← Timely Blog

Is working overtime legal?

Last updated on
September 24, 2021

Overtime is a fudgy business. Nobody really wants to broach the subject, but failing to do so in clear terms can lead to staff resentment, confusion and distrust. There are few hard and fast rules, so overtime policies can vary wildly from employer to employer. But there is still a lawful and unlawful way to do it. Here’s what everybody should know about the law and overtime – including when working overtime isn’t legal.

What is overtime?

You may be surprised to know there are actually three different types of overtime:

  • Voluntary
  • Compulsory and guaranteed
  • Compulsory but non-guaranteed

In all cases, “overtime” relates to any time you work in addition to your normal working hours, as defined in your contract. It isn’t an inherently bad thing, offering companies the flexibility to meet unprecedented demand, and employees the opportunity to earn more cash – that is, if overtime is actually paid.

In the case of voluntary overtime, overtime is at the employee’s discretion. Their contract makes no obligation for them to work overtime, so they are not obliged to accept an overtime offer from their employer. An employee should not be penalized for turning overtime down in this set-up.

Compulsory and guaranteed overtime is where an overtime arrangement is written into an employee’s contract, explicitly stating that an employee must accept overtime when it is offered. It’s typically used when your work set-up regularly involves work for a client outside of normal working hours, or on-call duties.

In contrast, with compulsory but non-guaranteed overtime, the possibility of working overtime is written into your contract, but won’t necessarily be offered regularly or at all. Whenever it is, though, employees are obliged to accept it. This is the type employees most commonly encounter; reserved for meeting unprecedentedly high workloads or busy periods in the year.

Overtime arrangements

You are only obliged to work overtime if an overtime provision is directly written into your contract of employment. All terms and conditions of what that overtime entails should be included there too, including any payment rates for overtime, or processes and allowances for taking time off in lieu.

For most people, this arrangement is fairly vague – often just a brief clause in your contract. This is because the exact nature of overtime (like length and frequency) can’t be easily predicted. Employers often contractually word the possibility of overtime in general terms for maximum flexibility.

For those who work on-call, it’s a bit more complex. Whether it qualifies as overtime largely relates to the amount of restrictions put on an employee during an on-call period. But generally, the more restrictions, the more likely it is that a whole period of on-call work should be seen as working.

Overtime pay

Wage theft is a huge issue in the debate around overtime. Surely, if you work additional hours beyond your contract, you should receive some sort of compensation? Interestingly, it actually varies dramatically from country to country.

In the UK, employers are not actually legally obliged to pay employees anything for overtime, so long as the pay they receive for the total hours worked meets minimum wage requirements. Otherwise, employees have no legal right to receive an additional payment or higher rate for overtime.

But in other European countries, like Germany, employees must be allowed to accrue “time in lieu” for overtime. Certain US workers are entitled to overtime pay for working more than 40 hours, as laid out in the Fair Labor Standards Act, which was extended to an extra 1.3 million Americans as of January 2020. Australian law is much more robust in this respect, laying out set rates of overtime pay employers must pay depending on the hours, time of day and days of the week overtime was worked.

Regardless, the terms of overtime pay should be laid out directly in your contract. That includes whether overtime is to be paid and the rate of that pay (like single time or time and a half for weekends, double time for national holidays etc.). The same goes for time off in lieu – when leave can be taken, the process for booking leave and provisions for unused time off should all be clearly defined in your contract.

When it’s illegal to work overtime

Even if you’ve signed an employment contract detailing compulsory overtime, there are cases where legally you can refuse to work it. In the EU, employers are legally bound by the Working Time Directive, which sets limits on the amount of continuous work they can ask employees to perform. The main things to be aware of include:

  • Employees must not work more than 48 hours a week
  • Employees should have 11 hours of uninterrupted rest a day
  • Employess should have a minimum 20-minute break for shifts lasting more than 6 hours
  • Employees must be allowed one day off each week, or two days off a fortnight

There are a few exceptions – including employees working in security, armed forces, emergency services or for themselves. But while certain industries requiring continuous service are allowed to postpone rest periods, employers cannot require workers to work more than 48 hours a week. If you already work 48-hour weeks, any overtime is unlawful. Whenever overtime takes you up to the 48-hour work week threshold, you legally don’t have to work beyond it.

What if employees want to work overtime?

They totally have the choice to do so. Employees can actually opt out of the EU 48-hour week cap. They need to put it in writing that they want to work beyond the 48-hour limit, and have the right to rescind this decision by giving their employer at least 7 days notice. The terms of this employee notice period should also be stated in the written agreement, but should be no longer than three months.

Of course, workers aren’t obliged to opt out of this protection – they shouldn’t be penalized if they choose not to – but many people fear workers are often expected to do so by their employers, making the level of employee choice in the decision a rather gray area. It's not unknown for law firms, for example, to write opt-outs into new employee contracts.

Documenting overtime

While it makes sense for both employees and employers to track overtime – to ensure compliance with a 48-hour week and calculate any overtime pay or time in lieu – tracking overtime is now a legal obligation in the EU. As of May, all employers in the EU need to systematically record the daily working hours of all employees.

The European Court of Justice passed the ruling in an attempt to better protect workers’ rights and health. Only by tracking all working hours, they argue, can employers and employees ensure compliance with EU labor laws. However, individual member states are free to decide how to implement such employee time tracking systems.

Thankfully, there's a whole market of time tracking tools out there to help employees and employers to document all working hours. The most accurate are automatic – which record employee hours to a private timeline for them as they work – but the vast majority of tools remain manual, requiring employees to manage timers as they switch between tasks. For a deeper dive on methods, take a look at the four main types of time tracking software available for documenting overtime.

🌜 Track team overtime automatically

The right way to approach overtime

To ensure overtime doesn’t destroy your company culture:

  • Be open about your overtime policy – don’t let it just sit hidden in employee contracts. Everyone should be clear on what to expect from working overtime.
  • Minimize the need for overtime – address the broken work processes, unrealistic project estimations, unrealistic client expectations and poor time management that leads to unexpected overtime.
  • Monitor how much time your organization spends on overtime – you can’t manage overtime better without knowing what it currently looks like (besides, tracking it is now a legal obligation!).  

Ultimately, overtime should be a choice and positive opportunity for workers. It should be something you offer and control – not a regrettable and resented regular feature of your workplace.


  • Overtime is contractual – you are only legally bound to work it if it’s in your contract
  • Any provisions for overtime pay need to be clearly stated in your contract
  • Overtime needs to be paid where the total number of hours an employee works falls short of minimum wage requirements
  • Employees legally don’t have to work more than 48 hours a week, unless they opt out
  • Employers are responsible for ensuring workers receive legal obligations for rest
  • All employee working hours in the EU must be recorded

🙌🏾 Will time tracking hurt your culture?

Try Timely for free!
Discover the power of Timely's automated time tracking with a 14-day free trial
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Trusted by 5000+ businesses globally
Free 14-day trial — No credit cards needed
Reduce time tracking admin by 75%
Designed by vikings in Oslo, Norway 🇳🇴
Copyright 2021 Memory AS