Ok, I know this started as commentary on Belizean unemployment, but has quickly turned into something else.
I think one of the main points of the article is that what usually happens in many countries: The US, Belize, the EU and others is that the newest wave of immigrants who are willing to do "the jobs no one wants" are just replacing those who came before them and are now affluent enough, or manipulating the system enough, to be picky about how they procure their income. It has happened in this country (US) many times since the middle of the 19th century (think: the Irish, Polish, Italians etc.)
Modern case in point: the rebuilding of New Orleans. I have been to Nola many times (it's only about 5 hours drive time from here)and on my visit last year I was surprised by the number of Latinos on Bourbon St. for the Halloween festivites. In fact, this year there are so many in the city they are going to have a "Latino Festival" this month or next (i forget which). Well, they live there now, working on the rebuilding of the city. And no, they are not getting paid "slave wages". The State of LA Employment office has seen to that (they knew it might be an issue after the Hurricane). THe deal is that many of the people who lived there before would not come back to work even though lodging is provided for those who do not have a house/apt. anymore and there were many many companies looking for workers with ads on the radio, newspapers etc. even in ours and the surrounding areas (we had a lot of evacuees here). If you know the demographics of Nola, you know what I am talking about.
The point being that in any ecological system, whether it be human beings or animals, if there is an empty niche, the individuals who can occupy that niche fastest and most efficiently are the most successful.