What is "affordable"?

The employer mandate under health care reform kicks off in 2014 and the key term “affordability” is based only on single coverage.  This will likely be a target ripe for revision as it seems counterintuitive in relation to the goals of the law.  Indeed, that provision is already raising eyebrows as this article from Business Insurance shows.

http://www.businessinsurance.com/article/20130210/NEWS03/302109981?tags=|307