Companies that are looking for a good deal aren’t seeing one in new workers.Workers are getting more expensive while equipment is getting cheaper, and the combination is encouraging companies to spend on machines rather than people.

“I want to have as few people touching our products as possible,” said Dan Mishek, managing director of Vista Technologies in Vadnais Heights, Minn. “Everything should be as automated as it can be. We just can’t afford to compete with countries like China on labor costs, especially when workers are getting even more expensive.”...