While this is well-meaning, it's impractical. I would be unemployed in under 24 hours if I were to send such a letter to my employer.

Fyi, in 'dress code states' where companies can enforce dress code as a condition for employment without providing or justifying it, masks are being enforced as a dress code issue and employees are subject to termination for violating the dress code, not a health related mask mandate. It is important that people reading this understand that fact before they sacrifice their employment for nothing.