Chemicals are present in virtually every workplace, not just factories and labs. They show up in cleaning products under the break room sink, in the glue holding office furniture together, in the dust kicked up on a construction site, and in the steam rising from a hair salon’s straightening iron. Some are harmless at the levels you encounter. Others, with repeated exposure over months or years, can cause serious health problems. Here’s where they actually are, industry by industry.
Offices and Indoor Workplaces
Office environments seem clean, but new furniture, carpeting, and equipment release volatile organic compounds (VOCs) into the air for weeks or months after installation. Testing on common furniture items like desk chairs, tables, sofas, and cabinets found toluene as the dominant chemical released, with concentrations averaging 330 micrograms per cubic meter and ranging as high as 857. Ethylbenzene was the second highest, averaging 115 micrograms per cubic meter. Even benzene, a known carcinogen, was detectable at low levels across all furniture types tested.
Printers and copiers add ozone and fine particles to the mix. Cleaning products used on floors and bathrooms contain ammonia, bleach, and their own set of VOCs. In a well-ventilated building, these concentrations stay low. In a sealed office with poor air circulation, they accumulate. If you notice a persistent chemical smell after a renovation or furniture delivery, that’s off-gassing, and it typically fades over several weeks.
Construction Sites
Construction ranks among the industries with the highest chemical exposure levels. Workers in this sector show elevated blood and urine levels of several heavy metals, with arsenic concentrations exceeding acceptable thresholds in 16% to 58% of blue-collar workers, depending on the specific trade. Cadmium levels exceed safe limits in up to 11% of workers, and lead in up to 3%.
The sources are built into the materials themselves. Cement, concrete, brick, and stone all contain crystalline silica, which becomes airborne when cut, drilled, or ground. Breathing it in over time can cause permanent lung scarring. Old paint and pipes contain lead. Insulation materials like mineral wool can irritate the skin, eyes, and lungs, and older versions may contain asbestos. Sealants and adhesives release VOCs during application. Demolition and renovation work is especially risky because it disturbs materials installed decades ago, when regulations on mercury, lead, asbestos, and polychlorinated biphenyls (PCBs) were far less strict.
Healthcare and Laboratories
Hospitals and clinics use potent chemicals to sterilize surgical instruments and disinfect reusable devices. Ethylene oxide (EtO) is one of the most common sterilants. Short-term exposure causes headaches, nausea, and respiratory irritation. Long-term exposure is linked to cancer, reproductive harm, and nerve damage. The EPA banned the use of separate sterilization and aeration chambers in 2010 specifically because transferring loads between units was exposing workers to dangerous levels of EtO.
High-level disinfectants used on medical and dental devices pose their own risks. Repeated skin contact causes dermatitis, and inhaling the fumes can trigger or worsen asthma. Lab workers face additional exposures from preservatives like formaldehyde, reagent chemicals, and solvents used in tissue processing and diagnostic work.
Manufacturing and Industrial Cleaning
Factories use solvents to degrease metal parts, clean equipment, and thin coatings. White spirits, one of the most widely used industrial solvents, contain 15% to 25% aromatic compounds by weight, sometimes up to 45%. These aromatic compounds are the health concern: they include benzene-related chemicals that affect the nervous system and, at high exposures, increase cancer risk. High-boiling aromatic solvents used in specialized cleaning can be over 80% aromatic compounds.
Metalworking fluids, lubricants, and cutting oils create mists that hang in factory air. Paint manufacturing involves pigments, resin monomers, and organic solvents. Workers in wholesale trade and manufacturing consistently show higher concentrations of VOCs and acrylamide (a chemical formed during certain industrial processes) compared to workers in other sectors.
Food Production and Restaurants
The food industry has a chemical profile most people wouldn’t expect. Workers in food and accommodation services show the highest levels of phthalates of any industry, likely from food packaging materials and vinyl flooring common in commercial kitchens.
Flavoring production carries a more specific danger. Diacetyl, the compound that gives butter its flavor, causes a severe and irreversible lung disease called obliterative bronchiolitis when inhaled as a vapor. It scars the small airways in the lungs, permanently restricting airflow. Workers in microwave popcorn plants, bakeries, and flavored coffee facilities are most at risk. A substitute chemical, 2,3-pentanedione, was introduced to replace diacetyl but has shown similar effects on the lungs in animal studies.
Agricultural workers who supply the food chain face their own exposures. Workers in agriculture, forestry, and fishing show some of the highest levels of the herbicide 2,4-D, along with elevated levels of insect repellent byproducts.
Nail and Hair Salons
Salon workers breathe in a cocktail of chemicals throughout every shift. A study of nail salons in Colorado measured indoor toluene levels ranging from 26.7 to 816 micrograms per cubic meter. Toluene is a solvent found in nail polish, polish removers, and some hair products. At high concentrations it causes dizziness, headaches, and over time can damage the liver and kidneys.
Formaldehyde, used in nail hardeners and some hair-straightening treatments, was detected at levels between 5.32 and 20.6 micrograms per cubic meter across the salons studied. At least one salon exceeded the recommended exposure limit set by NIOSH. Benzene, a carcinogen with no safe level of exposure, was present in every salon tested, ranging from 3.13 to 51.8 micrograms per cubic meter. Small, poorly ventilated salon spaces make the problem worse, concentrating these fumes around workers who spend eight or more hours a day inhaling them.
How to Know What’s in Your Workplace
Every employer in the United States is required to maintain Safety Data Sheets (SDSs) for every hazardous chemical on site. These are standardized 16-section documents that list exactly what’s in a product, what health effects it can cause, and how to handle it safely. Your employer must make these accessible to you during every work shift, whether in a binder on the wall or through an electronic system. If you’ve never seen or been told about the SDSs at your job, you can ask for them directly.
OSHA’s Hazard Communication Standard, updated in 2024 to align with the latest international guidelines, also requires that chemical containers carry labels with a product name, hazard statements, pictograms showing the type of danger, and precautionary statements. Employers have until July 2026 to fully update their training programs and hazard communication plans to match the new requirements.
The chemicals you encounter at work depend heavily on your specific role, not just your industry. A hospital administrator and a hospital sterilization technician work in the same building but face completely different exposures. Pay attention to what you handle, what you breathe, and whether your workspace has adequate ventilation. The SDSs are there for exactly that purpose.