If you own or manage a restaurant, there's a good chance you've assumed OSHA's Hazard Communication Standard doesn't really apply to you. Restaurants serve food. Food is exempt from HazCom. Therefore, HazCom is a manufacturing-and-construction thing — not a kitchen thing. Right?
That reasoning is a trap, and it's how restaurants end up cited.
The food exemption in OSHA's Hazard Communication Standard covers exactly one category: the food and beverages you sell to customers, and food intended for personal consumption by employees. It does not cover the degreaser you use to clean the hood. It does not cover the sanitizer in every bus tub. It does not cover the dish-machine chemicals, the fryer boil-out, the drain cleaner, the pest control products, or the CO2 cylinders feeding your soda gun. Every one of those is a hazardous chemical, and every one of them puts your restaurant squarely inside the HazCom standard.
A restaurant kitchen is one of the most chemical-dense small workplaces in the country. The good news is that restaurant HazCom compliance isn't complicated — the chemicals are well-understood, the SDS library is small, and the required practices map cleanly onto routines staff already follow. The bad news is that nearly every full-service restaurant gets at least some piece of this wrong, and the consequences of getting CO2 specifically wrong have killed people.
Here's the practical guide.
Why People Think HazCom Doesn't Apply to Restaurants (And Why They're Wrong)
The exemption that confuses everyone is at 29 CFR 1910.1200(b)(6)(vi). It says HazCom doesn't apply to "food or alcoholic beverages which are sold, used, or prepared in a retail establishment (such as a grocery store, restaurant, or drinking place), and foods intended for personal consumption by employees while in the workplace."
Read carefully, that exemption covers the burgers, the bottles of wine, the family meal you serve the staff before dinner service. It does not cover anything else. OSHA reaffirmed this in a 1990 letter of interpretation specifically addressing food and food additives in workplaces: the exemption is about the food and drink products themselves, not about workplace chemicals used to clean, sanitize, or maintain the facility.
There's a second exemption restaurant owners sometimes try to invoke: the "consumer product" exemption at 1910.1200(b)(6)(ix), which carves out products used at consumer frequency and duration. OSHA's controlling guidance on this one came from a 1991 letter of interpretation about Safeway grocery stores. The agency's position, in plain language: if it's an employee's job to clean sinks all day with a product, or use a sanitizer continuously throughout a shift, that employee is "not using" the product in the same way a consumer at home would use it. The exemption doesn't apply, and the employee is entitled to HazCom training, SDS access, and labeled containers.
The practical upshot: every restaurant with a closing crew that wipes tables with sanitizer, mops floors with degreaser, runs a dish machine with caustic detergent, or scrubs a fryer with boil-out powder is a HazCom-covered employer. There are no de-minimis exclusions for small restaurants, no exceptions for franchise units, and no out for "we only use consumer-brand cleaning products."
Health department inspections and OSHA inspections check different things. Your health inspector verifies sanitizer concentration and food contact surface chemistry under the Food Code. OSHA verifies SDS access, secondary container labels, written HazCom programs, and employee training. Passing a health inspection establishes nothing about your OSHA compliance.
The Chemicals You Actually Have in Your Kitchen
Most restaurant operators underestimate their chemical inventory by half. When you walk through every closet, prep station, dish pit, and storage area with HazCom eyes, the list typically lands somewhere between 25 and 60 distinct products. Here's the typical roster.
Cleaning chemicals account for the largest chunk. Heavy-duty degreasers — almost always alkaline, often built on sodium hydroxide, potassium hydroxide, or 2-butoxyethanol — are corrosive enough to cause serious skin and eye damage. Oven and grill cleaners are even more aggressive. Floor cleaners and strippers add their own hazards. Dish detergents (the industrial machine kind, not hand soap) are typically chlorinated alkaline products that can burn skin on contact.
Sanitizers and disinfectants are everywhere in a kitchen and frequently misunderstood. Quaternary ammonium ("quats") in bucket sanitizer at 200 to 400 ppm is the most common form and is a known skin and respiratory sensitizer with continuous occupational use. Chlorine bleach (sodium hypochlorite) is the second most common; mixing it with quats, ammonia, or acid produces toxic gases. Iodine and iodophor sanitizers turn up in dish areas. Peracetic acid is gaining ground in higher-volume operations and has no OSHA permissible exposure limit, though ACGIH and Cal/OSHA have proposed short-term exposure limits.
