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Every business owner hopes they never need a first aid kit. But when a workplace injury happens, having the right supplies within arm’s reach can make the difference between a minor incident and a serious medical emergency. Whether you run a small retail shop, a busy office, a warehouse, or a construction site, a properly stocked first aid kit is one of the simplest and most important safety investments you can make.
Beyond the human element, many businesses are also required by law to maintain first aid supplies on-site, making this a compliance issue as much as a care issue. Skipping this step is not just a risk to your employees. It can also expose your business to regulatory penalties.
This guide walks you through exactly how to build a first aid kit for your business from scratch. You will learn what supplies are legally required, how to choose the right kit size and location, what to stock based on your specific workplace risks, and how to keep everything current so your kit is ready when it matters most. By the end, you will have a clear, actionable plan to set up a first aid kit business owners can rely on during a real emergency.
Step 1: Understand Your Legal Requirements
Before you buy a single bandage, you need to understand what the law actually requires. This is the foundation everything else is built on, and skipping it can cost you more than you expect.
OSHA Standard 1910.151 (General Industry) requires employers to ensure the ready availability of medical personnel for advice and consultation on matters of employee health, and to maintain adequate first aid supplies on-site. The standard references the ANSI/ISEA Z308.1 benchmark as a guide for what “adequate” looks like in practice.
Requirements vary significantly by industry. General industry, construction, and maritime each fall under different OSHA standards. For construction sites specifically, OSHA 1926.50 requires that a person trained in first aid must be available at the worksite at all times. That is a meaningful distinction from simply having a stocked kit sitting on a shelf.
It does not stop at the federal level. Many states have their own occupational health and safety regulations that go beyond federal OSHA minimums. California, Washington, and several other states maintain their own OSHA-approved plans with additional requirements. Checking with your state’s labor or workplace safety authority is worth the time, especially if you operate in a higher-risk industry.
Here is a practical approach to getting this right:
Review the relevant OSHA standard for your industry: General industry falls under 29 CFR 1910.151, construction under 29 CFR 1926.50, and maritime under separate maritime standards. Each has different thresholds.
Contact your state’s workplace safety authority: If your state operates its own OSHA-approved plan, check their specific requirements. A quick call or email to your state agency can clarify what applies to you.
Consult an occupational health professional if needed: For higher-risk industries like manufacturing, chemical handling, or construction, an occupational health consultant can help you build a compliant program from the ground up.
Document everything: Keep written records of your compliance efforts, including what kit you chose, when it was inspected, and who is trained. If an OSHA inspector visits, documentation is your best defense. Understanding the full scope of first aid kit requirements for workplace settings is a smart starting point before you move forward.
Treat this step as your legal baseline. Everything you do in the steps that follow should meet or exceed what you find here.
Step 2: Assess Your Workplace Hazards
Not every workplace carries the same risks. A graphic design studio and a commercial kitchen are both workplaces, but the injuries that are likely to happen in each are completely different. A proper hazard assessment helps you build a kit that actually fits your environment rather than just checking a box.
Start by walking through your workplace with fresh eyes. Think about where injuries are most likely to happen and what types of injuries those might be. Here are some examples to get you thinking:
Kitchens and food service: Burns, cuts, and lacerations are common. Your kit should be stocked accordingly with burn treatment supplies and a range of wound care options. Knowing how to handle first aid for burns is especially valuable in these environments.
Workshops and manufacturing floors: Eye injuries from flying debris, crush injuries, and chemical exposure are more likely. Eye wash solutions and more extensive wound care supplies belong in these kits.
Construction sites: High-trauma injuries including deep lacerations, fractures, and head injuries are a real possibility. Bleeding control supplies become especially important here.
Office environments: Lower overall risk, but slips, falls, and minor cuts still happen. A standard Class A kit is typically sufficient for most office settings.
Beyond the type of injuries, consider these factors as well:
Number of employees and shift patterns: A business running 24-hour shifts with rotating staff needs more supplies and more trained responders than a nine-to-five office with ten employees.
Remote or isolated workers: If you have employees working alone or in locations far from coworkers, they may need individual portable kits and additional training to self-manage until help arrives.
Proximity to emergency medical services: The farther your workplace is from a hospital or emergency responders, the more self-sufficient your kit needs to be. A rural job site where EMS response could take twenty minutes or more requires a more comprehensive setup than an urban office two blocks from a hospital.
Once you have completed your hazard assessment, use it as a shopping checklist for the next step. It will tell you exactly what to prioritize beyond the standard minimums.
Step 3: Choose the Right Kit Size and Format
Once you know your legal requirements and your specific hazards, the next decision is what type of kit to get and how big it should be. Getting this wrong in either direction creates problems. A kit that is too small runs out of supplies quickly. A kit that is too large and disorganized slows down emergency response when speed matters most.
