These aren’t your father’s manual labor jobs. Manufacturing, warehouse and trucking jobs have changed. They require higher levels of skill and often much less heavy lifting and sweat-inducing labor than in the past. That’s why some are throwing out the term blue collar in favor of a newer generation term like “Industrial Artisans”.
According to Wikipedia, the term blue collar was first used in reference to trades jobs in 1924 when many workers wore blue uniforms. Technology is changing the way we all work, and driving skilled job openings in manufacturing. “Skilled Tradeworkers” is another description that is being posited as a replacement for what some are calling an archaic category name for a rapidly changing class of workers.