Fryer and oven products include boil-out compounds (sodium hydroxide or sodium metasilicate based — strongly alkaline and corrosive), filter aids, and oil stabilizers. The boil-out chemicals in particular are responsible for a steady stream of chemical burn injuries when staff handle them without proper PPE.
Dish machine chemicals typically dispense automatically from sealed cartridges, which gives operators a false sense that they're not really "handled" — but they are hazardous chemicals on premises and need SDSs in the library. The detergent, rinse aid, and sanitizer products in a high-temp machine, or the detergent and chlorine in a low-temp machine, all qualify.
Drain cleaners and grease trap chemicals are some of the most dangerous products in a restaurant. Caustic drain openers and any sulfuric-acid-based product are capable of causing immediate severe burns and toxic fume releases if mixed with the wrong thing.
Pest control products — sprays, baits, gels, dusts — are regulated by EPA under FIFRA, which provides a narrow exemption from HazCom labeling requirements for the products themselves. But employees who apply these products still need training, and the restaurant still needs SDSs available. If a licensed exterminator is the one applying, that contractor's employees are covered by the contractor's program, but you're still in a multi-employer worksite under HazCom.
Compressed gases are the category most restaurants underestimate. CO2 cylinders or bulk tanks for soda and beer carbonation are the highest single hazard on this list — more on that below. Propane for outdoor heaters and certain kitchen equipment, plus refrigerant in walk-ins (handled by HVAC contractors but present in your facility), round out the gas category.
Specialty items add up faster than you'd expect: coffee descaler (citric or phosphoric acid), espresso machine cleaner (alkaline), ice machine cleaner, silver polish where applicable, and the various sprays and treatments in the back of every prep station.
Build your chemical inventory by walking the entire facility once, not by trying to remember what you ordered. Every container with a GHS pictogram on the label goes on the list. Every aerosol can, every spray bottle, every dispenser, every cylinder. You'll find products you forgot you had. That's the point.
The CO2 Problem That's Killed People
If you take only one thing from this post, take this section seriously.
CO2 is colorless, odorless, denser than air, and a simple asphyxiant. OSHA's permissible exposure limit is 5,000 ppm as an 8-hour time-weighted average. Concentrations above 5% (50,000 ppm) can cause unconsciousness within minutes and death shortly after. Because CO2 is heavier than air, it pools in basements, walk-in coolers, and other below-grade or confined spaces — exactly where restaurants typically locate their CO2 storage.
This isn't a theoretical hazard. There's a documented pattern of restaurant CO2 fatalities and near-misses, and reading through them is a useful corrective for any operator who's been treating soda-system CO2 as routine equipment.
In September 2011, an 80-year-old customer died in the restroom of a McDonald's in Pooler, Georgia after a bleed line on the beverage carbonation tank disconnected inside a wall cavity. Nine other people, including three firefighters who responded, were hospitalized. The Pooler, Georgia police chief at the time told CNN that the death was caused by "a lethal dose of carbon dioxide." A few months earlier, in June 2011, a pregnant 24-year-old employee at a McDonald's in Phoenix, Arizona collapsed exiting the basement when a soda-machine CO2 leak displaced oxygen in the space down to 17.5 percent. CO2 monitors were on site but not functional at the time. Two firefighters were injured.
In June 2018, a 48-year-old contractor named Todd Keeling died inside a beer cooler at the Atlanta Braves' SunTrust Park while installing beer-tap equipment. An autopsy attributed the death to "asphyxia due to carbon dioxide exposure." Investigators also found that the cooler door handle had malfunctioned, which may have prevented escape. OSHA issued a serious citation against the stadium's concessionaire.
The pattern is consistent: a CO2 leak in a confined or below-grade space, no functional monitoring, an employee or customer who enters without realizing the atmosphere is depleted, and a fatality that happens fast enough to leave no time for rescue.
For HazCom purposes, compressed CO2 is a hazardous chemical because of its physical hazards — it's a compressed gas and a simple asphyxiant. That means you need an SDS in your library, the cylinders need to be labeled (typically the manufacturer label suffices on the cylinder itself), and your training must specifically cover asphyxiation hazard, recognition signs (headache, dizziness, rapid breathing, confusion), and the rule that employees do not enter a confined or below-grade space to investigate beverage-system alarms or unusual odors — they evacuate the area and call for help.
