Unlimited PTO: Why Staff Take Less Holiday, Not More

"Unlimited holiday." Two words that sound like every employee's dream. No more counting days, no more anxious calculations in November about whether you can squeeze in that last long weekend, no more guilt about taking a day off to watch your child's nativity play. Just take what you need, whenever you need it. What could possibly go wrong?

Quite a lot, as it turns out. A growing body of evidence suggests that unlimited paid time off (PTO) policies - once championed by Silicon Valley startups and now creeping into UK businesses - frequently result in employees taking less holiday than they would under a traditional fixed allowance. The very policy designed to signal trust and flexibility often creates an invisible pressure that keeps people chained to their desks.

How Unlimited PTO Works (In Theory)

Under an unlimited PTO policy, employees do not receive a fixed number of annual leave days. Instead, they are told they can take as much holiday as they like, provided their work is done and their manager approves the request. There is no accrual, no balance to track, and no end-of-year scramble to "use it or lose it."

The pitch to employees is freedom and autonomy. The pitch to employers is simpler administration (no leave balances to manage) and, crucially, no obligation to pay out accrued but unused holiday when an employee leaves - because there is nothing to accrue. That last point is often the quiet part that HR consultants say loudly behind closed doors.

The Evidence: People Take Less Holiday, Not More

Multiple surveys and studies have reached the same conclusion: unlimited PTO reduces the amount of holiday employees actually take.

A 2022 study by the employment platform Namely found that employees with unlimited PTO took an average of 12.09 days off per year, compared to 11.36 days for those with traditional policies - a negligible difference that suggests "unlimited" barely shifts behaviour and both groups take far less than typical UK statutory entitlement.
Research by Glassdoor found that 54% of American workers with unlimited PTO felt unable to fully disconnect from work during time off, compared to 42% of those with fixed allowances.
A MetLife survey found that employees with unlimited PTO were more likely to report feeling guilty about taking holiday and were more likely to check emails and take calls during time off.
Travis CI, one of the first tech companies to adopt unlimited PTO, eventually reversed the policy. CEO Mathias Meyer explained: "When people are uncertain about how many days it's acceptable to take off, they tend to take the safest option - which is less."

Why It Backfires: The Psychology of Ambiguity

1. No Anchor, No Permission

A fixed leave allowance - say, 28 days - serves as a psychological anchor. It tells the employee: "This is what is normal. This is what we expect you to take." Without that anchor, employees have no benchmark. They look around the office, see that nobody else seems to be taking much holiday, and conclude that taking three weeks off would be excessive. The "unlimited" policy has no floor, so the implicit floor becomes whatever the least-holiday-taking colleague sets it at.

2. The Guilt Machine

When everyone has the same 28-day pot, taking holiday is a right - something you have earned and are expected to use. Under unlimited PTO, every day off feels like a favour you are asking for. The internal monologue shifts from "I'm using my entitlement" to "Am I taking too much?" Managers may not intend to create this guilt, but the ambiguity of the policy does it for them. Employees, particularly newer or more junior staff, self-censor to avoid appearing lazy or uncommitted.

3. Performance Pressure Replaces Holiday Counting

"Take as much as you like, as long as your work is done." That qualifier - "as long as your work is done" - is where the trap lies. In a high-performance culture, work is never truly done. There is always another ticket, another sprint, another client request. The message employees hear is: "You can take holiday, but your output will be judged, and nobody will lower their expectations because you were away." This is especially corrosive in companies that also practice stack ranking or performance-based bonuses.

4. Manager Inconsistency

Without a formal policy, individual managers become the arbiters of what is "reasonable." One manager might encourage their team to take four weeks. Another might raise an eyebrow at anyone who takes more than two. This creates inequity across departments and means that your holiday experience depends on the personality of your line manager rather than a fair, consistent policy.

5. Discrimination by Stealth

Research consistently shows that certain groups are more affected by unlimited PTO guilt than others. Women, ethnic minorities, first-generation professionals, and employees from lower socioeconomic backgrounds are more likely to self-censor their holiday usage, fearing that taking time off will confirm negative stereotypes or jeopardise their position. What looks like an egalitarian policy on paper can widen existing workplace inequalities in practice.

The Burnout Connection

The link between inadequate rest and burnout is well established. The World Health Organisation defines burnout as an occupational phenomenon resulting from "chronic workplace stress that has not been successfully managed," characterised by exhaustion, cynicism, and reduced professional efficacy. Annual leave is one of the primary mechanisms for managing that stress - stepping away, recovering, and returning with renewed energy.

When unlimited PTO suppresses actual holiday-taking, it removes this critical safety valve. The irony is painful: companies adopt unlimited PTO partly to signal that they care about employee wellbeing, but the policy's practical effect is to create the conditions for burnout. Employees work more, rest less, feel guilty when they do rest, and eventually reach the point of chronic exhaustion.

A 2023 Deloitte survey found that 77% of respondents had experienced burnout at their current job, and that "always-on" culture and lack of genuine time off were among the top contributing factors. Companies with high burnout rates experience higher turnover, lower productivity, more sick leave, and worse customer outcomes - the exact problems that "unlimited holiday" was supposed to solve.

