Many companies headquartered in California's Silicon Valley, including eBay, Microsoft, Netflix and Oracle, are expanding their campuses as they look to attract talent. Some experts say the campuses, which feature numerous amenities, are a way for technology firms to overwork employees. "When you look at how some of these companies operate, they're in effect, sweat shops. ... They want 80, 90, 100 hours of work. In order to even make that tolerable, of course you have to offer haircuts and food and places to sleep," HR consultant Kevin Wheeler says.