If you have CO2 storage in a basement, walk-in cooler, or any below-grade or poorly ventilated space, install a CO2 monitor with an audible alarm — and verify regularly that it's powered and functional. Many state and local fire codes now require this. The cost of a monitor is a fraction of the cost of one incident, and a non-functional monitor is what failed in the Phoenix near-miss.
Secondary Container Labels in Kitchens
The single highest-frequency HazCom citation in restaurants is unlabeled secondary containers — the spray bottles staged at every station, the sanitizer buckets sitting on prep tables, the refilled cleaner bottles in mop closets. We covered the full mechanics in our secondary container labeling guide, but the restaurant-specific version is worth restating.
OSHA allows one exemption to the labeling rule. To qualify, all three of these conditions must be true at the same time:
- The chemical was transferred from a properly labeled container by the employee who's now using it.
- The chemical is used entirely within that same employee's work shift.
- The container remains in that employee's continuous control the whole time.
In a restaurant kitchen, this exemption almost never applies. The sanitizer bucket at the prep station is shared with the next shift. The degreaser spray bottle in the mop closet is for everyone. The cleaner you mixed at the start of close is going to sit on a shelf until tomorrow's opening crew picks it up. The moment the bottle leaves your hands, the exemption is gone.
What needs to be on the label is minimal: the product identifier (matching the SDS) plus hazard information — words, pictures, or symbols that communicate the hazard. A printed label with the product name and the appropriate GHS pictograms is the gold standard. A clear sticker with the product name and "Caustic — wear gloves and eye protection" is also compliant. What's not compliant is tape with the chemical name written in marker that's faded past legibility, or an unlabeled bottle "everyone knows" contains sanitizer.
A practical setup that holds up under inspection: a labeling station in the back of house with pre-printed labels for your most common chemicals — the sanitizer at 200 ppm, the degreaser, the floor cleaner, the boil-out. Train every shift lead that any refilled or transferred container gets a label before it leaves the labeling station. Make it the path of least resistance, and the violation goes away.
Training in the Language Workers Actually Speak
OSHA has been explicit, going back to a 1988 letter of interpretation and reinforced in a 2010 policy memorandum: if employees who need HazCom training don't comprehend verbal English, training has to be delivered in a language they do comprehend. SDSs themselves can stay in English, but the training and the labels-in-context have to be in a language each employee actually understands.
In restaurant kitchens, this is rarely just English. Spanish is the most common second language, but operators in many markets have multilingual crews. Documented training records need to show what language was used for which employee.
There's a structural challenge here that doesn't apply to most other small businesses: restaurant turnover. Industry analyses consistently put annual restaurant turnover rates at 75 to 80 percent or higher, and OSHA's training requirement under 1910.1200(h)(1) attaches to the time of initial assignment — meaning every new hire needs documented HazCom training before they handle hazardous chemicals. That includes the closing-shift line cook who's been on the payroll for four hours when she picks up the degreaser bottle for the first time.
For a 30-seat operation with five employees and stable staffing, this is easy. For a 200-seat operation with three turns of staff per year, it becomes a real records-management problem. Sign-in sheets in a manager's drawer don't survive contact with that level of churn. Whatever system you use, the test is the same: if an OSHA inspector asks you for complete HazCom training records for every current employee, can you produce them in under ten minutes? If not, that's the gap to close first — well before working on the rest of your program. Restaurants that track training across HazCom, food safety, alcohol service, and other obligations in a single audit-ready system survive inspections cleanly; restaurants that don't, don't.
Specific Citation Patterns in Restaurants
Federal OSHA doesn't run a National Emphasis Program targeting restaurants specifically as of mid-2026, and the high-profile chemical-incident press releases tend to feature manufacturing rather than foodservice. But routine inspections cite restaurants for HazCom violations constantly, and the patterns are consistent.
The cleanest documented restaurant HazCom enforcement case remains a 2012 OSHA action against an IHOP location in South Charleston, West Virginia, where nine employees were hospitalized after incompatible cleaning chemicals were mixed and produced chlorine gas. OSHA cited the company for failure to conduct a personal protective equipment hazard assessment, failure to develop and implement a hazard communication program, failure to provide training, missing eye protection, missing eyewash facilities, and missing safety data sheets. Five serious violations and $25,000 in proposed penalties. The underlying fact pattern — small kitchen, untrained staff, two cleaning chemicals that shouldn't be combined — is the recurring scenario inspectors describe, year after year.
