Implicit login in AIX

only wanted to know .. if I have some tivoli jobs running with different user .. will this mean that everytime the job invokes .. the .profile runs for that user ... or is it that the .profile runs only at explicit LOGINs ...

e.g if a cron calls a job under some user, does it run the .profile of the user under whose login the job is running.

When talking about cron, it does not invoke the .profile.

I don't know what the Tivoli application does.