If you get to work and find racial slurs written on the glass door to your office, it's fairly obvious that you are being harassed and discriminated against on the job. It's things like this -- and worse -- that are why we have such extensive anti-discrimination laws today.
For many employers, it's tempting to classify workers as independent contractors to avoid employment taxes, providing benefits or paying overtime.
Your struggles with mental health issues are hard enough to deal with on your own. It takes everything you have to stay on top of it and live a fulfilling life. The last thing you need is to face discrimination in the workplace based on your condition.