The Classification Search helps you locate classifications based on keywords that are part of, or commonly associated with, classification phraseologies. Enter a search term or classification code below to begin your search. Narrow your search by choosing an industry group or related classifications from the "Filter By" pulldown menu. Refer to the Insurance Commissioner's rules regarding the Standard Classification System in Part 3, Standard Classification System, of the California Workers' Compensation Uniform Statistical Reporting Plan—1995 (USRP).
2020 Quick Reference Guide – Summary of Approved Changes to the USRP, ERP and Miscellaneous Regulations
2019 Quick Reference Guide – Summary of Approved Changes to the USRP and ERP
Classification Search Tips
Click on a phraseology or code in the search results below to view detailed information such as phraseology, footnotes, rules and pure premium rates for that classification. To view the search results in alphabetical order, click on the "Phraseology" link at the top of the column. To view the search results in numerical order, click on the "Code" link at the top of the column.
IRRIGATION, DRAINAGE OR RECLAMATION WORKS OPERATION — all work incidental to maintenance and operation of irrigation, drainage or reclamation districts
WAREHOUSES — cotton — including cotton compressing.
COTTON MERCHANTS — including cotton compressing
|0401||COTTON GIN OPERATION — during both active and dormant seasons — including installation or repair of equipment; yard employees; seed or fuel haulers|
MINING — surface — no shafts, tunnels, or drifts — all employees
|1123||MINING — underground — with shafts, tunnels or drifts; all employees with exposure to ground mining operations|
MINING — underground — surface employees
|1320||OIL OR GAS LEASE OPERATORS — all operations|
OIL OR GAS WELL SERVICING — N.O.C. — by contractors using well service or work-over rigs — no drilling or redrilling — including Outside Salespersons
BLASTING — N.O.C. — all employees
|1438||SMELTING, SINTERING, REFINING OR ALLOYING — metal — not lead — N.O.C.|
|1452||MINING — ore milling — including sample analysis, crushing, concentration and separation|
|1463(1)||ASPHALT WORKS — grinding, pulverizing or mixing asphalt|
|1463(2)||BRIQUETTE MFG. — coal or wood|
|1463(3)||COKE MFG. — by-product ovens|
QUARRIES — including all employees engaged in installation of machinery and construction, repair and maintenance of all buildings, structures or equipment
|1624(2)||EXCAVATION — rock — no tunneling|
|1699||ROCK, MINERAL OR GLASS WOOL MFG.|
STONE CRUSHING — including construction, repair or maintenance of all buildings, structures or equipment and the installation of machinery
The Classification Search was developed by the WCIRB for your convenience to help you identify Standard Classifications based on keywords or a classification code. However, you cannot rely solely on the Classification Search and must make an independent assessment when determining the appropriate classification(s) assignable to a risk in accordance with the USRP.