Can't you simply test by asking what happens if the person stops doing their job? If nothing detrimental happens, then the job was probably bullshit.
go remove some guys that do legal compliance stuff and when the random inspection happen years later, you'll find out that maybe it would've cost you less to keep that employee.
Planes can keep flying without a pilot for quite awhile, until they run out of fuel or crash into a mountain.
Bad news: you have been rejected from consideration for any work related to realtime/life critical systems.
Good news: you may have a future in politics, at least in the county I live in.
"What will happen if this person stopped doing their job?"
"Oh the important monthly reports will stop going out."
"Oh, okay, we better not have them stop doing that then."