The inestimable Megan McArdle has a post on her blog over at The Atlantic where she argues that the work performed by illegal migrant workers requires more skill than we Anglos normally give credit for. Specifically, she writes about her experience at a pick-your-own raspberry farm. She noticed that a lot of the fruit was either missed or wasted, combined that with the aches and pains she felt for days afterward, and voila, picking fruit takes more skill than you realize.
Ordinarily I see Megan's point in everything she writes, and I agree with almost all of it. In this case, however, I believe the pain in her hamstrings has influenced her judgment. By her own admission, purple raspberries are an obscure, not widely grown fruit, which is more difficult to harvest than other varieties. That's probably why so few farmers grow them.
Even so, she lists only five rules for picking the fruit:
1. Get low to the ground.
2. Look under the leaves.
3. Go around to the back side of the bush.
4. A GO condition for the color--it must be purpler than some value of red, or it will be unripe.
5. A NOGO condition for gloss--the fruit cannot be too matte, or dull colored, because that means it is overripe and will mold.
By working with a skilled trainer, a sufficiently motivated trainee could learn these distinctions within about 500 iterations of the task. "That one is too dull. That one is too red. You forgot to look under all the leaves." That is a single basket of fruit. By sufficiently motivated I mean that is you cannot learn to get all of the acceptable fruit, and only the acceptable fruit off a bush, within a couple of hours, we fire you and you go back to unemployment. Once these quality control tasks are learned, the remainder of the job consists of physical conditioning and coming up to standard speed.
One week, or at most two, would be sufficient to master this job. Maybe a couple more weeks for other crops. This means the first farmer to hire an inexperienced picker suffers the losses during the learning curve, but the other farmers in the picking season will benefit thereby.
In my factory, it takes about a month to get signed off at the entry level machine operator position. With the current level of unemployment in our area, we are having no problem filling positions at a starting rate of $8/hour.
All labor is honorable, and some jobs are a lot tougher than others, but picking fruit is still unskilled labor.