Joiners and leavers look like the simplest tickets on the queue and they produce the longest tails. A new starter with a missing group cannot do their job and will be back within an hour. A leaver with access nobody removed is a finding in the next audit, and by then the person who closed the ticket has forgotten it.
A new starter, in order
- Read the approved request and note the exact role, start date and department. These decide the organizational unit and the starting groups.
- Create the account with the company naming convention rather than a convention of your own. A logon name that does not match the pattern will break something later.
- Put it in the organizational unit for that department. Policy follows the unit, so the wrong unit is a real fault even when the account works.
- Set the account to require a password change at first sign in, and set an expiry date if the person is a contractor.
- Add only the groups the approved role entitles them to, and nothing extra because somebody similar has it.
- Confirm the mailbox exists and the device is built, then write down what you created so the next person can see it.
A leaver, in order
- Confirm the leaving date and the approval before you disable anything. Disabling early is its own incident.
- Disable the account rather than deleting it, so the audit trail and file ownership survive.
- Remove group memberships, and write down which ones you removed in case access has to be reinstated.
- End active sessions and sign the account out of its devices, because a disabled account can still have a live session.
- Handle the mailbox the way policy says, whether that is converting it, delegating it to a manager, or leaving it in place for retention.
- Chase the access that lives outside the directory: shared mailboxes, distribution lists, third party applications, building passes and hardware.
The reason these two tickets are worth practising is that neither is technically hard and both are easy to half finish. A termination that leaves the account disabled but still in three groups is the classic partial close, and it grades as one, because the access is still there for anyone who reinstates the account.