Working at call center definitely fetches more money, specially to simple gradutes, they( may be all) might not get this much money anywhere else. Also the job situation forces the well qualified people, engineers, MBAs etc to opt for this. It's not only medically that call centres are harmful for the people but also the culture at the work places is very dangerous specially for the girls. Recently a survey revealed, people easily get involved in sexual activities, initially it might look good but actually it can even shatter the family life.