First the bad news... In the state of Florida, which is an "at will" employment state, there really is no job security, except that which you create yourself. In fact, any employer can can anyone at anytime, with or which cause or even explanation. dont tell the employers this, but technically, they can fire someone and not even have to provide a reason for it. to make matters worse, when said fired employee applies for a new job, and the new potential employer call the last one, the last one can tell them anything want, including things like "that one was horrible, lazy, etc, etc. and its completely legal (no defamation applies as its considered "opinion" under the state laws.) check it out, its all true...so unless its racial or sex discrimination, there is no recourse...
But there is some good news. employers are really paying attention to who's bringing home their bacon now, since its always so lean. so if your the one who working hard to make them money, it almost a given that they'll keep that person even over someone who's technically more qualified, because the bottom line is who's helping pay the rent...
down here we create our job security by making ourselves more valuable than the rest of the people we work with. So if your providing a steady income for them, reliable and not complaining (being positive goes a LONG way! even if you have to fake it!) A person with aptitude can always be trained to do another job when needed. the dude whos bitching and moaning but can already do the job, is probably at much higher risk for being gone than things first appear... job class ranking (via seniority, training levels, etc) is allot more important to the employee's, than the employer in most cases, and its allot easier for them to bring "up" someone to level they need than to fix a constantly broken high skill level person, those are the ones who'll go first when the time comes, in most cases anyhow..