Excerpt: [C]ompanies want to know how far they can go to encourage workers to [stop smoking]. They're even gitting some help from the federal government--Sen. Tom Harkin, D-IA, recently proposed tax credits for businesses that employees eat better, exercise, manage stresss, and quit smoking. Introducted in July, the bill would give companies a tax credit of $200 each for the first 200 employees participating in the company wellness programs, and as much as $100 for each additional participant.  MORE >>