A while ago I read that any health care paid for by an employer would now be taxed as income to the employee.
It’s in the 2,400 page monstrosity that no one read.
Who really knows?
Here an answer to your question:
http://urbanlegends.about.com/od/government/a/Hr-3590-Income-Tax-On-Health-Insurance.htm
The answer appears to be, no, you do not pay taxes on employer provided health insurance. At least not yet!