Unlimited holiday sounds generous, but evidence consistently shows employees take less leave under unlimited schemes than under defined allowances. The UK statutory minimum of 5.6 weeks still applies regardless of policy wording, and employers must still track leave to prove that minimum is met. For most UK SMEs, a clearly defined and well-managed allowance outperforms unlimited in practice.
What unlimited holiday allowance actually means
There is no standard legal definition of unlimited holiday in the UK. In practice, it describes a discretionary arrangement under which an employer removes the formal annual leave cap and allows employees to take time off as needed, subject to manager approval and business needs.
The exact framing varies between companies. Some describe it as "trust-based" leave, some as "flexible leave" and some use the term "unlimited" directly. What they share is the removal of a defined numerical allowance from the employment contract, replaced with a principle that leave will not be tracked or capped.
What all these variants have in common is that they are layered on top of the statutory entitlement under the Working Time Regulations 1998. That entitlement cannot be contractually removed, as the next section explains.
The UK legal position: the statutory floor still applies
Under the Working Time Regulations 1998, most workers in the UK are entitled to a minimum of 5.6 weeks of paid annual leave per leave year. For a worker on a standard five-day week, that is 28 days, which can include the eight bank holidays in England and Wales.
This minimum cannot be contracted out of. An employer that introduces an "unlimited" holiday policy does not remove the statutory entitlement: it simply replaces a contractual cap with a discretionary arrangement. The 5.6 weeks still operate underneath.
The practical implications of the statutory floor for unlimited schemes are significant:
- Holiday pay for the statutory 5.6 weeks must reflect normal remuneration, not just basic salary. If a worker receives regular overtime, commission or bonuses, those must be included in the holiday pay calculation under the Supreme Court's ruling in Brazel v Harpur Trust [2022] UKSC 21 and the subsequent Working Time Regulations amendments. See the guide to how holiday pay is calculated for the full method.
- Statutory leave that is not taken because the employer made it unreasonably difficult carries forward and accrues. If someone on an unlimited scheme cannot take leave because of sickness, statutory carry-forward rules apply to the Regulation 13 entitlement (four weeks) for at least 18 months.
- On termination, accrued but untaken statutory leave must be paid out as holiday pay in lieu. Under a true unlimited scheme with no recorded balance, calculating the leaver's entitlement requires the employer to establish what they actually took, which without records may be impossible.
Where the model came from: the Netflix effect
Netflix introduced unlimited leave in 2004 as part of its broader "Freedom and Responsibility" culture document, which became one of the most-read internal strategy presentations in Silicon Valley history. The underlying logic was that Netflix hired responsible adults, that tracking hours and holidays was treating employees like children, and that outcomes mattered more than presence.
Several large technology and media companies followed: LinkedIn introduced it, Virgin announced it publicly in 2014 (for the holding company team), and hundreds of UK startups adopted it as a talent attraction signal in the 2010s. By the early 2020s, it was a recognisable benefit in job adverts, particularly in technology, media and professional services.
What received significantly less coverage than the announcements was what happened in practice. LinkedIn quietly moved away from unlimited leave and reintroduced a defined allowance. Netflix itself introduced a required minimum for some employee groups. Several of the UK startups that had adopted the model reported that it had not functioned as intended and quietly stopped advertising it as a benefit.
What the research actually shows
The consistent finding from companies and researchers that have studied unlimited leave in practice is the opposite of what the policy intends: employees under unlimited schemes typically take less leave than those with a defined allowance.
HR analytics company Namely, which analysed leave data from hundreds of US companies, found that employees under unlimited PTO policies took an average of 13 days per year, compared with 15 days under traditional defined-allowance policies. CIPD and Chartered Management Institute research in the UK context consistently finds that absence of a clear entitlement increases leave anxiety, not leave freedom.
| Factor | Defined allowance | Unlimited leave |
|---|---|---|
| Average days taken (research evidence) | Around 15 days per year (Namely, US data) | Around 13 days per year (Namely, US data) |
| Leave anxiety | Lower: entitlement is explicit and documented | Higher: social norms replace policy clarity |
| Equality of access | Consistent: all employees have the same entitlement | Unequal: confident, senior or well-liked employees tend to take more |
| Cover planning | More predictable: managers can plan against known allowances | Less predictable: harder to set capacity limits when volume is unknown |
| Leaver calculation | Straightforward: accrued balance is known | Complicated: requires reconstruction of leave taken without a defined entitlement |
| Manager burden | Lower once a system is in place | Higher: each request requires a judgement call with no anchor |
The headline finding is counterintuitive but well-documented: removing the cap reduces leave taken. The mechanism is social, not logistical.
Why employees take less leave, not more
The gap between "you can take what you need" and "I feel comfortable taking what I need" is where unlimited leave policies regularly fail. Several mechanisms drive the shortfall.
The anchor removal problem
A defined allowance of, say, 25 days gives employees an implicit permission structure. They know they are entitled to those days. They plan holidays, book travel and request leave against a number they own. Remove the number and that permission structure disappears. In its place is a question that most employees resolve conservatively: "How much is reasonable here?" The answer almost always lands below what a defined entitlement would have given.
