Unskilled, but none of the managers I had (not WM, mid size mail order company) could keep up. All of them had broken racking, run the forks through walls, and/or torn dock doors off. They were slow, and would put bad pallets in the racks.

So the company liked doing cutting edge corporate stuff and reading books about various CEOs. One time they had us take skill surveys (thinly veiled IQ tests) to optimize new hires. The first batch was based off the high performance people and all quit after two weeks because they were smart enough to know bullshit. The second group was based off the long timers and also didn’t last because they were dumb as rocks. After that they went back to shotgunning everyone at it and seeing what sticks. Open interviews, always posted.

"Unskilled" meaning you can teach someone to do the job reasonably well off the street in a few hours. Unfortunately robots are not humans and thus need to be meticulously designed while a guy just needs a decent paycheck and benefits.