AEDs are not required in most U.S. workplaces under federal law. OSHA, the agency responsible for workplace safety standards, does not specifically mandate automated external defibrillators. However, a patchwork of state laws, local ordinances, and industry-specific regulations means some businesses are required to have them, and many safety organizations strongly recommend them regardless of legal obligation.
What Federal Law Actually Says
OSHA’s standards address medical services and first aid under 29 CFR 1910.151, but that regulation covers general first-aid readiness, not AEDs specifically. The same is true for construction (1926.50) and maritime (1915.87) standards. In practical terms, no federal workplace safety rule says you must have an AED on site. OSHA treats AEDs as part of a broader first-aid landscape rather than singling them out as mandatory equipment.
That said, federal law does address AEDs in another important way: liability protection. Under 42 U.S.C. § 238q, any person who uses an AED on someone experiencing a perceived medical emergency is generally immune from civil liability for harm resulting from that use. The same protection extends to the person or organization that purchased the device, as long as they maintained and tested it properly, notified local emergency responders about its location, and provided reasonable training to employees expected to use it.
State and Local Laws Vary Widely
Where things get complicated is at the state level. Many states have passed laws requiring AEDs in specific types of buildings or businesses. Schools, health clubs, and nursing homes are among the most common targets. Some states require AEDs in any facility that holds a certain number of occupants or serves as a public gathering place. Others limit mandates to government buildings, airports, or sports arenas.
Texas, for example, requires AEDs in schools and nursing homes but does not extend that mandate to dental offices, even though dental procedures involving sedation carry cardiac risk. The state only requires AEDs in dental settings where patients undergo sedation or anesthesia. This kind of gap is common: requirements tend to be narrow and industry-specific rather than sweeping mandates that cover all private businesses.
If you’re trying to figure out whether your specific workplace needs one, start with your state’s health department or emergency medical services division. Local fire departments sometimes maintain registries of AED locations and can point you to relevant ordinances.
Why Many Employers Install Them Anyway
The survival numbers make a strong case even without a legal mandate. A large study published in the Journal of the American College of Cardiology tracked over 13,000 cardiac arrests that occurred before emergency medical services arrived. Among all cases treated by EMS, overall survival was just 7%. When bystanders performed CPR but no AED was available, survival rose slightly to 9%. But when an AED was applied before EMS arrived, 24% survived. Among those who actually received a shock from the AED, 38% survived.
The median EMS response time in that study was 5.3 minutes. That window matters enormously because every minute without defibrillation during sudden cardiac arrest reduces survival by roughly 7 to 10 percent. An AED sitting in the hallway can cut that gap to seconds instead of minutes. The American Heart Association recommends designing AED programs so that a device can reach any person in the building within three minutes of collapse.
What an AED Program Costs
A single AED unit typically costs around $2,000. Annual training runs about $270 per device location, and each time a device is actually used on a patient, restocking supplies costs roughly $150. Those are manageable numbers for most mid-size businesses, though for very small employers the upfront cost can feel significant.
The ongoing expense is really about maintenance. AED batteries last around four to five years, and electrode pads have their own expiration dates printed on the packaging. Both need regular checking. King County’s emergency medical services program recommends monthly inspections, documenting each check to confirm the device is charged, pads are sealed and undamaged, and nothing has expired. Neglecting maintenance doesn’t just risk device failure. It can also void the federal Good Samaritan liability protections, which require that the device owner properly maintained and tested it.
Setting Up a Workplace AED Program
Buying a device and mounting it on the wall is only part of the equation. The American Heart Association outlines several components of an effective program: assigning a team to manage policies, training enough employees in CPR and AED use so that someone is always available during operating hours, and designating a person or team responsible for inspections, supply restocking, software updates, and recall monitoring.
Placement matters as much as purchase. Use the three-minute guideline to figure out how many devices you need. In a single-floor office, one centrally located AED may be sufficient. In a multi-story building or a sprawling warehouse, you may need several. The AED should be in a visible, unlocked location along a main path of travel.
If you mount the AED in a wall cabinet, ADA accessibility standards apply. The cabinet handle should sit between 15 and 48 inches above the floor for an unobstructed forward reach. If the cabinet is in a hallway or circulation path, it cannot protrude more than 4 inches from the wall unless the bottom edge is 27 inches or lower. These measurements ensure that people using wheelchairs or with limited reach can access the device in an emergency.
Liability Protection Has Conditions
The federal Good Samaritan protection for AED use is broad, but it has limits worth understanding. Immunity does not apply if the harm was caused by willful misconduct, gross negligence, or reckless behavior. It also does not cover licensed health professionals using an AED within their professional scope, or hospitals and clinics where providing medical care is the primary purpose. In those settings, standard malpractice frameworks apply instead.
For a typical office, retail store, or warehouse, the protections are straightforward: keep the device maintained, register its location with local emergency services, train the employees who are reasonably expected to use it, and the law shields both the user and the organization from civil liability. Most states have their own Good Samaritan statutes that layer additional protections on top of the federal law, though the specifics vary.
The practical takeaway for employers is that having an AED and maintaining it properly creates far less legal exposure than not having one at all, particularly if a cardiac arrest occurs on site and no device was available. Courts in negligence cases often look at what a reasonable employer would have done, and AEDs are increasingly considered a baseline safety measure in workplaces of any size.