First Aid Kit Requirements For Businesses: 2026 Guide

Updated for September 2026 — running a business comes with a long list of responsibilities, and workplace safety sits near the top of that list. One area that many business owners overlook until it is too late is first aid preparedness. Whether you manage a small office, a busy warehouse, a restaurant, or a retail store, having the right first aid supplies on hand is not just a best practice. In many cases, it is a legal requirement.

OSHA mandates that employers provide adequate first aid supplies based on the nature of their work and the proximity to emergency medical services. Yet the specifics of what qualifies as "adequate" can vary significantly depending on your industry, workforce size, and location. Getting this wrong can mean fines, liability exposure, and most critically, harm to your employees during an emergency — consequences that are entirely avoidable with the right preparation.

This guide breaks down the core first aid kit requirements for businesses, explains how to assess your specific needs, and offers practical strategies to build a compliant, effective workplace safety program. You will also learn how first aid kits fit into a broader emergency response plan that includes AEDs, CPR training, and BLS certification for key staff members.

Whether you are setting up your first workplace kit or auditing an existing one, these seven strategies will help you meet your legal obligations and protect the people who show up to work every day.

1. Understand OSHA's First Aid Kit Standards Before You Buy Anything

The Challenge It Solves

Many business owners purchase a generic first aid kit off a retail shelf and assume they are covered. The problem is that "covered" means something specific under federal law, and a random assortment of bandages and antiseptic wipes may not meet the standard. Before you spend a dollar on supplies, you need to understand the regulatory framework that defines what your business actually requires.

The Strategy Explained

The primary federal regulation governing workplace first aid is OSHA 29 CFR 1910.151, which applies to general industry. This standard requires employers to provide "adequate first aid supplies" that are readily available. For construction environments, OSHA 29 CFR 1926.50 applies and includes additional requirements, such as a first aid kit for every 25 workers on certain job sites.

The most widely referenced standard for defining what "adequate" actually looks like is ANSI/ISEA Z308.1, which classifies workplace first aid kits into two categories. Class A kits are designed for common workplace injuries in lower-hazard environments. Class B kits include a broader range of supplies intended for complex or high-risk environments where injuries may be more severe or varied. OSHA compliance officers regularly reference this standard when evaluating workplaces, making it the practical benchmark for most businesses.

It is worth noting that ANSI standards are updated periodically. Always verify that you are referencing the current edition of ANSI/ISEA Z308.1 when building or auditing your kit.

Implementation Steps

1. Download or access the current edition of ANSI/ISEA Z308.1 and review the Class A and Class B kit requirements in full.

2. Identify which OSHA standard applies to your industry, whether general industry (29 CFR 1910.151) or construction (29 CFR 1926.50), and note any industry-specific additions.

3. Check your state's labor or health department resources for any state-level requirements that go beyond federal minimums, particularly around AEDs and trained personnel.

Pro Tips

Do not rely solely on the label on a kit box. Just because a product is marketed as a "workplace first aid kit" does not mean it meets ANSI or OSHA standards. Cross-reference the contents against the ANSI/ISEA Z308.1 checklist before purchasing. When in doubt, consult with a workplace safety professional who can review your specific situation.

2. Conduct a Workplace Hazard Assessment to Determine Your Kit Needs

The Challenge It Solves

Not every workplace faces the same risks. A law office and a metal fabrication shop both need first aid kits, but the contents, quantity, and placement will look very different. Without a formal hazard assessment, you are essentially guessing at what your employees actually need in an emergency, and guessing is not a strategy.

The Strategy Explained

A workplace hazard assessment is a structured review of your facility and work processes designed to identify the types of injuries most likely to occur. OSHA encourages this kind of proactive evaluation as the foundation of any safety program. The results of your assessment should directly inform whether you need Class A or Class B kits, how many kits your facility requires, and what supplemental supplies might be appropriate beyond the ANSI minimums.

Think about the tasks your employees perform every day. Do they work with sharp tools or heavy machinery? Are they exposed to chemicals, extreme temperatures, or electrical hazards? Do they work at heights or in confined spaces? Each of these scenarios changes the injury profile of your workplace and therefore changes what your first aid kit should contain.

Your workforce size matters too. A facility with a large number of employees spread across multiple floors or zones will need more kits and more strategic placement than a small team working in a single room.

Implementation Steps

1. Walk through your entire facility with a safety checklist and document every area where employees work, including storage areas, loading docks, break rooms, and parking lots.

2. Categorize the hazards present in each zone: mechanical, chemical, thermal, biological, or ergonomic. Note the injury types most associated with each hazard.

3. Use your hazard inventory to map out the type and number of kits needed, then compare against ANSI Class A and Class B requirements to determine the appropriate classification for each location.

Pro Tips

Involve your employees in the assessment process. The people doing the work every day often have the clearest picture of what hazards exist and where near-misses have occurred. Their input can surface risks that a walkthrough alone might miss, and their participation builds buy-in for your overall safety program.

3. Stock the Core Supplies Every Business Kit Must Include

The Challenge It Solves

Knowing which regulatory category applies to your business is only half the battle. The other half is making sure the physical contents of your kit actually match what those standards require. Many kits arrive with items missing, quantities that fall short, or supplies that have already expired. A kit that looks complete on the outside can still leave you non-compliant and unprepared.

The Strategy Explained

ANSI/ISEA Z308.1 specifies minimum item types and quantities for both Class A and Class B kits. Class A kits are built around the most common workplace injuries and include items such as adhesive bandages in various sizes, sterile gauze pads, adhesive tape, antiseptic wipes or solution, antibiotic ointment, burn treatment gel or dressings, eye wash solution, disposable gloves with non-latex options, a CPR breathing barrier, scissors, tweezers, and a first aid guide.

Class B kits include everything in Class A plus additional supplies for more complex injuries. These additions typically include a tourniquet, a splint, trauma dressings, additional wound closure strips, and elastic bandages. For higher-hazard environments, Class B is the appropriate baseline, and many businesses in construction, manufacturing, or warehousing will need this