The average US worker apparently takes about 20 days of holiday per year, out of an offered 25, and apparently it is more or less the same for Indians.
Fair point, but India has a legal maximum of 48 hours a week, though it does not appear to be enforced much and it seems quite hard to find any figures.
Everything I can find seems to indicate that the average US worker does not have a lot of leisure time in comparison to most countries, and also that average working hours does not seem to have a particularly strong correlation with the average wealth of the citizens.
Indians probably do work longer hours on average, but I don't think the gap is that large from what I can tell, though the statistics vary wildly. Forbes for instance has figures that seem to be much lower than other estimates and they claim an average of 25 hours a week for people from the US.
http://rwer.wordpress.com/2012/09/10/for-days-of-holiday-and...
http://www.rediff.com/money/slide-show/slide-show-1-indians-...
http://edition.cnn.com/SPECIALS/2007/work.life.balance/chart...