He won't. Oswald doesn't "take jobs", Kate. He's a crime boss, not some errand boy and I'm a little offended you would ask that of him.
Or of me.

[Plus Oswald only ever does things to benefit himself and Ed can't see how this would aid him in any way.]

So no.
If you want tabs kept on your mother you find a guard that seems corrupt and you offer him cash to do so.