Unlimited PTO is the policy that sounds like a benefit and acts like a tax. The data has been clear for several years now: teams on unlimited take less leave than teams on explicit allowances. The reasons are subtle and worth understanding before you adopt it.
Why unlimited produces less leave
- No anchor. With "20 days", an employee’s baseline expectation is 20. With "unlimited", the baseline is whatever the median person takes — which is invariably less than the explicit allowance.
- Social pressure. People watch what their peers take, and the implicit ceiling tends to settle below the explicit one.
- Negotiating cost. Asking for "two weeks" is uncontroversial. Asking for "twenty days when nobody else has taken twenty" feels presumptuous.
- Dispute-free at the cost of guidance. Managers no longer feel they can say "you should take more" because there’s no rule to enforce.
Why unlimited persists anyway
Two reasons, both about the company rather than the employee. First, the accounting upside: unlimited has no balance-sheet liability. Second, the recruiting optics: it sounds generous in a job description even when it isn’t in practice.
What to do instead
A defined-allowance policy with a minimum floor. The wording that matters:
Every employee will take at least 12 days of paid leave per calendar year. We track usage; if you reach Q4 having taken less than 12 days, we’ll proactively schedule it with you.
The minimum is the magic. It removes the ambiguity that depresses unlimited usage, gives managers explicit permission to push, and signals seriousness. The defined allowance above the floor (20, 24, 28 days) is now an upper bound rather than a target.
If you’re already on unlimited and want to switch
Don’t do it as a take-away. Frame it as "we’re adding a floor of 12 days that everyone must take" with the upper bound left effectively unlimited (or set generously, e.g. 30). You get the floor’s usage benefits without anyone perceiving it as a benefits cut.