I never thought of that reason, in fairness I don't blame employers thinking that way now that you mention it! I guess there are a lot of people that head back for various reasons (could even be us) , and it's almost like we need to prove we're prepared to stay. I suppose as long as we put in some effort hopefully we'll be rewarded..
And yes I guess the WHV could have been an issue when we were there before, I know traveling came first when we were there and work just provided the money we needed to see some of the sights. He managed to find some work eventually, but he was being very fussy then