I have an employee that has gone back

Good day to you, @gcwcmaster.

You'll want to go to your employee profile and change their status from there. I'd be glad to guide you through the steps in your QuickBooks Online (QBO) account.

1. Go to the Payroll menu.
2. Select Employees.
3. From the All Employees drop-down, select Inactive Employees.
4. Select the terminated employee from the list.
5. Click the Pencil (edit) icon from the Employment section to edit.
6. In the Status drop-down, select Active to activate the employee. 
7. Then click Done to save the changes.

You can also see this article for more details: Terminate or change your employee's status on payroll.

Let me also add these links that you can use for reference. These resources can guide you in running your payroll seamlessly and lets your employee's view their paycheck online:

• Process or run payroll
• Invite your employees to QuickBooks Workforce to see pay stubs, W-2s and more

Please know that you're always welcome to post a reply in this thread if you need further assistance managing your employee's. I'm just a few clicks away from you. Wishing you and your business continued success!