What are common indoor air quality (IAQ) problems in workplaces, and how can they be mitigated?

• A. Noise and glare; mitigate with better lighting and ear protection.
• B. Humidity only; mitigate by dehumidification.
• C. VOCs, dust, mold, CO2 buildup, and humidity; mitigate via source control, ventilation improvements, filtration, and moisture management.
• D. Ventilation is never needed.

Answer: (C)

Workplace indoor air quality problems come from chemical contaminants, biological growth, and moisture-related conditions, and reducing them relies on a combination of source control, ventilation improvements, filtration, and moisture management. VOCs from cleaners, solvents, and furnishings can off-gas into the air; dust and other particulates accumulate from occupants and materials; mold grows where moisture remains; CO2 buildup signals that outdoor air isn’t meeting the needs of the space; and improper humidity can promote both mold and irritations. To address this, use source control to remove or reduce emissions at their source, improve ventilation to dilute and remove contaminants and ensure even distribution, upgrade filtration or add portable cleaners to capture particles, and manage moisture by fixing leaks, drying damp areas quickly, and maintaining humidity in a comfortable range (roughly 30–50%). Regular IAQ monitoring for CO2, humidity, and other indicators helps catch problems early. Noise, glare, or ergonomic issues relate to comfort but don’t address these contaminants, humidity alone misses several key factors, and ventilation is essential rather than something never needed.