Hi sedky!
I think this is unusual. Perhaps, you can tell your friend to inquire in their
HR department about his/her situation. Maybe
HR doesn’t know about this. However, if
HR is the one committed the lapses / fault for the delay of the employment contract, your friend can probably ask the assistance of his/her department head or unit head to talk to
HR to fast track his/her employment contract. It would be best for your friend to travel after completing all his documents.