Hi there, @beveee.
I've got some information regarding how the employee handbook in QuickBooks Online gets updated.
QuickBooks Online releases updates on the employees' handbook if there are any policy modifications made. That said, any updates that are made available will be applied automatically in the Employee Handbook Wizard.
As of the moment, there are no current changes on this matter. To learn more about the tools that you can find on your HR support center, please check out this reference: Learn how Human Resources Services works in QuickBooks Online Payroll, and what you can do with it.
Get back to me if you need more help with your employees or with QuickBooks. I'm always up to assist you. Keep safe!