The damndest thing is that they're now looking for doctors. A
few years back, the Immigration Department was telling everyone
that if you're a doctor or lawyer, don't even bother applying
because there was an excess.
As for the tradesmen, they get a lot of protection from not only
the unions, their trades are covered by law as well. For example,
unless you're qualified, it's technically illegal to shut off the
water mains to your house. Hell, for all they abuse they put up
with as apprentices, I suppose I'd be motivated to cash in too.