First aid kits are generally sized by the number of employees they are designed to serve. As a general guideline, small kits cover roughly 1 to 25 people, medium kits cover 25 to 50, and large kits are appropriate for 50 to 100 or more employees. If you are unsure, err on the side of slightly larger. Running out of gloves or bandages during an emergency is not a situation you want to find yourself in.
Beyond size, think about format. The right format depends on how your workplace is set up:
Wall-mounted first aid cabinets: These are ideal for fixed workplaces with multiple employees. They keep supplies organized, visible, and easy to access. A clearly labeled wall-mounted first aid cabinet mounted near a workstation or break room is often the most practical choice for retail stores, restaurants, offices, and light manufacturing environments.
Portable first aid kits: These work well for field teams, delivery drivers, construction crews, and anyone working across multiple locations or remote job sites. Compact, durable cases that can be thrown in a vehicle or carried to a work area give mobile workers access to supplies wherever they are.
Multi-location setups: Larger facilities often need kits in several areas. A good rule of thumb is one kit per floor, one per vehicle, and one per department or high-risk zone. Think about where injuries are most likely to happen and make sure a kit is close to each of those areas.
When selecting a kit, look for products that meet the ANSI/ISEA Z308.1 standard. This is the most widely recognized benchmark for workplace first aid kits in the United States. Kits labeled as Class A meet the minimum requirements for common workplace injuries, while Class B kits include a broader range of supplies for more complex or higher-risk environments. Choosing a kit that already meets this standard gives you a solid, compliant foundation to build from.
Step 4: Stock Your Kit with the Right Supplies
Now comes the part most people think of first: what actually goes inside. The ANSI/ISEA Z308.1 standard gives you a clear minimum list to start with, and your hazard assessment from Step 2 tells you what to add on top of that.
The ANSI Class A minimum includes:
1. Adhesive bandages in assorted sizes
2. Sterile gauze pads
3. Adhesive tape
4. Antiseptic treatments (wipes or towelettes)
5. Burn treatment (gel or dressing)
6. Eye wash solution
7. Disposable gloves
8. CPR breathing barrier or face shield
9. Scissors or trauma shears
10. A first aid guide or instruction booklet
Class B kits expand on this list with additional quantities and items suited for higher-risk environments, including elastic bandages, more extensive wound closure options, and splinting materials.
Beyond the standard minimums, your hazard assessment should guide what you add:
Tourniquets and wound packing gauze: If your employees work in environments where deep lacerations or high-trauma injuries are possible, such as construction, manufacturing, or food processing, bleeding control supplies are a worthwhile addition. Programs like Stop the Bleed have raised awareness of how quickly severe bleeding can become life-threatening and how a tourniquet in the right hands can change the outcome.
Eye wash stations: For workplaces with chemical exposure risks, a portable or wall-mounted eye wash station goes beyond what a small bottle of eye wash can offer. Check whether OSHA or your state requires a dedicated eye wash station for your specific environment.
Burn gel and non-stick dressings: Kitchens, food service operations, and any environment with hot equipment or open flame should stock these in greater quantities than the standard minimum.
AED (Automated External Defibrillator): This is worth mentioning here because cardiac events are a leading cause of workplace death. If your workplace has more than a handful of employees, pairing your first aid kit with an AED significantly improves your emergency response capability. OSHA and the American Heart Association both support broader AED deployment in workplace settings.
One important note on organization: do not overstock to the point where the kit becomes cluttered and hard to navigate. A disorganized kit slows down emergency response. Label everything clearly, keep items grouped by type, and make sure anyone, trained or not, could find what they need quickly under stress. Reviewing advanced first aid training resources can also help you identify supply gaps specific to your industry.
Step 5: Place Your Kit Where It Will Actually Be Used
A first aid kit locked in a supply closet at the back of the building is not a first aid kit. It is a false sense of security. Placement matters as much as what is inside.
The goal is simple: any employee should be able to reach a first aid kit within about one minute. In larger facilities, that typically means placing kits in multiple locations rather than relying on a single central kit.
Here are the placement principles that work in practice:
Mount kits in visible, high-traffic areas: Near exits, in break rooms, at workstations where injuries are most likely, and in any area where hazardous tasks are performed. Visibility matters. If someone has to search for the kit during an emergency, precious seconds are lost.
Never lock first aid kits behind barriers: Kits should not require a key, a code, or a supervisor’s approval to access. During an emergency, barriers become dangerous delays.
Post clear signage: A bright, standard first aid sign above or beside the kit helps new employees, visitors, and anyone unfamiliar with the space find it immediately. This is especially important in larger facilities or workplaces with high turnover.
