Clean indoor air is critical to workplace safety. In offices, warehouses, factories, schools, and healthcare facilities, poor air quality may lead to headaches, fatigue, asthma attacks, respiratory illness, chemical exposure, and in severe cases, long-term lung disease. Dust, fumes, vapors, mold, cleaning chemicals, and poorly maintained ventilation systems all affect the air workers breathe every day.
Good air quality depends on controlling pollution sources, keeping the ventilation system in good shape, and responding quickly when employees report problems. Even though the Occupational Safety and Health Administration (OSHA) does not have a specific indoor air quality standard, many OSHA rules on ventilation and specific chemicals, along with industry guidelines, help employers design and maintain healthier buildings.
Use these seven tips to improve air quality at work:
1 Assign an indoor air quality coordinator.
Name a person to lead indoor air quality efforts and give them clear authority and time to do the job. The coordinator tracks complaints, works with maintenance and supervisors, and walks the building regularly to check for unusual odors, visible mold, moisture damage, blocked vents, and other warning signs.
2 Maintain and improve ventilation.
Make sure your heating, ventilation, and air conditioning system is working as designed and bringing in enough outdoor air. Follow a preventive maintenance schedule for filters, belts, coils, and ducts. Keep written records of inspections, repairs, and airflow checks. Where possible, upgrade to higher-efficiency filters to reduce dust, smoke, and other fine particles in occupied areas.
3 Control dust, fumes, and chemical vapors at the source.
Reduce indoor pollution whenever possible. Store chemicals in closed, labeled containers and follow manufacturer instructions for safe use. Use local exhaust ventilation for tasks such as welding, painting, printing, or mixing chemicals that create fumes or vapors. Install dust collection systems in woodworking and manufacturing areas. Avoid performing high-dust or strong-odor tasks in occupied areas when possible.
4 Prevent and correct moisture and mold problems.
Inspect roofs, plumbing, and building walls for leaks or water damage. Repair problems quickly. Dry wet materials within 24 to 48 hours whenever possible to prevent mold growth. Remove and replace materials that stay wet or show visible mold. Keep indoor humidity at a moderate level to limit mold and dust mites and to improve comfort.
5 Keep work areas clean and organized.
Follow regular housekeeping practices to reduce dust buildup on floors, equipment, and surfaces. Use wet methods or HEPA-filtered vacuums when cleaning dusty areas to avoid spreading particles into the air. Avoid dry sweeping in areas where fine dust is present. Good housekeeping supports better air quality.
6 Monitor changes in the workplace.
Pay attention to new equipment, renovation projects, new chemicals, or changes in production that may affect air quality. Review Safety Data Sheets for information about airborne hazards. Evaluate ventilation and controls before starting new processes to prevent problems.
7 Train employees to recognize and report problems.
Provide simple training on common indoor air hazards, typical symptoms, and how to report concerns. Encourage employees to report odors, visible mold, standing water, unusual dust, or sudden increases in headaches, coughing, or irritation. Respond to complaints promptly. Investigate the area, talk with affected workers, and document findings and corrective actions. Share results so employees know their concerns are taken seriously.
Improving indoor air quality takes planning and teamwork, but the benefits are immediate. Cleaner air protects workers and improves productivity. For complex processes or repeated complaints, employers may need a qualified industrial hygienist to evaluate exposures and ventilation systems.
For free, confidential, on-site help with air sampling and other OSHA compliance issues, contact DWC’s Occupational Safety and Health Consultation (OSHCON) Program at OSHCON@tdi.texas.gov, 800-252-7031, or www.txoshcon.com.