Freedom of Information Act?

Ok, so my question is this. Make a long story short, I am 6 months into a Human Rights case against my employer, but they are saying they must know what Medication I take (because of the type of meds they are), It take for ADHD, Anxiety, and Nocturnal Anxiety/Panic Attacks. They said as a condition of my employment, I must sign a consent of release of information, so they can speak to my Psychiatrist. I got it last Wed. Im not singing. I called the Human Rights Comission, to which they told me Not to sign anything. Labour Board, (who dealt with my labour board case against my employer last year) said I have to go into Freedom of Information and Priacy Act. Any suggestions what I can do when I tell them I'm not signing. No I don't have a lawyer., I can't afford 1, and legal aid wont accept me. I'm waiting for the next step in my Human Rights case, and my Psychiatrist told me to not say a word. I know they can'tfire me for not giving consent, but Im stuck, I live in Ont. Can.

Freedom of Information Act only applies to the government.