If you have an employee who has left your business and rejoined, you can simply reinstate their old profile rather than creating a new account. Reinstating their account means you won't need to set up their details from scratch and means their same email address can be used.
Reinstating an employee
To reinstate a past user, simply go to your Company tab and select Employees. At the top of your page, select 'Past Employees'.
On the next page, simply click 'Reinstate' beside the user you'd like to undelete and they will show on your Employees page again.
As Locations and Roles are unassigned when an account is deleted, these will need to be added back too.