It would be helpful to have a checkbox at the Paycode Setup level for "Subject to Workers' Comp". If this is not marked, then disable the field to fill in the Workers' Comp code at the Employee Paycode Maintenance. Many times there are paycodes, (like for Expense Reimbursements, and there could be a long list of Expense Reimbursement codes) that should not be subject to Workers' Comp, but this gets filled in when paycodes are assigned because the WC Code is filled in on the Employee Maintenance. Then users have to remove the WC code from paycodes that shouldn't be subject, or possibly update in Payroll Transaction History.