I'm not exactly sure how they would have set this up given that their usual solution of Mechanical Turk does not pay their workers in cash anywhere outside of the US.
In some rural parts of the states Mechanical Turk is the largest employer but workers in other countries can only get paid in Amazon vouchers.
Somehow there are still a lot of Indian people working for Mechanical Turk though. It's not clear if they are exchanging the vouchers or are stuck in a hellish walled garden where their wages can only be spent with their employer.
a hellish walled garden where their wages can only be spent with their employer.
There are also a bunch of reports of businesses in India where people with loan debts being forced to work in hellish conditions and not allowed to leave by armed guards, basically indentured servitude/slave labor.