Taking Pharm tech job to guard the cabbage patch

If someone had a pill habit would it not be easy to take a job as a pharm
tech.  Most everyone would qualify and the big chains can't afford to do
much of a background check.  Seems it would be easy for someone in a job
like this to siphon off a few pills every day, in their pocket, or being
passed to an accomplice through the drive-up window.

I can see this would be difficult with oxies or other C-II meds, but the
C-III and C-IV stuff, like the vikes and tranqs they don't inventory too
tightly.  Or if they're afraid of being caught for outright stealing the
pills, it ought to be pretty easy to slip a phony Rx into the system.
They work there all day, it should't be too hard for someone to figure out
how to write, call in, or otherwise get a fake scrip.  One would thing
this might be a good fringe benefit for an otherise crummy McJob.

In a similar vein, I can see it would be quite easy for a locum tenens
pharmacist, called in to work a couple shifts in a store, to make a bottle
of pills disappear.  No one will notice them missing till the end of the
month and by then it would quite difficult to find whom to put the blame
on.