years: like the UK, the US workforce is 'slowly but surely converting itself from a full-time to part-time worker society', the reasons are obvious and explained in this post. But this isn't the only 'schism' and as Tyler mentions, it is very much an "under the radar" phenomenon; when I see - and I do - the changing 'categories' of employees in UK stores and other outlets I begin to wonder whether the same is happening this side of the pond; (apologies for multiple links to one site but it's an interesting tale).
So, if you're old, vote for Obama! Owsblog does not endorse this message!
P.S. Mark Steyn on form: "But let him keep the bomber jacket."