He's a Libertarian that hates that workers might have leverage.
Admittedly, I don't think employees have some sort of right to have a say in the running of the business. That doesn't mean they don't have leverage. Employees have leverage when they are not easily replaceable. But the more unemployed people there are in the same industry, the more replaceable employees are.
My perspective is probably also heavily influenced by the fact that I come from an industry where the plum big-firm jobs that pay a lot are heavily competitive, and there's a line of law-school grads who at any given moment would probably shiv each other in the kidneys if it meant landing a job at places like Cravath or Skadden or Akin Gump or Kirkland & Ellis.