What happens to a user account when I delete an employee?

This depends on how you delete the employee. There are three scenarios:

1. If you edit an employee and change their status to Archived, this will change their associated user account status to 'Disabled' preventing them from logging in. Changing their status in the employee file back to 'Current' will then enable again the account access or you can manually enable again the account under Company Users.
2. If you delete an employee, this will delete their associated user account. This cannot be reversed.
3. If you make an employee a leaver, this will also delete their associated user account. This cannot be reversed.