The purpose of the Class Code Lookup application is to provide the ability to search for classification code (Class Code) information by either the 4 digit Class Code, by entering a partial Class Code Description/Phraseology or by Industry Group.

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Class Codes are used to group common employers so that the rate for each classification reflects the exposures common to those employers. The details provided in this search include applicable classification code rates and minimum premiums by effective and expiration date, status of the class code and code description/phraseology. All rate data in Class Code Lookup is updated with the annual rate filing approved by the Office of the Commissioner of Insurance (OCI).

If you need more detailed information regarding the use of Class Codes, please see the WI Basic Manual.

Statistical Code (STAT code) information is not available in this Class Code Lookup application search feature.
Please see the WI Statistical Plan Manual or the Miscellaneous Values Table for information related to STAT codes. [show less]

Search By Class Code
Enter 4 Digit Class Code:
Search By Class Code Description
Class Code Description containing of these words
Search By Industry Group
Select Group:

Class Code Changes Reported December 2023

Other Class Code Resources:
  • Find Class Code Descriptions: WI Worker's Comp Class Code Manual Phraseology Order provides class code descriptions sorted alphabetically
  • Find Class Code Numbers: WI Worker's Comp Class Code Manual Class Code Order provides class code details sorted by class code number
  • Circular Letter 3261: A complete listing of the 2024 rates
  • Rate Download: Download rates in WCRATE and EXCEL format
  • Miscellaneous Values Table: View the Miscellaneous Values Table, Rate Revision History and WI Department of Workforce Development Maximum Wage and Rate Chart