Initforme is living in the 1970's. What he doesn't realize is that today, automation is the greatest threat to blue collar workers, even more so than outsourcing or companies moving out of the country.
When labor becomes more expensive than automation investments, that's when employers make those investments. Yes, it is expensive, but the employer considers all the costs associated with workers that many ignore; costs like unemployment insurance coverage, workman's compensation coverage from what I understand is an arm and a leg, matching employees SS and Medicare contributions, medical coverage, paying people when they are not working like vacation time and holidays, even sick time which is kind of rare today.
Machines work 24/7. They don't take breaks, lunch, or go home early. Machines don't complain, don't demand raises, take holidays off or vacations, don't have to pay them overtime when things get busy.
Machines need maintenance and repairs, but that's all figured in by the employer when they make their decision.
The more labor pushes for more money, the more attractive automation investments become.