"Farm workers had low individual earnings from farm work; the median income from farm work was between $2,500 and $5,000. Three-fourths earned less than $10,000 annually."
Right, but they make all their money over a few months, so the per-hour take home is more than Wal Mart. I'm not suggesting that it's a good job, only offering an explanation as to why someone would choose to do it vs. a minimum wage job.