One of the best things about living in India is watching families move from lower or lower-middle class to middle-class status. Usually, all it takes is someone from the family landing a white-collar job. While the tech bodyshops (TCS, Infosys, etc.) might have a poor reputation in the US, these companies have been absolutely critical in helping move tens of millions into middle-class respectability.
The same goes for most "slavery" jobs. A lot of people's fortunes has turned all over the world by working under "inhumane" condition for American or European companies.
These are actually good jobs in respect to state of play in these countries. The harm comes from degrading the employment standard in the rich countries where it's impossible to compete with places like China when they work under these conditions and as a result the jobs with "humane" conditions disappear in the wealthy countries or get worse.
Overall though, the world becomes a better places as the people in the developed countries get their stuff for cheap and people in the developing world catch up.