their share.
It pays well when:
It pays badly when:
The single most useful question to ask a 4-on-4-off employer is simple: “Is the night and weekend uplift paid on top of the base rate, or is it already in it?” The answer changes your annual pay by thousands.
If you also work nights as part of the rota, it is worth reading our guide to night shift pay in the UK so you know what uplift you should be getting, and our warehouse take-home pay breakdown for sector-specific numbers.
The tax mechanics behind these examples are stable. The personal allowance is still £12,570 and frozen until April 2028, the basic rate is 20% up to £50,270, and National Insurance is 8% in the main band. A 4-on-4-off worker on £13.50 with uplifts stays comfortably within basic rate.
What moved in April 2026 is the wage floor. The National Living Wage rose to £12.71 for workers aged 21 and over, so any 4-on-4-off base rate below that is now unlawful for adults. £13.50 clears it, but only just, which is why the uplifts matter so much to the real number.
To see your own 4-on-4-off take-home with your real uplifts, hours and tax code worked out for you, the NetPay app does the calculation from your rota. Free to download.
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On 12-hour shifts, 4 on 4 off averages about 42 hours a week. You work four 12-hour shifts in every eight-day cycle, which is 48 hours per cycle, and spread across the calendar that works out at roughly 42 hours a week or around 2,184 hours a year.
It can be, because the long average week and the night and weekend uplifts that usually come with it push gross pay above a standard 37.5-hour role on the same base rate. The trade-off is that a big share of your hours fall on nights and weekends, so check how your uplifts are calculated before judging the rate.
Only if your contract says so. There is no UK law requiring a night premium, but most 4 on 4 off employers in warehousing and manufacturing pay a 20% to 25% uplift on night hours. Always check whether the uplift is built into your base rate or paid on top.
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NetPay UK works out your real net pay after tax, NI, pension and salary sacrifice, for hourly, shift and variable-income workers. Free to download.
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A note on financial advice: NetPay UK calculates take-home pay based on official HMRC tax rules. This article reflects rules in force at the time of publication (19 June 2026). Tax rules change. For complex situations, consult a qualified UK accountant or visit gov.uk/income-tax.
