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flag Maryland had the most hazard communication violations in the U.S. from 2021 to 2025, with manufacturing and construction leading in citations.

flag A 2026 analysis of OSHA data from 2021 to 2025 found 36,984 Hazard Communication (HazCom) violations nationwide—5.6 per 100,000 workers—with Maryland having the highest number and rate of violations. flag Manufacturing and construction accounted for over half of all citations, though manufacturing had a higher violation rate per inspection despite fewer inspections. flag Despite a significant decline since 1989, HazCom remains one of OSHA’s most frequently cited standards, highlighting ongoing challenges in labeling, safety data sheets, and worker training.

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