I employ people, and two have complete server access now for a while.
It is a very tricky situation and you need to tread carefully.
Once I hired someone from elance (Ravi Shanker, he runs around at other freelance places with similair names and even has the nerve to cite http://www.virtualgamingconference.com and http://www.casinos2bet.com as references. Stay away, far away from this crook!
He is from India and contracted with a bunch of programmers. I had them work on the two above sites. Apparently Ravi did not pay his people or had some sort of dispute with them, and they went into my properties and destroyed all the backend stuff. I have only just started to resurrect virtual gaming and casinos2bet is still in ruins.
He just stopped all communications and that was that. I even had a person I knew in India go to see him and there was just nothing to be done – he refused to fix things.
So, giving anyone complete access to any of your sites puts you at risk. You better know and trust the people.