If I could jump in here.... Absolutely keep a journal of what your boss says and does. You'll be very happy you had it if it comes to something legal.

Secondly, and I speak from personal experience, do not go to HR. They work for the company, despite how employee-centered and warm and fuzzy they may appear to be, and it is their job to keep the company safe from lawsuits, etc...

Try calling some pro bono law firms. Every state has a few that offer pro bono services. Ask for a meeting and lay out what's going on and what you could do to protect yourself. From what I understand, under the ADA, in order for you to be protected under the law, you do have to disclose a disability to your employer. And if they take adverse or retaliatory action after that, then baby, do you ever have a lawsuit!

It's the definition of disclosure I don't know about. Is it enough to say you have a medical disability, or do you have to name it? That's something a lawyer would know.

The fact that this boss of yours has already said "no one with depression" is a setup for disaster. That's just as bad as saying "no one who's a Democrat," for example. No discrimination based on religious, national origin, political affiliation, gender, age, or disability status. (I may have missed a few.)