Class code (workers' comp)

Published 2026-06-12 · by Brokly

In plain terms: A standardized code that groups businesses by the kind of work they do — your workers' comp rate is set per class code, not per business.

Why it matters to you

The same payroll dollar costs a very different premium in different class codes, because each rate reflects that trade's injury history. Misclassification cuts both ways: the wrong code can mean overpaying for years — or an audit bill when it's corrected.

Where you’ll see it

On workers' comp quotes, policies, and audits — and across this site: our trade pages are organized around these classes.

Related terms

Definitions describe how policies are typically structured — exact terms live in the policy. Not legal or compliance advice.