Anecdotally, the Indian people I've worked with have been incredible. One of them (my manager) annoyed me to death and I eventually quit because of him, but I never doubted his work ethic. If anything it was my American coworkers who would frequently take off early, goof off at work, etc.

There was a bit of a communication barrier with some of the Indian colleagues, depending on their skill level, but as a rule they worked hard and were approachable.