PTO vs Vacation vs Sick Leave: What's the Difference?
Updated June 6, 2026
These terms are often used interchangeably, but they mean different things — and how you structure them affects flexibility, fairness, and payout. Here's the difference and how to choose.
The definitions
Vacation leave is paid time off specifically for rest and personal travel. Sick leave is paid (or unpaid) time off reserved for illness, injury, or medical appointments. PTO (Paid Time Off) is a combined bank that employees can use for any reason — often pooling vacation, personal, and sometimes sick days into one balance.
So 'PTO' is usually the umbrella; 'vacation' and 'sick leave' are specific buckets that PTO may or may not combine.
Combined PTO vs separate balances
The big decision is whether to merge everything into one PTO bank or track vacation and sick leave separately. Each approach has trade-offs.
| Consideration | Combined PTO | Separate balances |
|---|---|---|
| Flexibility | High — one bank, any reason | Lower — each has its own rules |
| Sick-day pressure | Lower stigma to take time | Sick time is clearly protected |
| Tracking | Simpler — one balance | More granular reporting |
| Payout on exit | Often the whole PTO bank | Often vacation only |
Which should you choose?
Combined PTO suits teams that value simplicity and flexibility. Separate balances suit employers who want sick time clearly protected (or who operate where paid sick leave is legally mandated and must be tracked distinctly).
Whatever you choose, document accrual, carryover, and payout rules per balance so the policy is unambiguous.
Orvella supports combined PTO or fully separate leave types, each with its own accrual, carryover, and payout rules — so your structure is enforced automatically.
Frequently asked questions
Is PTO the same as vacation?
Not exactly. Vacation is time off for rest; PTO is usually a broader bank that can include vacation, personal, and sometimes sick time in one balance.
Should sick leave be separate from PTO?
Often yes — especially where paid sick leave is legally required, since it may need to be tracked and protected separately from vacation.
Is unused sick leave paid out?
Usually not. Many policies and laws pay out unused vacation on termination but not sick leave — check your local rules.