Re: Restrictions on Facial Hair
you have already shot yourself.
you are an atheist so any religion that follows the belief of a deity is obviously not available to you, including the spaghetti monster.
you also state you subscribe to no religious beliefs.
therefore, you cannot claim a religious reasoning for anything. You are not religious and even if you were, a person claiming religious allowances generally has a difficult time claiming religious allowances unless they can prove they live their life in such a manner of following their religious tenets faithfully and continuously.
Example; I am a Christian (of a specific denomination) and working on Sundays is not supposed to happen. Now, I do not practice all the tenets of my religion so fervently that I can refuse to work on Sundays, if required by my employer, because I have not proven I follow the tenets of my religion...well...religiously.
You, by stating you have no religious beliefs, have removed all possibilities of a sustainable defense to allowing religiously supported actions.
and to this:
If something is meaningless to me, that means I couldn't care less. Since you could care less, how much less could you care before you couldn't care less? How important is not shaving your beard?
I could shave my beard today, and could care less.
as to others getting away with it;
that is often because those who have to argue this on the side of the employer do not want to spend the time and effort on fighting something that they can dismiss so easily as "their religion allows it". If all the employers wanted to argue against items such as you are concerned with, there are many the employers would win but it is simply a financial loss so they do not bother.
I am not an attorney and any advice is not to be construed as legal advice. You might even want to ignore my advice. Actually, there are plenty of real attorneys that you might want to ignore as well.