Hello there, HSBREH.

In QuickBooks, we can only assign one class per employee. That means we can only use 1 workers' compensation per employee.

You may want to read through these articles that tackle worker's compensation and its calculation: 

• Learn about and get workers’ compensation insurance.
• Washington workers' compensation setup and calculations.
• Assign a Workers' Comp Class to an employee.

If you have any other follow-up questions about the payroll expenses, get back to me by commenting below. I'm more than happy to help. Have a great day!