Picking up an extra shift or working through your break can feel like part of the deal when you’re paid by the hour. But UK law sets clear limits on how many hours you can be asked to work, and clear rights to rest, whatever your rota says. This sits alongside your wider UK pay rights — here’s exactly what’s guaranteed by law on overtime and breaks, and what’s simply down to your employer’s goodwill.

Do you get paid extra for working overtime?

There’s no general legal right to enhanced pay for overtime in the UK. Employers can choose whether to pay extra for working beyond your normal hours, and if they do, the terms should be set out in your contract or a written agreement, according to Acas. What the law does guarantee is that your average hourly rate, including any overtime, must not fall below the National Minimum Wage for your age group across the pay reference period.

If overtime is “guaranteed” in your contract, meaning your employer must offer it and you must work it, the rules are slightly different. Guaranteed overtime that you’ve regularly worked also has to be factored into your holiday pay calculation, not just your basic hours.

The tricky part is proving your average hourly rate stays above minimum wage when your hours change every week. wac logs every shift as you work it, so you can check your real hourly rate at a glance instead of doing the maths from memory at the end of the month.

What breaks are you entitled to during a shift?

If you work more than 6 hours in a day, you’re entitled to one uninterrupted rest break of at least 20 minutes, according to GOV.UK. It doesn’t have to be paid, that depends on your contract, but it can’t be taken at the very start or end of your shift, and it should be a proper break away from your workstation or till.

There’s no automatic right to extra breaks just because your shift runs longer. A 12-hour shift doesn’t legally entitle you to 40 minutes off, though a reasonable employer should consider it. If you’re under 18, the rules are stricter: young workers get a 30-minute break after 4.5 hours of work, and 12 hours’ rest in each 24-hour period.

What about rest between shifts and across the week?

Outside of breaks during a shift, you’re entitled to 11 hours’ uninterrupted rest between finishing one working day and starting the next. Finish at 11pm and you shouldn’t be rota’d back in before 10am. On top of that, you’re entitled to 24 hours off each week, or 48 hours off every two weeks if your employer structures rest that way instead.

If your job genuinely can’t allow for this, for example shift patterns needing round-the-clock cover, your employer has to offer “compensatory rest” of an equivalent length as soon as possible afterwards, rather than skipping it altogether.

The 48-hour working week, and can you opt out?

By law, you can’t be made to work more than 48 hours a week on average, usually averaged over 17 weeks, according to GOV.UK. If you’re over 18, you can choose to opt out of this limit, but it has to be voluntary and in writing, and your employer can’t sack you or treat you unfairly for refusing to sign. You can cancel an opt-out whenever you like too, though you may need to give up to 3 months’ notice depending on your agreement.

What to do if you’re not getting your breaks or you think you’re owed more

Start by keeping your own record of the hours and breaks you’re actually getting, rotas and payslips don’t always tell the full story. Raise it with your employer or manager first, ideally in writing, so there’s a record if you need to take it further. If nothing changes, Acas offers free, confidential advice, and our guide on what to do if you’ve been underpaid walks through the next steps.

FAQs

Can my employer force me to work overtime?

Only if it’s written into your contract as guaranteed overtime. If overtime is voluntary or isn’t mentioned in your contract, you can usually turn it down, though it’s worth checking your specific terms.

Do I get a break if I work a 4-hour shift?

Not automatically. The legal right to a 20-minute break only kicks in once you work more than 6 hours in a day. Shorter shifts are down to your employer’s own policy.

Is overtime pay taxed differently to normal pay?

No, overtime pay is taxed the same way as your normal earnings, through PAYE. It simply adds to your total pay for that period, which can occasionally push part of your pay into a higher tax band for that pay cycle.

What if I’m on a zero-hours contract?

The same break and rest entitlements apply, whatever your contract type. Zero-hours workers get the same 20-minute breaks, 11-hour daily rest, and weekly rest periods as anyone else.

Whatever your rota throws at you this week, the best defence against unpaid overtime and missed breaks is your own record of what you actually worked. wac tracks every shift and break as it happens, so you always know your real hours, and your real hourly rate.