The wage for factory jobs are justified because there is a risk of loosing limbs and possibly your life. And id agree that if the middle class grew the economy will grow as well. But raising the min wage for fastfood workers will just inflate the economy. Example, my dad is a skilled machinist who took 3 years of schooling along with 30 years experience. His work is math and labor intensive, but he only makes about 17 dollar an hour. If a mcdonalds burger flipper made 2 dollars shy of what he makes, then why doesnt he just quit his job and work at a local mcdonalds? Hence inflation of the currency and devaluation of more important jobs.