Emergency Exit Door Requirements:
What OSHA and the Fire Code Say
An emergency exit door has to open from the inside in one motion, with no key, tool, or special knowledge. If it serves a room for 50 or more people, it has to swing outward, in the direction people are walking. And it can never be locked, chained, or blocked while the building is in use.
Key takeaways
- Exit doors must open from inside with no key
- Doors for 50 or more people swing outward
- At least 32 inches clear and 80 inches high
- Never lock, chain, or block an exit
- Exit signs and emergency lights get tested monthly
Those are the big three. The rest covers door size, panic hardware, exit signs, emergency lighting, and how many exits a space needs. The rules come from OSHA for workplaces, and from the International Building Code (IBC) and NFPA 101, the Life Safety Code, which most cities and fire marshals enforce. Your local code may add to them, so check with your fire department too.
Exit Door Requirements at a Glance
| Requirement | The rule | Where it comes from |
|---|---|---|
| Opening from inside | Must open from the inside at all times, with no key, tool, or special knowledge | OSHA 1910.36(d) |
| One motion | Latch and lock must release with one motion. No separate deadbolt that needs a second step | IBC |
| Hardware height | Handle or push bar 34 to 48 inches above the floor | IBC |
| Door type | Side-hinged | OSHA 1910.36(e) |
| Swing direction | Swings in the direction of exit travel when the room holds more than 50 people or is a high hazard area | OSHA 1910.36(e)(2), IBC |
| Clear width | At least 32 inches with the door open 90 degrees | IBC |
| Clear height | At least 80 inches | IBC |
| Exit route width | At least 28 inches at every point | OSHA 1910.36(g)(2) |
| Opening force | 5 pounds or less for interior non-fire doors. Exterior and fire doors can be heavier | IBC, ADA |
| Clear path | Nothing stored in the exit route, even for a short time | OSHA 1910.37(a)(3) |
| No lockable rooms | The path to an exit can't go through a room that locks, like a bathroom | OSHA 1910.37(a)(3) |
| Visibility | No decorations or signs that hide the door. Not hidden behind curtains or mirrors | OSHA 1910.37(b)(3), IBC |
How many exits does a space need?
OSHA requires at least two exit routes in a workplace, so people can still get out if one is blocked. The IBC sets the minimum by occupant load:
| People the space is designed for | Minimum exits |
|---|---|
| Up to 500 | 2 (some small rooms under 50 may have 1) |
| 501 to 1,000 | 3 |
| More than 1,000 | 4 |
The exits also have to be spread apart, so one fire can't block both. Under the IBC, two exits must be at least half the diagonal of the space apart, or one third if the building has sprinklers.
Occupant load is the floor area divided by a factor for the type of use. For example, offices use 150 square feet per person, while a room with chairs only uses 7 square feet per person.
How Emergency Exit Doors Are Equipped
Panic hardware (push bars)
A panic bar runs across the door. Push anywhere on it, and the latch releases, so a crowd pressing against the door can open it instead of getting stuck. Under the IBC, panic hardware is required on latching exit doors in assembly spaces with 50 or more people, such as restaurants, churches, and auditoriums. Schools and high-hazard areas have their own panic hardware rules, and many businesses add it even when it isn't required.
OSHA allows a panic bar that locks only from the outside on exit discharge doors. Anyone inside can always get out, but nobody can walk in from the street.
Door closers
Most exit doors that are also fire doors have a closer, so the door shuts and latches on its own. A fire door only works if it's closed.
Fire doors and hold-open devices
Exit stair doors and doors in fire-rated walls are fire-rated assemblies. They have to close and latch, can't be modified, and must never be wedged open. If a building wants them open during the day, it can use magnetic hold-open devices tied to the fire alarm. When the alarm goes off, the magnets release and the doors close.
Delayed egress locks
Stores, warehouses, and other buildings that worry about theft sometimes use a delayed egress lock. Push the bar and an alarm sounds right away, then the door unlocks after a set delay. The rules are strict:
- The building must have sprinklers or automatic fire detection throughout.
- The delay is 15 seconds, or up to 30 seconds if the fire marshal approves.
- The door must unlock right away if the fire alarm or sprinklers go off, or if power fails.
- A sign on the door must read: PUSH UNTIL ALARM SOUNDS. DOOR CAN BE OPENED IN 15 SECONDS.
- Under the IBC, they're not allowed on exit doors in assembly, school, or high-hazard spaces.
Door alarms
A local alarm that sounds when someone uses an exit door is fine, as long as it doesn't stop the door from opening. OSHA says exit route doors must be free of any device or alarm that could restrict emergency use.
What's not allowed
- Padlocks, chains, or bars across the door.
- A separate deadbolt or slide bolt that needs a second motion to open.
- Any lock that needs a key, code, or card to get out.