Adjacent enforcement against suppliers underscores the same pattern from the other direction. In January 2025, OSHA cited a Pennsylvania chemical manufacturer that supplies foodservice operators with $161,310 in proposed penalties after a July 2024 chemical release hospitalized a dozen workers. The agency's release stated explicitly that the company "had no emergency response plan in place, and that its respiratory protection and hazard communication programs failed to meet federal requirements."
For restaurant operators, the takeaway is that you don't need to be a headline case to get cited. The routine inspection — health department referral, employee complaint, follow-up after a workplace injury — frequently surfaces missing SDSs, unlabeled secondary containers, and undocumented training. Each of those can be cited separately. A walkthrough that finds eight unlabeled spray bottles and three missing SDSs generates eleven separate violations.
Compressed Cooking Gases and the Multi-Employer Wrinkle
If your kitchen runs on natural gas or propane, those fall under HazCom too. The lines themselves are typically the utility's or the building owner's responsibility, but stored propane (outdoor heaters, certain mobile equipment) is yours, and you need SDSs and training that covers the asphyxiation and combustion hazards.
Refrigerant in walk-in coolers and freezers — typically R-404A, R-448A, or R-449A in newer systems — is technically a hazardous chemical on your premises, even though the HVAC contractor services the system. The pragmatic approach is to keep SDSs on file for the refrigerants currently in your equipment, which the service contractor can provide. You're unlikely to handle refrigerant directly, but the multi-employer worksite logic applies: when a contractor brings chemicals onto your site, you need to know what's there.
The same multi-employer logic runs the other direction for pest control. Most restaurants use a licensed exterminator for routine treatment. The exterminator's employees are covered by the exterminator's HazCom program. But you're operating in a multi-employer worksite, and OSHA expects information exchange — your operator should know what products are being applied, when, and what to do if there's a problem.
A Practical Compliance Checklist
A restaurant can be HazCom compliant with a focused setup. The components:
- Written HazCom program. One to two pages, site-specific, naming a real person responsible. We walked through what each section needs in our written HazCom program post.
- Chemical inventory. Every chemical product on premises, by product name, location, and SDS reference. Walk-the-facility check at least quarterly.
- SDS library. Current SDS for every chemical on the inventory. Whether that's a paper binder in the manager's office or a digital library accessible from any phone in the kitchen, the test is whether any employee can find any SDS during their shift without barriers.
- Manufacturer labels intact. Every shipped container keeps its original label.
- Secondary labels. Every refilled spray bottle, every sanitizer bucket, every transferred container has a label with the product name plus hazard information.
- Documented employee training. At hire, in a comprehensible language, on the chemicals each employee will actually handle. Records reconstructable per employee.
- Chemical storage physically separate from food. No cleaning products above or adjacent to food storage. No empty food containers used to hold chemicals.
- CO2 system handled correctly. Cylinders labeled, SDS on file, training covering asphyxiation hazard, monitoring/alarm where required, written prohibition on employees entering confined or below-grade spaces to investigate beverage-system anomalies.
- Emergency Action Plan under 29 CFR 1910.38 if you have more than ten employees. Describes evacuation, alarm system, and what employees do for any chemical release that exceeds incidental thresholds (the answer is almost always: evacuate and call 911).
- Health-department compliance maintained separately. Sanitizer concentration logs, food contact surface protocols, and Food Code obligations are not HazCom — but inspectors increasingly cross-check, and operators who maintain both cleanly come through both inspections cleanly.
The Bottom Line
The food exemption in OSHA's Hazard Communication Standard is narrow. It covers the food and drinks you sell — full stop. The degreasers, sanitizers, fryer chemicals, drain cleaners, pest control products, and compressed gases that keep your restaurant running are all covered by HazCom, with no exceptions for small operations or franchise units.
The compliance picture isn't complicated, but it has to actually be done. A real chemical inventory, a current SDS library, labels on every secondary container, training that's documented per employee in a language they understand, and serious attention to the CO2 system if you have one. Restaurants that handle these well rarely get cited. Restaurants that assume the food exemption gets them off the hook regularly do.
And the CO2 piece is not optional. The fatalities are documented, the cause is well-understood, and the fix — monitoring, training, written evacuation procedure — is straightforward. Every restaurant operator with a beverage carbonation system should know exactly what happens if the line leaks, who's allowed to investigate, and what the alarm threshold means. That knowledge is the difference between a maintenance event and a coroner's report.
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