Once while recovering from an injury, I was put on data entry. I learned it in 15 minutes and I played it well.
Full disclosure:
After an hour of data entry I was pulling my hair out with boredom, and pleaded with management until they changed my temporary duties to forklift operator.
But you wouldn’t say that the data entry people weren’t doing any work, but that they were doing work you couldn’t stand (because it was mind numbing).