Of course, Constitutionally speaking there is no difference between a doctor and a laborer. That should be self evident, why it isn't puzzles me.
Regarding the free exercise of religion, the important part is Congress shall make no law...
Thats correct as in forcing Catholic Hospitals to perform abortions, forcing Doctors to perform abortions or forcing pharmacists to abet abortion in the course of their work in violation of their religious beliefs.
You do NOT have a constitutional right to the free exercise of religion when, where, and how you see fit.
:-} In the old Soviet Union perhaps, in America I have the right to freely express my religious beliefs when, where and how I see fit as long as I don't violate any laws.
Again, not true. If you set up a biblical display in your office, or decided to try and convert co-workers the boss would be well within his rights to require you to stop or fire you if you refused.