Multi-story buildings need at least one kit per floor: Do not assume employees will take the stairs or elevator to retrieve supplies. Keep kits on every level where people work. Browsing available first aid kits by size and format can help you plan coverage across multiple floors or zones.
During onboarding for new employees and during regular safety drills, walk your team through exactly where each kit is located. Knowing where to go before an emergency happens is what makes that knowledge useful when it counts.
Step 6: Train Your Team to Use the Kit
Here is the reality: a first aid kit without a trained person nearby is significantly less effective. Supplies alone do not save lives. People who know how to use those supplies do.
At a minimum, every workplace should have at least one designated trained first aider per shift. In higher-risk environments, that number should be higher. For construction sites, OSHA specifically requires that a trained first aider be present at the worksite at all times, not just during regular business hours.
So what does “trained” actually mean? Here is a practical breakdown:
First Aid and CPR certification: This is the baseline. A certified first aider knows how to assess an injured person, control bleeding, treat burns, manage shock, perform CPR, and use an AED. These are the skills that bridge the gap between an injury happening and emergency services arriving. Hands-on, in-person training is far more effective than reading a manual or watching a video. When the moment comes, muscle memory built in a real training environment is what kicks in. Getting a first aid certification is the most reliable way to ensure your team is prepared.
AED training: If your workplace has an AED, every designated first aider should be trained to use it. AED training is typically included in CPR certification courses and adds very little time to the overall training.
Refresher training every two years: Skills fade. The American Heart Association recommends that CPR and first aid skills be refreshed regularly to maintain competency. A two-year renewal cycle is the standard for most certifications, and it is a reasonable schedule for keeping your team sharp.
Documentation: Keep a record of who is trained, what course they completed, and when their certification expires. This documentation supports your OSHA compliance posture and helps you plan ahead for renewals before certifications lapse. Employers should also review OSHA first aid training requirements to ensure their program meets all applicable standards.
Training also builds confidence. An employee who has practiced responding to an emergency in a controlled setting is far more likely to act quickly and calmly when a real emergency happens than someone who has never done it before.
Step 7: Maintain and Inspect Your Kit on a Regular Schedule
A first aid kit is not a one-time purchase. It is an ongoing responsibility. Supplies get used, items expire, and kits can quietly fall into disrepair if no one is actively managing them.
The most important thing you can do here is assign ownership. When kit maintenance is “everyone’s responsibility,” it tends to become no one’s responsibility. Name a specific person, give them a checklist, and hold them accountable.
Here is a maintenance schedule that works for most businesses:
After every use: Replace any supplies that were used immediately, not at the next scheduled check. A kit that is partially depleted is not a fully functional kit.
Monthly checks: Review the kit for used, expired, or damaged supplies. Check that the kit is in its designated location and that the container itself is clean and undamaged. A simple checklist posted inside the kit lid makes this faster and more consistent.
Annual review: Once a year, or any time your workplace changes significantly, review the entire kit contents against your current hazard assessment. If you have hired more employees, introduced new equipment, or changed your operations, your kit may need to be updated to reflect those changes. Scheduling group first aid training during your annual review is a practical way to refresh both your supplies and your team’s skills at the same time.
Keep a maintenance log: Record inspection dates, what was replaced, and who performed the check. Store the log inside the kit or on a nearby clipboard. This log also supports your compliance documentation in case of an OSHA inspection.
Setting a recurring calendar reminder for monthly checks takes about thirty seconds to set up and ensures the task does not slip through the cracks during busy periods. Small habits like this are what keep your safety program functional over the long term.
Your First Aid Kit Business Checklist: Putting It All Together
Building a first aid kit for your business does not have to be complicated. When you follow these steps in order, you end up with a kit that is legally compliant, appropriately stocked for your specific workplace, easy to find, and backed by trained employees who know how to use it.
Here is a quick checklist to confirm you have covered everything:
1. Confirm your legal requirements under the relevant OSHA standard and any applicable state regulations
2. Complete a workplace hazard assessment to identify the most likely injury types in your environment
3. Choose the right kit size and format based on your employee count and workplace layout
4. Stock supplies that meet ANSI/ISEA Z308.1 standards and add items based on your specific risks
5. Place kits in accessible, visible locations with clear signage and no access barriers
6. Train at least one employee per shift in first aid and CPR, and keep certifications current
7. Schedule regular maintenance inspections and assign a specific person to own the process
A well-prepared workplace is not just a legal requirement. It is a commitment to the people who show up every day.
If you are ready to take the next step, Respond and Rescue can help you source quality first aid supplies and get your team certified with hands-on CPR and First Aid training. When a real emergency hits, there is no pause button and no second chances. Get the training that prepares you to act fast and with confidence. Find a local class or schedule your on-site training now and leave ready to save a life.
