Last month, hundreds of workers went on the rampage at a factory belonging to garment exporter Orient Craft, torching vehicles and smashing windows in the gritty industrial fringes of Gurgaon, a Delhi satellite city. Increasingly common in Indian workplaces, these violent outbursts could become a thing of the past under a bold round of labor reforms planned by Prime Minister Narendra Modi. Many businesses cheer the plans, which they say will help make India a manufacturing hub.