PTO (Paid Time Off)とは何ですか？

Paid Time Off (PTO) is an employee benefit that provides a pool of paid leave hours or days that employees can use at their discretion for vacation, illness, personal appointments, family matters, or any other reason without requiring justification. PTO consolidates what many older policies administered separately — vacation days, sick days, and personal days — into a single flexible bank. This simplification reduces administrative burden and gives employees more autonomy over how they use their time.

PTO can be structured in several ways. Traditional accrual models accumulate hours at a set rate based on hours worked or length of service (e.g., 0.05 hours per hour worked, equivalent to about 6.5 days per year for a full-time employee). Front-loaded PTO grants the full annual allotment at the start of the year or on a set date. Unlimited PTO policies — increasingly popular in tech and professional services — allow employees to take as much leave as needed with manager approval, though research shows employees often take less leave under unlimited policies due to unclear norms.

U.S. federal law does not require employers to provide paid vacation or sick leave, but a growing number of states and municipalities mandate paid sick leave specifically. As of 2025, over 20 states have mandatory paid sick leave laws with varying accrual rates, employer size thresholds, permitted uses, and carryover requirements. Some states, including California, Illinois, and Maine, treat earned PTO as wages — meaning employers cannot forfeit accrued but unused PTO when an employee leaves without paying it out.