Social comparison and the unspoken norm
When no one knows how much leave is "expected", employees watch what colleagues and managers actually take and calibrate to that. In high-performance cultures, or cultures where senior staff model long hours, the unspoken norm quickly becomes low leave consumption. The theoretical freedom of unlimited leave collapses into a social norm that is often more restrictive than a formal policy would be.
The approval anxiety effect
Under a defined allowance, an employee who has not used a day of their 25 days knows they are entitled to request any of those days. Under unlimited leave, every request requires a fresh justification and manager approval with no external anchor. Many employees, particularly those who are more junior or in roles with heavy workload, simply request less because each request feels like asking for a favour rather than exercising a right.
Carry-forward psychology
A defined allowance creates an implicit deadline: unused days at the year end (in the absence of carry-forward) are lost. For many employees, that deadline is a genuine motivation to book and take leave. Unlimited leave removes that motivator. There is no urgency to book days you do not have a finite supply of.
Legal and contractual questions for UK employers
Beyond the practical outcomes, unlimited leave creates several legal and contractual questions that employers should resolve before introducing it.
Whether you run a defined allowance or an unlimited scheme with a required minimum, every approved request is recorded automatically alongside the leave type. Days used and days remaining are at a glance for every team member, so compliance and leaver calculations are never a reconstruction exercise.
See how it works →When unlimited leave might work
Unlimited leave is not universally ineffective. There are circumstances where it produces genuinely positive outcomes.
The common thread among companies that report it working well is that unlimited leave is paired with active management of leave use, not passive permission to take it. The policy works when:
- Senior leaders visibly model taking generous leave and communicate explicitly that this is expected. The CEO taking two weeks in August matters more than the policy document.
- A stated minimum is included: "You should take at least 25 days" alongside "there is no formal cap" removes the anchor problem and sets a floor that makes the social norm explicit rather than subject to individual interpretation.
- Managers actively track and encourage leave use, monitoring who has not taken a break in three months and raising it in one-to-ones rather than waiting for requests.
- The organisation is small, flat and trust-based, with genuinely high levels of autonomy and low levels of hierarchical social pressure. A five-person agency may have the culture for it; a 200-person company with mixed management quality almost certainly does not.
- Compensation is above-market and performance expectations are very high: the Netflix model is predicated on paying significantly above market rates, which changes the psychological relationship employees have with requesting leave.
For most UK SMEs operating with mixed management capability, defined workloads and moderate rather than exceptional compensation, these conditions are rarely all present.
Practical alternatives for UK SMEs
If the goal behind unlimited leave is to signal trust, reduce bureaucracy and improve wellbeing, there are approaches that achieve those goals more reliably than removing the cap entirely.
Specific alternatives worth considering:
- Increase the defined allowance. If the instinct behind unlimited leave is to be more generous, a move from 25 to 28 or 30 days is simpler, more certain and more appreciated than removing the cap. Employees know what they have, they plan against it and they use it.
- Add a "use it or lose it" policy with a short carry-forward window. A one-month carry-forward limit creates the year-end deadline that motivates leave use without the complexity of unlimited. See the carry-forward policy template for ready-to-use wording.
- Set a minimum leave requirement. Rather than removing the cap, add a floor: all employees must take at least 25 days per year, with the option to take more on request. This addresses the underuse problem directly and is genuinely unusual enough to stand out in recruitment.
- Address the culture, not the policy. If the root issue is that employees feel unable to take their existing entitlement, that is a management problem, not a policy problem. Changing the number in a policy document does not fix a culture where taking leave is implicitly discouraged. Active manager behaviour, explicit encouragement and visible senior leave use will do more than policy rewording.
- Build good leave visibility into the team's tools. When every team member can see who has approved leave coming up, who has a lot of days remaining and who has not had a proper break in months, leave becomes a managed part of how the team operates rather than a private negotiation between individuals and their managers.
Book Time Off shows every team member's allowance, days used and days remaining at a glance. Set a custom allowance per person, view the whole team on a calendar or wallchart, and approve or decline requests with one click from the notification email. The operational case for unlimited leave often comes down to removing admin; this removes the admin while keeping the clarity.
Start free trial →The broader goal of treating employees as responsible adults who manage their own time is entirely achievable with a defined allowance, good tooling and a culture where managers model and encourage leave use. Unlimited leave is a mechanism for that goal; it is not the goal itself, and it is not the most reliable mechanism available.
For practical guidance on managing leave requests and planning team cover, see the guide on how to handle holiday clashes at work and the staff holiday management guide for UK small businesses.
Sources and further reading
| legislation.gov.uk | Working Time Regulations 1998 (SI 1998/1833) |
| legislation.gov.uk | Employment Rights Act 1996, s.23 (holiday pay claims) |
| GOV.UK | Holiday entitlement: overview |
| GOV.UK | Holiday pay: the basics |
| ACAS | Holiday entitlement and pay |
| ACAS | Employment contracts and policies |
| UK Supreme Court | Harpur Trust v Brazel [2022] UKSC 21 (holiday pay calculation) |
| CIPD | Health and Wellbeing at Work survey (annual) |