Sick leave vs PTO: sick leave is time off set aside for illness, medical appointments or caring for a sick family member. PTO (paid time off) is usually one combined bank of paid hours you can use for vacation, personal days or sickness. Some employers offer both; others fold sick time into a single PTO bank.
What do sick leave and PTO mean at work?
Sick leave is designed for health needs. You use it when you are ill, injured, seeing a doctor or caring for a family member who is sick. Some sick leave laws also cover time off related to domestic violence.
PTO is broader. It is a single pool of paid time that you can use for almost any reason: a vacation, a moving day, a school event or a sick day. You don’t usually have to explain why you’re using it, though you may need to request it in advance.
Companies choose one of two common models:
- Separate buckets: for example, 15 vacation days and 6 sick days, each tracked on its own.
- Combined PTO bank: for example, 20 PTO days for any purpose.
Sick leave vs PTO: side-by-side
| Sick leave | PTO | |
|---|---|---|
| What it’s for | Illness, medical care, caring for sick family | Any reason, including vacation and sickness |
| Advance notice | Often same day, since illness isn’t planned | Usually requested ahead for planned time |
| Required by law? | Required in some states and cities; not by federal law for most private employers | Generally not required; employer benefit |
| Payout when you leave | Often not paid out, unless state law or policy says so | Payout depends on state law and company policy |
| Documentation | A doctor’s note may be requested after several days, within legal limits | Usually no reason needed |
What US law says
No federal law requires most private employers to offer paid sick leave or paid vacation. The Fair Labor Standards Act doesn’t require either. A growing number of states and cities do require paid sick leave, including California, New York and Washington. Federal contractors may have their own requirements. Rules on who qualifies, how fast leave builds up and how it can be used differ from place to place, so check your state labor department for the law where you work.
The Family and Medical Leave Act (FMLA) is different. It gives eligible employees up to 12 weeks of unpaid, job-protected leave in a 12-month period for serious health conditions and certain family reasons. Employers may let or require you to use paid leave at the same time.
Examples in emails and messages
Slack to manager: “Woke up with a fever, taking a sick day. I’ll check messages if anything urgent comes up.”
PTO request: “Requesting PTO for June 10–14 for a family trip. My projects will be covered by Jordan.”
HR email: “Our policy combines vacation and sick time into one PTO bank of 18 days per year.”
Employee to HR: “If I use sick leave for my child’s doctor visit, does that come from PTO or a separate bucket?”
How to use sick leave and PTO correctly
- Read your handbook. It explains whether you have separate buckets, how much you earn and how to request time.
- Know how it builds up. Many plans add hours each pay period. See PTO accrual.
- Follow call-in rules for sick days. Tell your manager as early as you can.
- Plan vacation PTO in advance. Busy seasons may have blackout dates.
- Check carryover and payout rules. Some plans cap or reset balances each year.
- Know your local law. State or city rules may give you more rights than company policy.
Related terms
See more in our HR, Hiring and Leave hub.
FAQ
Is sick leave the same as PTO?
Not always. Sick leave is meant for health needs. PTO is a broader bank of paid time for any reason. Some employers combine them into one PTO bank.
Is paid sick leave required by law?
Federal law does not require most private employers to provide paid sick leave, but several states and cities do. Check the rules where you work.
Do I get paid for unused sick leave when I quit?
Often not, unless your state law or company policy requires it. Unused PTO payout rules also vary by state and employer.
Can my employer ask why I am using PTO?
Employers usually don’t need a reason for PTO, but they can set request and approval rules. For sick leave, they may ask for limited documentation in some cases.
Is FMLA leave paid?
FMLA leave is unpaid, but it is job-protected. Employers may allow or require you to use paid sick leave or PTO during FMLA leave.
Sources
This article is general information, not legal or tax advice. Check with a qualified professional for your situation.
