Steel collar

Definition
Steel collar refers to

"thing"

- [t]hings]] in the workplace that replace or augment human labor. A 'steel-collar workforce' is capable of tirelessly and efficiently performing repetitive tasks or monitoring. |undefined

Overview
"Playing off of the terms 'blue collar' and 'white collar,' the phrase was first coined in the early 1980s referring to a robotic threat to US manufacturing jobs."