I have a solution for your Workers Comp expiration dates, DebbieJ2020.
Yes, you're right. Tracking of vendors and subcontractors' expiration dates and Workers Comp isn't possible. You can search for a third-party app so you'll be able to do this in QuickBooks Online
You might also want to check out news and updates in QuickBooks which includes product improvements in The QuickBooks Blog.
For more information about workers' comp reports, you can go over and read through this article for your reference: Understanding Workers' Comp Report.
Stay in touch and let me know if you have any questions related to payroll. Remember, I'll always be right here to help you.