How robots are filling worker shortages, replacing 'bad' jobs, and making work more rewarding

Across the globe, robots are showing up for work. They are crew members on cruises, teachers in classrooms, and even cow milkers on dairy farms. So how do companies integrate robots into their business? Which jobs are lost, and which new ones are created? And how do robots affect the bottom line? Here's a look at four employers that are using robots to improve their enterprise.