No one knows exactly how many chemicals are present in American workplaces–but the estimates are staggering. The total number of chemical substances that have been registered in the Chemical Abstracts Service Registry reached 290 million in 2025. So perhaps it’s no surprise that hazard communication tops the list of most-cited OSHA violations.
And that’s tough on businesses. Sliding out of OHSA’s good graces costs companies millions annually, between fines, legal fees, and internal time and effort. The good news is most of these citations (and the related risk to workers) are avoidable.
