How big is the company that you work for? Large group corporate insurance (or even self insured companies) cannot deny you coverage for mental health if they offer mental health coverage to the rest of the group. Usually you have to sign up for coverage when you are first employed. Even if you sign up for coverage late, usually you have to wait a period of time to be covered for a preexisting condition; not be rejected completely. Small businesses probably cant afford to do so and that is why they aren't included in mental health parity along with individual plans. Most large groups dont let you reject coverage, its mandatory to be a member of the group or they are violating the terms of their contracts with the insurance companies.

If you have that many illnesses you may try to get on Social Security disability to eventually qualify for Medicare or Medicaid.

Im so sorry this is happening to you.