Honestly, I don't think it's much different than in the secular world. There are good and bad employees, honest and dishonest businessmen. But then, I guess that's the point - it SHOULD be different and we were told repeatedly how DIFFERENT we were, but the truth is that is simply not the case.
My ex-father in-law owned several contracting/construction related businesses. He got the point that he was very reticent about hiring JW's for many of the reasons mentioned already. One thing he had a real beef with was, even though he was a pretty staunch JW, that his JW employees would spend half their time trying to 'informal witness' to their co-workers - and even count their time while he was paying them to work. They seemed to think that just because he was a JW that he wouldn't care. He had many JW's file worker's comp on questionable cases. One brother he hired had a previous injury but was given a job because he was in need. He ended up repaying that kindness by claiming that his injury happened on his current job and actually sued my ex-father in-law over his worker's comp.
I guess in all the Bible-quoting that the JW's do, they forget the scripture "neither a borrower nor a lender be"....I've seen a number of cases where JW's lent money to other JW's and it turned out badly. Not a good idea. Of course, for the most part, friendships and lending money aren't a good coupling....