When a professor stays in another university as a visiting professor during his sabbatical leave, his salary is partially paid by his home university. Then, he is not a regular employee of host university, but how is the official processing?
For example, he needs lots of employment stuff such as ID, parking, etc. Thus, he should have a profile with the human resource.
Is he hired by the university (HR) or directly by a department?
Does he need to provide regular documents such as academic credentials (diploma, transcript) or an employment status from the home university is enough?
Following these questions, when he teaches a course or supervises a student, what is his employment reference in official records? I mean can a guest professor teach/supervise without official records in the university HR?
EXAMPLE: A full professor goes to another university on sabbatical leave whether for teaching or research. He needs ID card, and normally HR or similar central unit issues the ID card, not individual departments. Shouldn't he have a record in the HR files as the reference for the ID card issued?
My question is: When the HR is creating a file for a visiting professor/scholar/researcher, what documents should be supplied?