Verify the second state’s worker’s compensation payroll calculate exists. If not create it.

Open 5-3-1 payroll calculation and create a second workers comp calculation.
Enter the number for the new workers compensation calculation.
Enter Description.
Select tax type 11-workers compensation.
Select Cal Type 3-Employer cost.
Select Calc Method 17-Tables.
Enter the state abbreviation in the Tax State.
Save
Open 5-3-2 Workers’ compensation table and […]

Resolution for '3-Employer cost issue: 'Workers compensation is not computing for a second state.' available: Yes.

The 3-Employer cost issue or error code is a known related to Sage Accounting products. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the 3-Employer cost issue yourself by looking for a resolution described in the article. If it is a complex 3-Employer cost issue or you are unable to solve the issue, you may contact Sage Repair by clicking here or by using other 3-Employer cost support options.

For more information about resolving issues related to 3-Employer cost in Sage Accounting or to get support for the issue 'Workers compensation is not computing for a second state.', click the link below: