Interactively, I would use wrkUsrJob but that seems to obvious.
This will show all jobs for the user
User whose jobs to display . . . UserID
Status of user jobs . . . . . . *ACTIVE
In cl I would look at
RTVJOBA2 TAATOOL if you have TAATOOL\
You could call a CL or CLLE to use the RTVJOBA2 command if you have it
It can return status.
Hopefully someone else will step in with some nifty code.