Letting you work from home in this situation might be considered a "reasonable accommodation" under the ADA (Americans with Disabilities Act). The ADA applies to employers with 15 or more employees.

Here's some information about the ADA: https://en.wikipedia.org/wiki/Americans_with_Disabilities_Ac...

There may also be applicable laws in your state. Just because an employee is at-will doesn't mean that they have no legal protections.

You may want to contact a lawyer specializing in employment law for more information on what your legal rights are in this situation.

I hope everything goes well for you.