Employees Don't Have a Choice...
The bottom line orion, is that almost all of these people don't have a choice.
Some reasons:
1. This is a great job relative to what else they can get in their country. Some governments have policies that undesirable people should "disappear". That means that they are put in a place where no-one notices them until they starve to death. If you resist this treatment, you are killed.
2. Countries like North Korea jail a dissadent's family. The parents and grandparents are killed, and the children are forced to work in slave labor camps for no wages and little food. ABC News documented cases where goods were actually manufactured in camps like these by children in North Korea. The goods were exported to China, and labelled as "made in China", and then exported to the United States. So, the toys you buy lovingly for your kids, may actually be made by some kid that will starve to death in the next week.
3. India is growing a middle-class by educating a lot of people in computers and technology. India "got it" about 10 years ago, and started pouring funding into their University system to educate a large population of techies. Now India is getting the payoff of lots of new jobs, just as America's baby boomers come into their prime earning years. But, in India, you don't have the flexibility that you do here in the states to just quit a job and change. The government regulates a lot of stuff, probably even who you work for. Many of these kids may even owe college debts to the companies they work for.