- Wedges or kick-down stops holding a fire door open.
Exit Signs and Emergency Lighting
An exit door nobody can find in the dark doesn't help much. Signs and emergency lights are part of the same rules.
| Item | The rule | Where it comes from |
|---|---|---|
| Exit sign lettering | The word EXIT in letters at least 6 inches high, with strokes at least 3/4 inch wide | OSHA 1910.37(b)(7) |
| Exit sign lighting | Lit to at least 5 foot-candles by a reliable light source | OSHA 1910.37(b)(6) |
| Doors that aren't exits | Any door that could be mistaken for an exit is marked "Not an Exit" or with what it is, like "Closet" | OSHA 1910.37(b)(5) |
| Emergency lighting run time | At least 90 minutes after normal power fails | NFPA 101, Section 7.9 |
| Emergency lighting brightness | Average of 1 foot-candle along the exit path, and at least 0.1 at any point | NFPA 101, Section 7.9 |
| Monthly test | 30-second test of each emergency light | NFPA 101, Section 7.9 |
| Yearly test | Full 90-minute test | NFPA 101, Section 7.9 |
Burned-out exit signs and emergency lights that don't come on during the monthly test are two of the most common things a fire inspector writes up. Both are cheap to fix and easy to forget.
Common Exit Door Violations
Most exit door problems aren't about design. They're about what happens on a busy Tuesday.
- Boxes, carts, or pallets in front of the door or along the path to it.
- Locked or chained exits, often a back door locked to stop theft.
- An extra deadbolt or slide bolt added on top of the panic bar.
- Fire doors wedged open for airflow or deliveries.
- Burned-out exit signs or signs hidden behind displays.
- Emergency lights that don't come on because nobody tested them.
- Doors that stick or drag and take too much force to open.
- Decorations or curtains hiding the door.
What can a violation cost?
For workplaces, OSHA can fine up to $16,550 per serious violation and up to $165,514 per willful or repeated violation, for penalties assessed after January 15, 2026. If a problem isn't fixed by the deadline, OSHA can add up to $16,550 for each extra day.
Local fire marshals can issue their own citations too, and the amounts vary by city. A locked exit can also lead to the building being shut down until it's fixed. See our guide on fire exit violation fines and penalties for more.
How to Check Your Exit Doors
A quick walk once a month catches most problems before an inspector does:
- Every exit opens from the inside with one push, no key needed.
- Nothing is stored in front of the door or along the path to it.
- Panic bars release smoothly and the door doesn't stick.
- Fire doors close and latch on their own, and none are wedged open.
- Every exit sign is lit and easy to see.
- Emergency lights come on during a 30-second test.
- Doors that aren't exits are marked.
Download the exit door checklist
DownloadFire-rated doors also need a yearly inspection by a qualified person under NFPA 80, and the 90-minute emergency lighting test is due once a year.
For fire protection contractors
Exit doors, fire doors, exit signs, and emergency lights add up to a lot of small, recurring checks across every building you service. Each one is a line on the inspection report, and each failed item is a repair you can quote.
ZenFire keeps those checks on schedule. Set up recurring inspections for monthly and yearly tests, let techs fill out NFPA-compliant forms on a phone or tablet, and send a quote for any failed door or light before they leave. Book a ZenFire demo to see it on your own jobs.
Frequently asked questions
What are the requirements for an emergency exit door?
It must open from the inside with one motion and no key, be side-hinged, swing outward if it serves 50 or more people, be at least 32 inches wide and 80 inches high, and stay clear and marked with a lit exit sign.
How are emergency exit doors equipped?
Usually with a panic bar (push bar), a door closer, and an exit sign above. Some also have a local door alarm, a delayed egress lock, or magnetic hold-opens tied to the fire alarm.
Can an emergency exit door be locked?
It can be locked from the outside, but never from the inside while people are in the building. OSHA only allows inside locks in mental health, penal, and correctional facilities.
Do emergency exit doors have to swing outward?
Yes, if the room is designed for 50 or more people or is a high hazard area. Smaller rooms can have doors that swing either way.
Can an exit door have an alarm on it?
Yes, as long as the alarm doesn't stop the door from opening. A delayed egress lock is allowed only under strict conditions, including sprinklers or fire detection throughout the building.
How wide does an emergency exit door have to be?
At least 32 inches clear with the door open, under the IBC. OSHA also requires the path to the exit to be at least 28 inches wide at every point.
How many emergency exits does a building need?
At least two for most spaces. Under the IBC, spaces for 501 to 1,000 people need three, and more than 1,000 people need four.
What's the fine for a blocked fire exit?
OSHA can fine up to $16,550 per serious violation and up to $165,514 if it's willful or repeated, for penalties assessed after January 15, 2026. Local fire departments may add their own fines.