A suggestion by a European economist that airlines charge passengers by how much they weigh is just the latest example of businesses trying to protect their bottom line.
Airlines argue it costs more to fly bigger people. But drugstore giant CVS passes along higher insurance costs to employees who don't maintain certain health-criteria. And some hospitals, in the medical center, have enacted no-smoking hiring policies, to reduce their costs.
"I don't think that it's the nanny state," says University of Houston Law Professor Darren Bush, "I think what businesses do is , they think, 'Are there classes of customers which cost me more than other classes of customers? And if so, is it the case that I can get away with charging them more?."
Professor Bush is a frequent critic of airline business practices and says, while carriers already charge a whole host of fees, it's unlikely to irritate flyers by charging by weight.