Absent an extremely compelling reason, the default position in any relationship should be that both parties are willing participants.
Not questioning the legality nor the ability of employees to work elsewhere. Just wondering what the FFAs opinion on the topic was. Folks seem to get pretty heated about the soda size ban in NY, here they won't let you have a job if you smoke. What if this spreads to all employers so that the employee no longer has the ability to realistically go elsewhere for work?
As for me, I work in healthcare and I know that for my hospital, our health insurance cost (low 8 figures) are driven substantially by two human "behaviors", smoking and obesity. While legal, smoking has a negative outcome for the rest of society in higher medical cost so I'm ok with the ban. And before the alcohol comparison is made, alcohol has no where near the rampant negative health impacts that smoking and obesity do.