QuickBooks Desktop Payroll: Missing Workers Comp 'Class'

I appreciate the information you've shared, PK2K.

Worker's compensation calculations are automatically added to your file. This will depend on how you set up the rate and wages. You can check the settings and information when you create the classes by payroll item.
 

However, if the issue persists I recommend reaching out to our Payroll support team. This way, they can check your account and verify the root cause of the issue. Here's how;

1. Go to the Help menu and select QuickBooks Desktop Help.
2. Click Contact us.
3. Enter Missing Workers Comp Class on the search box and tap Search. 
4. Hit Start message. 

In addition, You can check this article that'll guide you on how to view desired worker's compensation info: Workers’ Compensation report.

Feel free to get back here if you need further assistance in accessing the Workers Comp feature in QuickBooks. I'm always here to help you. Have a good one.

Thanks, and I guess that I'll need to contact payroll support - i.e. I've been using QuickBooks workers comp setup/reports via Assisted payroll for many years and this issue is specific to some of the 'classes' for the workers comp expense showing as 'uncategorized' vs getting 'split' by payroll earnings item (in Company preferences) for one client's file (and I've already tried verify & rebuild, etc.)

I would agree too, PK2K.

Our Assisted Payroll Support is always available. You can either reach them using the steps that DebSheenD shared or click this chat link: https://intuit.me/3IHnvZe

Take care and have a good one!