What about staff being on the straight and narrow because they are nice people and have respect for their employer
There are more genuine people out there than you think
Yes but I am far too cynical to ever admit that you may be right. Speaking as someone who fiddled and stole from every employer I ever worked for and everybody else I know just about has done the same. I am not going to be that quick to give anyone the benefit of the doubt.
Are you saying you're a thief, Vince? 
Yes basically, isn't everyone?
I don't think I am.
Have you never taken a pen home from work or found a coin in the street?
Not done the pen; that I can remember, anyway.
I've found coins and notes- yes- and put them in my pocket. But I didn't know who they belonged to, if that makes me a thief then, fair enough

. If I saw someone drop some money I would tell them.
I always think- that I don't think I should have, something that isn't mine (or rightfully mine).