The UK Legal Angle

UK employers considering unlimited PTO need to navigate the Working Time Regulations 1998, which guarantee workers a minimum of 5.6 weeks (28 days for full-time employees) of paid annual leave per year. This statutory entitlement cannot be replaced, waived, or subsumed into an "unlimited" policy.

In practice, this means:

Even with an unlimited PTO policy, the employer must ensure that every employee takes at least 28 days (or the part-time pro-rata equivalent) of paid leave per year.
The employer must still track leave to demonstrate compliance with the Working Time Regulations. "We don't count days" is not a defence in a tribunal.
If an employee leaves the business mid-year, the question of whether they have accrued holiday entitlement becomes complicated. Under a fixed allowance, the calculation is straightforward: days accrued minus days taken equals payment owed. Under unlimited PTO, there is nothing to accrue - which may save the employer money but could be challenged as an attempt to circumvent statutory holiday pay obligations.
The carry-over rules still apply. If an employee cannot take their statutory leave due to sickness, the employer must allow carry-over regardless of any unlimited PTO wording.

Legal Warning

An unlimited PTO policy does not remove the employer's obligation to ensure employees take their statutory minimum leave. If an employee takes only 15 days in a year under an "unlimited" policy and later brings a Working Time Regulations claim, the employer - not the employee - is at fault. You must actively monitor and encourage minimum compliance.

Companies That Reversed Course

Several high-profile companies have tried unlimited PTO and abandoned it after seeing the unintended consequences:

Travis CI switched to a fixed minimum of 25 days per year after finding that unlimited PTO led to people taking less time off and feeling uncertain about what was acceptable.
Kickstarter dropped unlimited PTO in favour of a generous but fixed 25-day policy, citing the need for clarity and fairness.
CharlieHR, a UK HR software company, experimented with unlimited PTO and reversed it after observing the guilt and inconsistency problems firsthand. They now mandate a minimum number of days off.

The pattern is consistent: companies adopt unlimited PTO with good intentions, discover that it reduces actual holiday-taking and creates inequity, and eventually return to a structured policy - often with a more generous fixed allowance than they had before.

What Works Better

If the goal is genuinely to help employees rest and avoid burnout, the evidence points to several more effective approaches:

1. A Generous Fixed Allowance

Offer more than the statutory minimum. Many competitive UK employers now offer 30 to 35 days (including bank holidays) as standard. A fixed number provides clarity, removes guilt, and gives employees an entitlement they feel confident using. It also simplifies administration and legal compliance.

2. Minimum Holiday Requirements

If you want to keep unlimited PTO, pair it with a mandatory minimum. Some companies require employees to take at least 20 or 25 days per year, with managers accountable for ensuring their team hits the minimum. This preserves the "flexible" branding while providing the anchor that prevents under-usage.

3. Company-Wide Shutdowns

Scheduled shutdowns - for example, the week between Christmas and New Year, or a week in August - remove the guilt entirely. If the whole company is off, nobody feels singled out. Several tech companies now mandate quarterly "recharge weeks" where the entire organisation closes.

4. Active Leave Monitoring

Regardless of policy type, track how much leave each employee is actually taking. If someone hasn't taken a day off in three months, that's a red flag - not a sign of commitment. Use a dedicated leave tracker rather than spreadsheets, so that leave patterns are visible and actionable.

5. Lead by Example

If senior leaders never take holiday, their teams will not either, regardless of the formal policy. Managers who visibly take time off, who do not send emails on holiday, and who encourage their reports to disconnect are the single most effective intervention against burnout culture.

The Employer's Real Motivation

Let us be honest about one of the less-discussed reasons unlimited PTO is attractive to employers: it eliminates the accrued leave liability on the company's books. Under a fixed allowance, unused holiday days represent a financial obligation. The company must pay them out when someone leaves or carry the liability on its balance sheet. Under unlimited PTO, there is no accrual and therefore no liability. For a company with 200 employees, eliminating this liability can represent a significant financial saving.

This is not inherently wrong, but it is worth being transparent about. If a primary driver for adopting unlimited PTO is financial rather than cultural, the policy is less likely to be implemented with the safeguards needed to prevent under-usage. The companies that make unlimited PTO work are the ones that genuinely invest in the cultural infrastructure - mandatory minimums, manager training, shutdown periods - rather than simply removing the accrual line and calling it "trust."

The Bottom Line

Unlimited PTO is not necessarily a scam, but it is frequently a policy that delivers the opposite of what it promises. Without explicit minimums, active monitoring, and a culture that genuinely values rest, it tends to reduce holiday usage, increase guilt, widen inequity, and contribute to the burnout culture it claims to combat. For most UK small businesses, a generous fixed allowance - tracked with proper software rather than a spreadsheet - will deliver better outcomes for both employees and the business.

Whatever your policy, the critical thing is to actually know how much leave your team is taking. If you are still managing leave in a spreadsheet or via email, you are almost certainly missing patterns that matter. A purpose-built leave tracker gives you visibility, catches problems early, and ensures you stay on the right side of UK employment law.

Track Your Team's Leave the Easy Way

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