Pradipta Bagchi knows the depths of jet lag. He once got on a plane in India to travel to the US for a business conference held by Rupert Murdoch; 18 hours later, he was back in the air going home.

Shaking his head ruefully, he mutters, "No way around it."

Such trips come with the territory for the GM of corporate communications for Tata Consultancy Services (TCS), the massive consulting arm of the even more massive Tata Group, India's most famous ...