Eelementary said:No offense, it's a nice sentiment.
But why should we thank them for doing their jobs properly?
Do you like a word of thanks or a congratulations when you do your job properly, or do you just like to be berated when things go wrong and never have anyone say a nice word to you.
I sure appreciate it when someone tells me i've done well, because all too often people are quick to criticise and very slow coming forward with priase.