OSHA 29 CFR 1910.157

Q: Can my employer choose not to have fire extinguishers?

Yes. OSHA 1910.157 allows employers to skip fire extinguishers entirely if they establish a written total evacuation plan under 1910.38 and a fire prevention plan under 1910.39. In that case, everyone evacuates and nobody fights the fire.

Q: Do all employees need hands-on extinguisher training?

No. All employees need education on general fire extinguisher principles. Only employees who are designated to actually use extinguishers need hands-on training with the equipment. The standard draws a clear line between education and training.

Q: Can fire extinguisher inspections be done quarterly instead of monthly?

No. OSHA addressed this directly in a 2006 interpretation letter and confirmed that monthly is the minimum frequency. You can inspect more often, but not less.

Q: What fire classes does 1910.157 not cover?

Class K (cooking oils and fats in commercial kitchens). For Class K extinguisher requirements, you need to look at NFPA 10 and your local fire code. OSHA 1910.157 covers Classes A, B, C, and D only.

Q: What is the PASS technique?

PASS stands for Pull the pin, Aim at the base of the fire, Squeeze the handle, and Sweep side to side. It is the standard method taught for operating a portable fire extinguisher and must be included in hands-on training for designated employees under 1910.157(g)(3).

Q: Does 1910.157 apply to construction sites?

No. 1910.157 is a general industry standard. Construction sites fall under 29 CFR 1926.150 for fire protection. The requirements are similar but not identical.

Portable Fire Extinguishers: Employer Requirements and Compliance

Last updated: March 26, 2026

Overview

29 CFR 1910.157 is the federal OSHA standard for portable fire extinguishers in the workplace. It sits in Subpart L (Fire Protection) and applies to all general industry employers.

The standard does not automatically require every employer to provide fire extinguishers. You can provide them and train people to use them. Or you can write a total evacuation plan and skip extinguishers entirely. What you cannot do is leave the decision undefined.

The Four Employer Options

1910.157 gives employers four paths depending on how they want to handle fire response.

Option	Approach	What's Required	1910.157 Obligations
1	Total evacuation, no extinguishers	Written plans per 1910.38 + 1910.39	Fully exempt
2	Designated employees only fight fires	Emergency action plan per 1910.38	Exempt from distribution (d) only
3	Total evacuation, but extinguishers present (insurance/code)	Written emergency action plan per 1910.38	Maintenance and testing only
4	All employees may fight fires	No emergency action plan required	Full 1910.157 compliance

The decision to use extinguishers cannot be left up to individual employees. It must be spelled out in a written plan. If OSHA shows up and you have extinguishers on the wall but no written policy about who uses them, you have a problem.

Selection and Distribution

Extinguishers must be selected for the fire types present and placed within specific travel distances. Distances are measured along the walking path, not as a straight line.

Fire Class	Hazard Type	Max Travel Distance	Notes
A	Ordinary combustibles	75 ft	Most common workplace requirement
B (10B+)	Flammable liquids	50 ft	Larger-rated extinguishers
B (5B)	Flammable liquids	30 ft	Smaller units need closer spacing
C	Energized electrical	Per underlying A or B	Select based on what's burning
D	Combustible metals	75 ft	Specialized agents required

Class K (cooking oils and fats): 1910.157 does not cover Class K fires. Wet chemical extinguishers for commercial kitchens fall under NFPA 10 and local fire codes. If your facility has a commercial kitchen, you need to meet those requirements separately.

Inspection and Maintenance

Monthly inspections are the employer's job. Everything else requires a qualified service technician.

Frequency	Activity	Who	Records
Monthly	Visual check: gauge, seal, damage, access	Any trained employee	Recommended (tag or log)
Annual	Full maintenance per manufacturer specs	Certified technician	Retain 1 year
6-year	Empty and internally examine stored-pressure dry chemical units	Certified technician	Until next service
Hydrostatic	Pressure test. 5 yr for CO2/halon, 12 yr for most others.	Testing facility	Life of unit

Warning: OSHA rejected quarterly inspections in a 2006 interpretation letter. Some employers try to reduce the frequency to save time. Monthly is the minimum. Missing even one month creates a citable violation.

Training Requirements

1910.157 draws a clear line between education and training. They apply to different groups.

Education: all employees

Paragraphs (g)(1) and (g)(2) require education for every employee. This covers general principles of extinguisher use and the hazards of fighting fires in the early stages. No hands-on practice required.

Can be delivered through videos, flyers, or toolbox talks
Required upon initial assignment
Must be repeated at least annually

Training: designated employees only

Paragraphs (g)(3) and (g)(4) require hands-on training for employees designated to use extinguishers. Higher bar. They must physically practice.

Hands-on practice with actual extinguisher equipment
Must include the PASS technique (Pull, Aim, Squeeze, Sweep)
Required upon initial assignment
Must be repeated at least annually

If you chose Option 1 (total evacuation, no extinguishers), you are exempt from both education and training under 1910.157. But you still need to train employees on your emergency action plan under 1910.38.

Enforcement

Fire extinguisher violations are among the most commonly cited OSHA standards.

Classification	Max Penalty (2024)	Common Violations
Serious	Up to $16,550	Missing inspections, no records, blocked extinguishers
Other-than-serious	Up to $16,550	Expired tags, minor mounting issues
Willful / Repeated	Up to $165,514	Known deficiencies left uncorrected, no training after prior citation

Penalty amounts are adjusted annually for inflation. Actual penalties depend on employer size, good faith, violation history, and gravity of the hazard.

1910.157 vs NFPA 10

1910.157 is the employer requirement (federal law). NFPA 10 is the technical standard (how to select, install, and maintain). Many local fire codes adopt NFPA 10.

Topic	OSHA 1910.157	NFPA 10
Authority	Federal law (OSHA)	Consensus standard, adopted by local fire codes
Evacuation alternative	Yes, employers can opt out entirely	No
Class K coverage	Not covered	Covered (wet chemical for commercial kitchens)
Mounting height	"Readily accessible" (no height spec)	Max 5 ft (over 40 lbs) or 3.5 ft above floor
Monthly inspection	Required	Required