Can an Employer Discriminate Against Me Because of My Medical History?

I was diagnosed with cancer and the doctors have said that I have beat it. My employer won't allow me to come back to work. He says that they don't need someone that can have such an "unpredictable attendance record." Is this legal?

By Deskin Law Firm
It may be unlawful for a company to discriminate against you based on your medical condition especially with any health impairment related to or associated with a diagnosis of cancer, for which you have been rehabilitated or cured based on competant medical evidence.

Have you been discriminated against based on your medical condition?