Specific example I didn't manage to get typed in above:
Pruning grape vines properly and tending to their trellising is a semi-black art. You can train someone how to do it in a few hours, then they need supervision for the first few hundred hours, and the new person tends to screw up a bit, which messes up the vine and the yield. Also, it's pain-in-the-bleep work, and a bit physically demanding.
Someone who is *good* at it is 4-8x as productive as someone who is merely "OK" at it, or new to it.
So, previously to get this job done, we hired 3-4 people, at $15-$20 an hour, and then spent additional payroll for someone to train and supervise them. It was a constant pain hiring, training, and retaining novice workers.
Now we pay one guy $30+/hour, who does the work of 3-4 novice workers, in less time, with better results, while freeing up our other skilled staff to attend to other functions. He always shows up, doesn't quit because "the work is hard", and gets the job done very well.
Result: one living wage job created, 2-3 jobs eliminated. Payroll *reduced*. Pain-in-the-bleep staffing/training issues eliminated.